./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-divine/ring_1w1r-1.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_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-divine/ring_1w1r-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN --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 3a956b76a4ba98ce13df4d83ef2fb7ffa0973225ecb152c14bcfbb55b6546601 --- 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 11:32:01,474 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:32:01,477 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:32:01,519 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:32:01,520 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:32:01,524 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:32:01,526 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:32:01,529 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:32:01,532 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:32:01,537 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:32:01,538 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:32:01,539 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:32:01,540 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:32:01,541 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:32:01,542 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:32:01,543 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:32:01,544 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:32:01,544 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:32:01,546 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:32:01,556 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:32:01,558 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:32:01,561 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:32:01,563 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:32:01,564 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:32:01,575 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:32:01,575 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:32:01,576 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:32:01,578 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:32:01,578 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:32:01,580 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:32:01,580 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:32:01,581 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:32:01,583 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:32:01,584 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:32:01,585 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:32:01,585 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:32:01,586 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:32:01,586 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:32:01,587 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:32:01,588 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:32:01,588 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:32:01,589 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-20 11:32:01,631 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:32:01,631 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:32:01,632 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:32:01,632 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:32:01,633 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:32:01,633 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:32:01,634 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:32:01,634 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:32:01,634 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:32:01,635 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:32:01,636 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:32:01,636 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:32:01,636 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:32:01,637 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:32:01,637 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:32:01,637 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:32:01,637 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:32:01,637 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:32:01,638 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-20 11:32:01,638 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:32:01,638 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:32:01,638 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:32:01,638 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:32:01,639 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:32:01,639 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:32:01,639 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:32:01,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:32:01,639 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:32:01,640 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:32:01,641 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:32:01,641 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:32:01,641 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:32:01,641 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:32:01,641 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:32:01,642 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:32:01,642 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_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a956b76a4ba98ce13df4d83ef2fb7ffa0973225ecb152c14bcfbb55b6546601 [2022-11-20 11:32:01,907 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:32:01,945 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:32:01,947 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:32:01,949 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:32:01,950 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:32:01,951 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/pthread-divine/ring_1w1r-1.i [2022-11-20 11:32:05,032 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:32:05,337 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:32:05,351 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i [2022-11-20 11:32:05,365 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/data/57e38c201/3ef43aa82f7b45f883b6b6a001d1284a/FLAG8e78f06c4 [2022-11-20 11:32:05,387 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/data/57e38c201/3ef43aa82f7b45f883b6b6a001d1284a [2022-11-20 11:32:05,390 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:32:05,392 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:32:05,394 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:32:05,394 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:32:05,398 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:32:05,399 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:32:05" (1/1) ... [2022-11-20 11:32:05,400 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2795a149 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:05, skipping insertion in model container [2022-11-20 11:32:05,401 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:32:05" (1/1) ... [2022-11-20 11:32:05,411 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:32:05,473 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:32:05,623 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-20 11:32:06,018 WARN L237 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_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39095,39108] [2022-11-20 11:32:06,023 WARN L237 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_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39180,39193] [2022-11-20 11:32:06,024 WARN L237 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_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39232,39245] [2022-11-20 11:32:06,036 WARN L237 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_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39641,39654] [2022-11-20 11:32:06,039 WARN L237 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_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39726,39739] [2022-11-20 11:32:06,040 WARN L237 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_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39778,39791] [2022-11-20 11:32:06,049 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:32:06,062 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:32:06,083 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-20 11:32:06,149 WARN L237 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_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39095,39108] [2022-11-20 11:32:06,154 WARN L237 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_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39180,39193] [2022-11-20 11:32:06,155 WARN L237 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_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39232,39245] [2022-11-20 11:32:06,160 WARN L237 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_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39641,39654] [2022-11-20 11:32:06,161 WARN L237 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_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39726,39739] [2022-11-20 11:32:06,164 WARN L237 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_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39778,39791] [2022-11-20 11:32:06,173 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:32:06,233 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:32:06,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:06 WrapperNode [2022-11-20 11:32:06,234 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:32:06,236 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:32:06,236 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:32:06,236 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:32:06,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:06" (1/1) ... [2022-11-20 11:32:06,280 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:06" (1/1) ... [2022-11-20 11:32:06,337 INFO L138 Inliner]: procedures = 225, calls = 43, calls flagged for inlining = 10, calls inlined = 7, statements flattened = 198 [2022-11-20 11:32:06,339 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:32:06,340 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:32:06,341 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:32:06,341 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:32:06,353 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:06" (1/1) ... [2022-11-20 11:32:06,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:06" (1/1) ... [2022-11-20 11:32:06,370 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:06" (1/1) ... [2022-11-20 11:32:06,372 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:06" (1/1) ... [2022-11-20 11:32:06,393 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:06" (1/1) ... [2022-11-20 11:32:06,418 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:06" (1/1) ... [2022-11-20 11:32:06,420 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:06" (1/1) ... [2022-11-20 11:32:06,422 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:06" (1/1) ... [2022-11-20 11:32:06,426 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:32:06,427 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:32:06,427 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:32:06,427 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:32:06,428 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:06" (1/1) ... [2022-11-20 11:32:06,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:32:06,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:32:06,462 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:32:06,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:32:06,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:32:06,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:32:06,507 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:32:06,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:32:06,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:32:06,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:32:06,507 INFO L130 BoogieDeclarations]: Found specification of procedure reader_nowait_fn [2022-11-20 11:32:06,508 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_nowait_fn [2022-11-20 11:32:06,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:32:06,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:32:06,510 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 11:32:06,762 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:32:06,764 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:32:07,368 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:32:07,378 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:32:07,378 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-20 11:32:07,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:32:07 BoogieIcfgContainer [2022-11-20 11:32:07,381 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:32:07,383 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:32:07,383 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:32:07,387 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:32:07,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:32:05" (1/3) ... [2022-11-20 11:32:07,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68b936bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:32:07, skipping insertion in model container [2022-11-20 11:32:07,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:06" (2/3) ... [2022-11-20 11:32:07,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68b936bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:32:07, skipping insertion in model container [2022-11-20 11:32:07,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:32:07" (3/3) ... [2022-11-20 11:32:07,390 INFO L112 eAbstractionObserver]: Analyzing ICFG ring_1w1r-1.i [2022-11-20 11:32:07,399 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 11:32:07,408 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:32:07,409 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2022-11-20 11:32:07,409 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:32:07,521 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-20 11:32:07,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 233 places, 238 transitions, 484 flow [2022-11-20 11:32:07,657 INFO L130 PetriNetUnfolder]: 9/237 cut-off events. [2022-11-20 11:32:07,658 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-20 11:32:07,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242 conditions, 237 events. 9/237 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 515 event pairs, 0 based on Foata normal form. 0/213 useless extension candidates. Maximal degree in co-relation 180. Up to 2 conditions per place. [2022-11-20 11:32:07,670 INFO L82 GeneralOperation]: Start removeDead. Operand has 233 places, 238 transitions, 484 flow [2022-11-20 11:32:07,677 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 223 places, 228 transitions, 459 flow [2022-11-20 11:32:07,687 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:32:07,697 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;@146be039, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:32:07,698 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-11-20 11:32:07,714 INFO L130 PetriNetUnfolder]: 0/31 cut-off events. [2022-11-20 11:32:07,714 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:32:07,715 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:32:07,715 INFO L209 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] [2022-11-20 11:32:07,716 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-20 11:32:07,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:32:07,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1177147086, now seen corresponding path program 1 times [2022-11-20 11:32:07,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:32:07,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348515601] [2022-11-20 11:32:07,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:32:07,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:32:07,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:32:08,688 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 11:32:08,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:32:08,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348515601] [2022-11-20 11:32:08,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348515601] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:32:08,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:32:08,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:32:08,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757845838] [2022-11-20 11:32:08,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:32:08,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:32:08,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:32:08,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:32:08,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:32:08,781 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 238 [2022-11-20 11:32:08,789 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 228 transitions, 459 flow. Second operand has 6 states, 6 states have (on average 135.5) internal successors, (813), 6 states have internal predecessors, (813), 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 11:32:08,790 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:32:08,790 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 238 [2022-11-20 11:32:08,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:32:10,268 INFO L130 PetriNetUnfolder]: 1707/5516 cut-off events. [2022-11-20 11:32:10,268 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-20 11:32:10,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8808 conditions, 5516 events. 1707/5516 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 44896 event pairs, 1512 based on Foata normal form. 375/5154 useless extension candidates. Maximal degree in co-relation 8738. Up to 3276 conditions per place. [2022-11-20 11:32:10,303 INFO L137 encePairwiseOnDemand]: 226/238 looper letters, 91 selfloop transitions, 5 changer transitions 0/221 dead transitions. [2022-11-20 11:32:10,304 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 221 transitions, 637 flow [2022-11-20 11:32:10,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:32:10,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 11:32:10,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 907 transitions. [2022-11-20 11:32:10,323 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6351540616246498 [2022-11-20 11:32:10,324 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 907 transitions. [2022-11-20 11:32:10,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 907 transitions. [2022-11-20 11:32:10,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:32:10,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 907 transitions. [2022-11-20 11:32:10,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 151.16666666666666) internal successors, (907), 6 states have internal predecessors, (907), 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 11:32:10,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 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 11:32:10,347 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 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 11:32:10,350 INFO L175 Difference]: Start difference. First operand has 223 places, 228 transitions, 459 flow. Second operand 6 states and 907 transitions. [2022-11-20 11:32:10,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 221 transitions, 637 flow [2022-11-20 11:32:10,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 221 transitions, 636 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:32:10,361 INFO L231 Difference]: Finished difference. Result has 226 places, 221 transitions, 454 flow [2022-11-20 11:32:10,364 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=454, PETRI_PLACES=226, PETRI_TRANSITIONS=221} [2022-11-20 11:32:10,368 INFO L288 CegarLoopForPetriNet]: 223 programPoint places, 3 predicate places. [2022-11-20 11:32:10,369 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 221 transitions, 454 flow [2022-11-20 11:32:10,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 135.5) internal successors, (813), 6 states have internal predecessors, (813), 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 11:32:10,370 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:32:10,370 INFO L209 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] [2022-11-20 11:32:10,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:32:10,371 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-20 11:32:10,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:32:10,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1648035877, now seen corresponding path program 1 times [2022-11-20 11:32:10,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:32:10,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234483902] [2022-11-20 11:32:10,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:32:10,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:32:10,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:32:10,759 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 11:32:10,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:32:10,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234483902] [2022-11-20 11:32:10,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234483902] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:32:10,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:32:10,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:32:10,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335874278] [2022-11-20 11:32:10,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:32:10,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:32:10,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:32:10,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:32:10,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:32:10,766 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 238 [2022-11-20 11:32:10,767 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 221 transitions, 454 flow. Second operand has 6 states, 6 states have (on average 136.5) internal successors, (819), 6 states have internal predecessors, (819), 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 11:32:10,767 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:32:10,768 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 238 [2022-11-20 11:32:10,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:32:12,061 INFO L130 PetriNetUnfolder]: 1707/5515 cut-off events. [2022-11-20 11:32:12,062 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-20 11:32:12,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8811 conditions, 5515 events. 1707/5515 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 45068 event pairs, 1512 based on Foata normal form. 0/4779 useless extension candidates. Maximal degree in co-relation 8748. Up to 3282 conditions per place. [2022-11-20 11:32:12,091 INFO L137 encePairwiseOnDemand]: 232/238 looper letters, 90 selfloop transitions, 5 changer transitions 0/220 dead transitions. [2022-11-20 11:32:12,091 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 220 transitions, 642 flow [2022-11-20 11:32:12,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:32:12,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 11:32:12,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 900 transitions. [2022-11-20 11:32:12,098 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6302521008403361 [2022-11-20 11:32:12,098 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 900 transitions. [2022-11-20 11:32:12,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 900 transitions. [2022-11-20 11:32:12,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:32:12,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 900 transitions. [2022-11-20 11:32:12,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 150.0) internal successors, (900), 6 states have internal predecessors, (900), 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 11:32:12,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 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 11:32:12,106 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 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 11:32:12,107 INFO L175 Difference]: Start difference. First operand has 226 places, 221 transitions, 454 flow. Second operand 6 states and 900 transitions. [2022-11-20 11:32:12,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 220 transitions, 642 flow [2022-11-20 11:32:12,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 220 transitions, 632 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 11:32:12,118 INFO L231 Difference]: Finished difference. Result has 225 places, 220 transitions, 452 flow [2022-11-20 11:32:12,119 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=452, PETRI_PLACES=225, PETRI_TRANSITIONS=220} [2022-11-20 11:32:12,120 INFO L288 CegarLoopForPetriNet]: 223 programPoint places, 2 predicate places. [2022-11-20 11:32:12,120 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 220 transitions, 452 flow [2022-11-20 11:32:12,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 136.5) internal successors, (819), 6 states have internal predecessors, (819), 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 11:32:12,121 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:32:12,122 INFO L209 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] [2022-11-20 11:32:12,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:32:12,123 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-20 11:32:12,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:32:12,125 INFO L85 PathProgramCache]: Analyzing trace with hash -765257624, now seen corresponding path program 1 times [2022-11-20 11:32:12,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:32:12,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981063755] [2022-11-20 11:32:12,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:32:12,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:32:12,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:32:12,632 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 11:32:12,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:32:12,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981063755] [2022-11-20 11:32:12,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981063755] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:32:12,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:32:12,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:32:12,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851345625] [2022-11-20 11:32:12,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:32:12,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:32:12,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:32:12,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:32:12,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:32:12,639 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 238 [2022-11-20 11:32:12,641 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 220 transitions, 452 flow. Second operand has 6 states, 6 states have (on average 137.16666666666666) internal successors, (823), 6 states have internal predecessors, (823), 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 11:32:12,641 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:32:12,641 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 238 [2022-11-20 11:32:12,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:32:14,774 INFO L130 PetriNetUnfolder]: 2913/8124 cut-off events. [2022-11-20 11:32:14,774 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-20 11:32:14,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13789 conditions, 8124 events. 2913/8124 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 65087 event pairs, 912 based on Foata normal form. 0/7111 useless extension candidates. Maximal degree in co-relation 13730. Up to 3784 conditions per place. [2022-11-20 11:32:14,819 INFO L137 encePairwiseOnDemand]: 217/238 looper letters, 242 selfloop transitions, 43 changer transitions 0/410 dead transitions. [2022-11-20 11:32:14,820 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 410 transitions, 1402 flow [2022-11-20 11:32:14,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:32:14,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 11:32:14,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1091 transitions. [2022-11-20 11:32:14,830 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7640056022408963 [2022-11-20 11:32:14,830 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1091 transitions. [2022-11-20 11:32:14,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1091 transitions. [2022-11-20 11:32:14,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:32:14,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1091 transitions. [2022-11-20 11:32:14,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 181.83333333333334) internal successors, (1091), 6 states have internal predecessors, (1091), 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 11:32:14,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 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 11:32:14,839 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 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 11:32:14,839 INFO L175 Difference]: Start difference. First operand has 225 places, 220 transitions, 452 flow. Second operand 6 states and 1091 transitions. [2022-11-20 11:32:14,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 410 transitions, 1402 flow [2022-11-20 11:32:14,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 410 transitions, 1392 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 11:32:14,847 INFO L231 Difference]: Finished difference. Result has 230 places, 262 transitions, 738 flow [2022-11-20 11:32:14,848 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=738, PETRI_PLACES=230, PETRI_TRANSITIONS=262} [2022-11-20 11:32:14,848 INFO L288 CegarLoopForPetriNet]: 223 programPoint places, 7 predicate places. [2022-11-20 11:32:14,849 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 262 transitions, 738 flow [2022-11-20 11:32:14,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 137.16666666666666) internal successors, (823), 6 states have internal predecessors, (823), 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 11:32:14,850 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:32:14,850 INFO L209 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] [2022-11-20 11:32:14,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:32:14,850 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-20 11:32:14,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:32:14,851 INFO L85 PathProgramCache]: Analyzing trace with hash -942807167, now seen corresponding path program 1 times [2022-11-20 11:32:14,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:32:14,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809256815] [2022-11-20 11:32:14,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:32:14,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:32:14,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:32:14,923 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 11:32:14,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:32:14,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809256815] [2022-11-20 11:32:14,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809256815] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:32:14,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:32:14,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:32:14,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226716907] [2022-11-20 11:32:14,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:32:14,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:32:14,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:32:14,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:32:14,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:32:14,927 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 238 [2022-11-20 11:32:14,929 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 262 transitions, 738 flow. Second operand has 3 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 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 11:32:14,929 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:32:14,929 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 238 [2022-11-20 11:32:14,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:32:15,435 INFO L130 PetriNetUnfolder]: 295/2450 cut-off events. [2022-11-20 11:32:15,435 INFO L131 PetriNetUnfolder]: For 236/268 co-relation queries the response was YES. [2022-11-20 11:32:15,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3548 conditions, 2450 events. 295/2450 cut-off events. For 236/268 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 17645 event pairs, 16 based on Foata normal form. 0/2231 useless extension candidates. Maximal degree in co-relation 3492. Up to 340 conditions per place. [2022-11-20 11:32:15,465 INFO L137 encePairwiseOnDemand]: 235/238 looper letters, 7 selfloop transitions, 2 changer transitions 0/265 dead transitions. [2022-11-20 11:32:15,469 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 265 transitions, 762 flow [2022-11-20 11:32:15,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:32:15,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:32:15,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 685 transitions. [2022-11-20 11:32:15,473 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9593837535014006 [2022-11-20 11:32:15,473 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 685 transitions. [2022-11-20 11:32:15,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 685 transitions. [2022-11-20 11:32:15,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:32:15,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 685 transitions. [2022-11-20 11:32:15,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 228.33333333333334) internal successors, (685), 3 states have internal predecessors, (685), 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 11:32:15,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 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 11:32:15,492 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 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 11:32:15,492 INFO L175 Difference]: Start difference. First operand has 230 places, 262 transitions, 738 flow. Second operand 3 states and 685 transitions. [2022-11-20 11:32:15,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 265 transitions, 762 flow [2022-11-20 11:32:15,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 265 transitions, 762 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:32:15,510 INFO L231 Difference]: Finished difference. Result has 233 places, 263 transitions, 750 flow [2022-11-20 11:32:15,510 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=738, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=750, PETRI_PLACES=233, PETRI_TRANSITIONS=263} [2022-11-20 11:32:15,513 INFO L288 CegarLoopForPetriNet]: 223 programPoint places, 10 predicate places. [2022-11-20 11:32:15,513 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 263 transitions, 750 flow [2022-11-20 11:32:15,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 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 11:32:15,514 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:32:15,515 INFO L209 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] [2022-11-20 11:32:15,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:32:15,516 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-20 11:32:15,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:32:15,518 INFO L85 PathProgramCache]: Analyzing trace with hash -916765828, now seen corresponding path program 1 times [2022-11-20 11:32:15,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:32:15,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122953511] [2022-11-20 11:32:15,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:32:15,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:32:15,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:32:15,629 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 11:32:15,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:32:15,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122953511] [2022-11-20 11:32:15,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122953511] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:32:15,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:32:15,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:32:15,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74859320] [2022-11-20 11:32:15,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:32:15,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:32:15,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:32:15,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:32:15,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:32:15,636 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 238 [2022-11-20 11:32:15,638 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 263 transitions, 750 flow. Second operand has 3 states, 3 states have (on average 224.33333333333334) internal successors, (673), 3 states have internal predecessors, (673), 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 11:32:15,638 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:32:15,638 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 238 [2022-11-20 11:32:15,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:32:16,574 INFO L130 PetriNetUnfolder]: 543/3840 cut-off events. [2022-11-20 11:32:16,574 INFO L131 PetriNetUnfolder]: For 462/523 co-relation queries the response was YES. [2022-11-20 11:32:16,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6064 conditions, 3840 events. 543/3840 cut-off events. For 462/523 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 30710 event pairs, 46 based on Foata normal form. 0/3523 useless extension candidates. Maximal degree in co-relation 6006. Up to 649 conditions per place. [2022-11-20 11:32:16,613 INFO L137 encePairwiseOnDemand]: 235/238 looper letters, 10 selfloop transitions, 2 changer transitions 0/267 dead transitions. [2022-11-20 11:32:16,613 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 267 transitions, 782 flow [2022-11-20 11:32:16,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:32:16,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:32:16,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 682 transitions. [2022-11-20 11:32:16,617 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9551820728291317 [2022-11-20 11:32:16,617 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 682 transitions. [2022-11-20 11:32:16,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 682 transitions. [2022-11-20 11:32:16,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:32:16,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 682 transitions. [2022-11-20 11:32:16,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 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 11:32:16,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 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 11:32:16,625 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 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 11:32:16,625 INFO L175 Difference]: Start difference. First operand has 233 places, 263 transitions, 750 flow. Second operand 3 states and 682 transitions. [2022-11-20 11:32:16,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 267 transitions, 782 flow [2022-11-20 11:32:16,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 267 transitions, 780 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:32:16,640 INFO L231 Difference]: Finished difference. Result has 235 places, 264 transitions, 760 flow [2022-11-20 11:32:16,641 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=760, PETRI_PLACES=235, PETRI_TRANSITIONS=264} [2022-11-20 11:32:16,646 INFO L288 CegarLoopForPetriNet]: 223 programPoint places, 12 predicate places. [2022-11-20 11:32:16,646 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 264 transitions, 760 flow [2022-11-20 11:32:16,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 224.33333333333334) internal successors, (673), 3 states have internal predecessors, (673), 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 11:32:16,647 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:32:16,647 INFO L209 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] [2022-11-20 11:32:16,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:32:16,648 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-20 11:32:16,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:32:16,650 INFO L85 PathProgramCache]: Analyzing trace with hash 159417040, now seen corresponding path program 1 times [2022-11-20 11:32:16,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:32:16,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378118409] [2022-11-20 11:32:16,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:32:16,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:32:16,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:32:17,146 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 11:32:17,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:32:17,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378118409] [2022-11-20 11:32:17,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378118409] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:32:17,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:32:17,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:32:17,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377814388] [2022-11-20 11:32:17,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:32:17,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:32:17,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:32:17,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:32:17,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:32:17,152 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 238 [2022-11-20 11:32:17,154 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 264 transitions, 760 flow. Second operand has 6 states, 6 states have (on average 135.16666666666666) internal successors, (811), 6 states have internal predecessors, (811), 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 11:32:17,155 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:32:17,155 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 238 [2022-11-20 11:32:17,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:32:23,379 INFO L130 PetriNetUnfolder]: 11063/29239 cut-off events. [2022-11-20 11:32:23,379 INFO L131 PetriNetUnfolder]: For 8988/9177 co-relation queries the response was YES. [2022-11-20 11:32:23,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61035 conditions, 29239 events. 11063/29239 cut-off events. For 8988/9177 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 273042 event pairs, 2766 based on Foata normal form. 0/26645 useless extension candidates. Maximal degree in co-relation 60966. Up to 12020 conditions per place. [2022-11-20 11:32:23,715 INFO L137 encePairwiseOnDemand]: 214/238 looper letters, 319 selfloop transitions, 45 changer transitions 0/489 dead transitions. [2022-11-20 11:32:23,715 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 489 transitions, 2246 flow [2022-11-20 11:32:23,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:32:23,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 11:32:23,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1069 transitions. [2022-11-20 11:32:23,720 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7485994397759104 [2022-11-20 11:32:23,720 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1069 transitions. [2022-11-20 11:32:23,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1069 transitions. [2022-11-20 11:32:23,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:32:23,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1069 transitions. [2022-11-20 11:32:23,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 178.16666666666666) internal successors, (1069), 6 states have internal predecessors, (1069), 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 11:32:23,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 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 11:32:23,729 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 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 11:32:23,729 INFO L175 Difference]: Start difference. First operand has 235 places, 264 transitions, 760 flow. Second operand 6 states and 1069 transitions. [2022-11-20 11:32:23,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 489 transitions, 2246 flow [2022-11-20 11:32:23,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 489 transitions, 2244 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:32:23,776 INFO L231 Difference]: Finished difference. Result has 244 places, 308 transitions, 1150 flow [2022-11-20 11:32:23,777 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=758, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1150, PETRI_PLACES=244, PETRI_TRANSITIONS=308} [2022-11-20 11:32:23,780 INFO L288 CegarLoopForPetriNet]: 223 programPoint places, 21 predicate places. [2022-11-20 11:32:23,780 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 308 transitions, 1150 flow [2022-11-20 11:32:23,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 135.16666666666666) internal successors, (811), 6 states have internal predecessors, (811), 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 11:32:23,781 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:32:23,782 INFO L209 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] [2022-11-20 11:32:23,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:32:23,786 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-20 11:32:23,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:32:23,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1457571279, now seen corresponding path program 1 times [2022-11-20 11:32:23,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:32:23,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210925902] [2022-11-20 11:32:23,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:32:23,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:32:23,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:32:24,236 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 11:32:24,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:32:24,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210925902] [2022-11-20 11:32:24,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210925902] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:32:24,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:32:24,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:32:24,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004389696] [2022-11-20 11:32:24,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:32:24,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:32:24,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:32:24,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:32:24,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:32:24,244 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 238 [2022-11-20 11:32:24,245 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 308 transitions, 1150 flow. Second operand has 6 states, 6 states have (on average 137.16666666666666) internal successors, (823), 6 states have internal predecessors, (823), 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 11:32:24,245 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:32:24,246 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 238 [2022-11-20 11:32:24,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:32:31,540 INFO L130 PetriNetUnfolder]: 11656/31740 cut-off events. [2022-11-20 11:32:31,541 INFO L131 PetriNetUnfolder]: For 18645/18763 co-relation queries the response was YES. [2022-11-20 11:32:31,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75207 conditions, 31740 events. 11656/31740 cut-off events. For 18645/18763 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 301886 event pairs, 6320 based on Foata normal form. 8/29525 useless extension candidates. Maximal degree in co-relation 75134. Up to 19882 conditions per place. [2022-11-20 11:32:31,794 INFO L137 encePairwiseOnDemand]: 223/238 looper letters, 373 selfloop transitions, 78 changer transitions 0/577 dead transitions. [2022-11-20 11:32:31,794 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 577 transitions, 3270 flow [2022-11-20 11:32:31,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:32:31,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 11:32:31,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1068 transitions. [2022-11-20 11:32:31,800 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7478991596638656 [2022-11-20 11:32:31,800 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1068 transitions. [2022-11-20 11:32:31,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1068 transitions. [2022-11-20 11:32:31,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:32:31,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1068 transitions. [2022-11-20 11:32:31,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 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 11:32:31,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 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 11:32:31,811 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 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 11:32:31,811 INFO L175 Difference]: Start difference. First operand has 244 places, 308 transitions, 1150 flow. Second operand 6 states and 1068 transitions. [2022-11-20 11:32:31,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 577 transitions, 3270 flow [2022-11-20 11:32:31,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 577 transitions, 3270 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:32:31,892 INFO L231 Difference]: Finished difference. Result has 254 places, 385 transitions, 1968 flow [2022-11-20 11:32:31,893 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=1150, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1968, PETRI_PLACES=254, PETRI_TRANSITIONS=385} [2022-11-20 11:32:31,894 INFO L288 CegarLoopForPetriNet]: 223 programPoint places, 31 predicate places. [2022-11-20 11:32:31,894 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 385 transitions, 1968 flow [2022-11-20 11:32:31,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 137.16666666666666) internal successors, (823), 6 states have internal predecessors, (823), 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 11:32:31,895 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:32:31,895 INFO L209 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, 1, 1, 1] [2022-11-20 11:32:31,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:32:31,896 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-20 11:32:31,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:32:31,897 INFO L85 PathProgramCache]: Analyzing trace with hash 725118963, now seen corresponding path program 1 times [2022-11-20 11:32:31,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:32:31,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785744334] [2022-11-20 11:32:31,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:32:31,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:32:31,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:32:32,366 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 11:32:32,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:32:32,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785744334] [2022-11-20 11:32:32,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785744334] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:32:32,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:32:32,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:32:32,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399099358] [2022-11-20 11:32:32,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:32:32,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:32:32,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:32:32,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:32:32,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:32:32,371 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 238 [2022-11-20 11:32:32,372 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 385 transitions, 1968 flow. Second operand has 6 states, 6 states have (on average 136.16666666666666) internal successors, (817), 6 states have internal predecessors, (817), 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 11:32:32,373 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:32:32,373 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 238 [2022-11-20 11:32:32,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:32:40,539 INFO L130 PetriNetUnfolder]: 13545/35766 cut-off events. [2022-11-20 11:32:40,539 INFO L131 PetriNetUnfolder]: For 29241/29432 co-relation queries the response was YES. [2022-11-20 11:32:40,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93225 conditions, 35766 events. 13545/35766 cut-off events. For 29241/29432 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 344764 event pairs, 4776 based on Foata normal form. 0/33529 useless extension candidates. Maximal degree in co-relation 93147. Up to 18056 conditions per place. [2022-11-20 11:32:40,803 INFO L137 encePairwiseOnDemand]: 227/238 looper letters, 458 selfloop transitions, 66 changer transitions 0/650 dead transitions. [2022-11-20 11:32:40,803 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 650 transitions, 4264 flow [2022-11-20 11:32:40,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:32:40,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 11:32:40,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1057 transitions. [2022-11-20 11:32:40,808 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7401960784313726 [2022-11-20 11:32:40,808 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1057 transitions. [2022-11-20 11:32:40,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1057 transitions. [2022-11-20 11:32:40,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:32:40,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1057 transitions. [2022-11-20 11:32:40,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 176.16666666666666) internal successors, (1057), 6 states have internal predecessors, (1057), 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 11:32:40,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 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 11:32:40,817 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 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 11:32:40,817 INFO L175 Difference]: Start difference. First operand has 254 places, 385 transitions, 1968 flow. Second operand 6 states and 1057 transitions. [2022-11-20 11:32:40,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 650 transitions, 4264 flow [2022-11-20 11:32:40,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 650 transitions, 4264 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:32:40,956 INFO L231 Difference]: Finished difference. Result has 264 places, 447 transitions, 2730 flow [2022-11-20 11:32:40,957 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=1968, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2730, PETRI_PLACES=264, PETRI_TRANSITIONS=447} [2022-11-20 11:32:40,960 INFO L288 CegarLoopForPetriNet]: 223 programPoint places, 41 predicate places. [2022-11-20 11:32:40,961 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 447 transitions, 2730 flow [2022-11-20 11:32:40,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 136.16666666666666) internal successors, (817), 6 states have internal predecessors, (817), 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 11:32:40,961 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:32:40,962 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:32:40,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:32:40,962 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting reader_nowait_fnErr3ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-20 11:32:40,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:32:40,963 INFO L85 PathProgramCache]: Analyzing trace with hash -972379362, now seen corresponding path program 1 times [2022-11-20 11:32:40,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:32:40,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905471793] [2022-11-20 11:32:40,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:32:40,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:32:41,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:32:41,442 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 11:32:41,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:32:41,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905471793] [2022-11-20 11:32:41,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905471793] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:32:41,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:32:41,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:32:41,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174833547] [2022-11-20 11:32:41,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:32:41,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:32:41,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:32:41,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:32:41,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:32:41,446 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 238 [2022-11-20 11:32:41,447 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 447 transitions, 2730 flow. Second operand has 6 states, 6 states have (on average 138.33333333333334) internal successors, (830), 6 states have internal predecessors, (830), 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 11:32:41,448 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:32:41,448 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 238 [2022-11-20 11:32:41,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:32:50,892 INFO L130 PetriNetUnfolder]: 15015/40909 cut-off events. [2022-11-20 11:32:50,892 INFO L131 PetriNetUnfolder]: For 42048/42348 co-relation queries the response was YES. [2022-11-20 11:32:51,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110801 conditions, 40909 events. 15015/40909 cut-off events. For 42048/42348 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 405828 event pairs, 8126 based on Foata normal form. 66/38717 useless extension candidates. Maximal degree in co-relation 110718. Up to 27986 conditions per place. [2022-11-20 11:32:51,242 INFO L137 encePairwiseOnDemand]: 203/238 looper letters, 356 selfloop transitions, 172 changer transitions 0/654 dead transitions. [2022-11-20 11:32:51,242 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 654 transitions, 4778 flow [2022-11-20 11:32:51,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:32:51,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 11:32:51,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1063 transitions. [2022-11-20 11:32:51,246 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7443977591036415 [2022-11-20 11:32:51,246 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1063 transitions. [2022-11-20 11:32:51,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1063 transitions. [2022-11-20 11:32:51,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:32:51,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1063 transitions. [2022-11-20 11:32:51,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 177.16666666666666) internal successors, (1063), 6 states have internal predecessors, (1063), 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 11:32:51,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 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 11:32:51,254 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 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 11:32:51,255 INFO L175 Difference]: Start difference. First operand has 264 places, 447 transitions, 2730 flow. Second operand 6 states and 1063 transitions. [2022-11-20 11:32:51,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 654 transitions, 4778 flow [2022-11-20 11:32:51,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 654 transitions, 4778 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:32:51,458 INFO L231 Difference]: Finished difference. Result has 274 places, 594 transitions, 4302 flow [2022-11-20 11:32:51,459 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=2730, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4302, PETRI_PLACES=274, PETRI_TRANSITIONS=594} [2022-11-20 11:32:51,460 INFO L288 CegarLoopForPetriNet]: 223 programPoint places, 51 predicate places. [2022-11-20 11:32:51,460 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 594 transitions, 4302 flow [2022-11-20 11:32:51,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 138.33333333333334) internal successors, (830), 6 states have internal predecessors, (830), 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 11:32:51,462 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:32:51,462 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:32:51,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 11:32:51,462 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-20 11:32:51,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:32:51,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1457297609, now seen corresponding path program 1 times [2022-11-20 11:32:51,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:32:51,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103800675] [2022-11-20 11:32:51,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:32:51,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:32:51,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:32:51,907 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 11:32:51,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:32:51,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103800675] [2022-11-20 11:32:51,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103800675] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:32:51,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:32:51,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:32:51,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940382384] [2022-11-20 11:32:51,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:32:51,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:32:51,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:32:51,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:32:51,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:32:51,916 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 238 [2022-11-20 11:32:51,917 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 594 transitions, 4302 flow. Second operand has 6 states, 6 states have (on average 135.33333333333334) internal successors, (812), 6 states have internal predecessors, (812), 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 11:32:51,918 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:32:51,918 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 238 [2022-11-20 11:32:51,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:33:03,136 INFO L130 PetriNetUnfolder]: 16462/43320 cut-off events. [2022-11-20 11:33:03,137 INFO L131 PetriNetUnfolder]: For 65348/65465 co-relation queries the response was YES. [2022-11-20 11:33:03,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134048 conditions, 43320 events. 16462/43320 cut-off events. For 65348/65465 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 428063 event pairs, 8351 based on Foata normal form. 0/41291 useless extension candidates. Maximal degree in co-relation 133960. Up to 30988 conditions per place. [2022-11-20 11:33:03,501 INFO L137 encePairwiseOnDemand]: 207/238 looper letters, 482 selfloop transitions, 167 changer transitions 0/773 dead transitions. [2022-11-20 11:33:03,502 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 773 transitions, 6474 flow [2022-11-20 11:33:03,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:33:03,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 11:33:03,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1024 transitions. [2022-11-20 11:33:03,507 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7170868347338936 [2022-11-20 11:33:03,507 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1024 transitions. [2022-11-20 11:33:03,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1024 transitions. [2022-11-20 11:33:03,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:33:03,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1024 transitions. [2022-11-20 11:33:03,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 170.66666666666666) internal successors, (1024), 6 states have internal predecessors, (1024), 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 11:33:03,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 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 11:33:03,517 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 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 11:33:03,517 INFO L175 Difference]: Start difference. First operand has 274 places, 594 transitions, 4302 flow. Second operand 6 states and 1024 transitions. [2022-11-20 11:33:03,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 773 transitions, 6474 flow [2022-11-20 11:33:03,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 773 transitions, 6242 flow, removed 116 selfloop flow, removed 0 redundant places. [2022-11-20 11:33:03,786 INFO L231 Difference]: Finished difference. Result has 284 places, 721 transitions, 5510 flow [2022-11-20 11:33:03,787 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=4082, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=502, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5510, PETRI_PLACES=284, PETRI_TRANSITIONS=721} [2022-11-20 11:33:03,787 INFO L288 CegarLoopForPetriNet]: 223 programPoint places, 61 predicate places. [2022-11-20 11:33:03,788 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 721 transitions, 5510 flow [2022-11-20 11:33:03,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 135.33333333333334) internal successors, (812), 6 states have internal predecessors, (812), 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 11:33:03,788 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:33:03,789 INFO L209 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, 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] [2022-11-20 11:33:03,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 11:33:03,789 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-20 11:33:03,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:33:03,790 INFO L85 PathProgramCache]: Analyzing trace with hash -310920971, now seen corresponding path program 1 times [2022-11-20 11:33:03,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:33:03,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176704149] [2022-11-20 11:33:03,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:33:03,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:33:03,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:33:05,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 11:33:05,718 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.InterpolantChecker.checkInductivity(InterpolantChecker.java:409) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkLeafNode(Interpolator.java:383) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$ProofTreeWalker.walk(Interpolator.java:154) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:260) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:237) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:848) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:776) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:352) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:192) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:284) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:165) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:327) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:229) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) 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.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) 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 11:33:05,727 INFO L158 Benchmark]: Toolchain (without parser) took 60334.71ms. Allocated memory was 169.9MB in the beginning and 12.6GB in the end (delta: 12.5GB). Free memory was 123.7MB in the beginning and 10.0GB in the end (delta: -9.8GB). Peak memory consumption was 2.7GB. Max. memory is 16.1GB. [2022-11-20 11:33:05,727 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 136.3MB. Free memory is still 78.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:33:05,728 INFO L158 Benchmark]: CACSL2BoogieTranslator took 841.32ms. Allocated memory is still 169.9MB. Free memory was 123.7MB in the beginning and 97.5MB in the end (delta: 26.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-11-20 11:33:05,728 INFO L158 Benchmark]: Boogie Procedure Inliner took 104.20ms. Allocated memory is still 169.9MB. Free memory was 97.5MB in the beginning and 93.8MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 11:33:05,729 INFO L158 Benchmark]: Boogie Preprocessor took 85.71ms. Allocated memory is still 169.9MB. Free memory was 93.8MB in the beginning and 90.7MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 11:33:05,729 INFO L158 Benchmark]: RCFGBuilder took 954.28ms. Allocated memory is still 169.9MB. Free memory was 90.7MB in the beginning and 124.6MB in the end (delta: -34.0MB). Peak memory consumption was 23.2MB. Max. memory is 16.1GB. [2022-11-20 11:33:05,729 INFO L158 Benchmark]: TraceAbstraction took 58342.92ms. Allocated memory was 169.9MB in the beginning and 12.6GB in the end (delta: 12.5GB). Free memory was 123.6MB in the beginning and 10.0GB in the end (delta: -9.8GB). Peak memory consumption was 2.7GB. Max. memory is 16.1GB. [2022-11-20 11:33:05,734 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 136.3MB. Free memory is still 78.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 841.32ms. Allocated memory is still 169.9MB. Free memory was 123.7MB in the beginning and 97.5MB in the end (delta: 26.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 104.20ms. Allocated memory is still 169.9MB. Free memory was 97.5MB in the beginning and 93.8MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 85.71ms. Allocated memory is still 169.9MB. Free memory was 93.8MB in the beginning and 90.7MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 954.28ms. Allocated memory is still 169.9MB. Free memory was 90.7MB in the beginning and 124.6MB in the end (delta: -34.0MB). Peak memory consumption was 23.2MB. Max. memory is 16.1GB. * TraceAbstraction took 58342.92ms. Allocated memory was 169.9MB in the beginning and 12.6GB in the end (delta: 12.5GB). Free memory was 123.6MB in the beginning and 10.0GB in the end (delta: -9.8GB). Peak memory consumption was 2.7GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: null: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.InterpolantChecker.checkInductivity(InterpolantChecker.java:409) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-20 11:33:05,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-divine/ring_1w1r-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/config/svcomp-DataRace-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN --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 3a956b76a4ba98ce13df4d83ef2fb7ffa0973225ecb152c14bcfbb55b6546601 --- 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 11:33:08,661 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:33:08,663 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:33:08,706 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:33:08,706 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:33:08,710 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:33:08,713 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:33:08,719 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:33:08,722 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:33:08,727 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:33:08,728 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:33:08,729 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:33:08,730 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:33:08,731 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:33:08,732 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:33:08,733 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:33:08,734 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:33:08,734 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:33:08,736 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:33:08,738 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:33:08,744 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:33:08,748 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:33:08,750 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:33:08,751 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:33:08,764 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:33:08,764 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:33:08,765 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:33:08,766 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:33:08,767 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:33:08,768 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:33:08,768 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:33:08,769 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:33:08,770 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:33:08,771 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:33:08,789 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:33:08,790 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:33:08,791 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:33:08,791 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:33:08,791 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:33:08,792 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:33:08,793 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:33:08,794 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/config/svcomp-DataRace-32bit-Automizer_Bitvector.epf [2022-11-20 11:33:08,839 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:33:08,839 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:33:08,841 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:33:08,841 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:33:08,842 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:33:08,843 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:33:08,843 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:33:08,844 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:33:08,844 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:33:08,844 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:33:08,845 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:33:08,846 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:33:08,846 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:33:08,846 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:33:08,847 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:33:08,847 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:33:08,847 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:33:08,848 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-20 11:33:08,848 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 11:33:08,848 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 11:33:08,848 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:33:08,849 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:33:08,849 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:33:08,849 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:33:08,850 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:33:08,850 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:33:08,850 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:33:08,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:33:08,851 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:33:08,851 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:33:08,852 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:33:08,852 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 11:33:08,852 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 11:33:08,853 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:33:08,853 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:33:08,853 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:33:08,854 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 11:33:08,854 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a956b76a4ba98ce13df4d83ef2fb7ffa0973225ecb152c14bcfbb55b6546601 [2022-11-20 11:33:09,255 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:33:09,278 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:33:09,282 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:33:09,283 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:33:09,283 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:33:09,285 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/pthread-divine/ring_1w1r-1.i [2022-11-20 11:33:12,522 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:33:12,887 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:33:12,892 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i [2022-11-20 11:33:12,922 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/data/71c7d914e/5e430257009847ba94ae7f03b884c9cc/FLAG2dd2c7dca [2022-11-20 11:33:12,943 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/data/71c7d914e/5e430257009847ba94ae7f03b884c9cc [2022-11-20 11:33:12,945 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:33:12,947 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:33:12,950 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:33:12,951 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:33:12,962 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:33:12,963 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:33:12" (1/1) ... [2022-11-20 11:33:12,965 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6aa9170a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:33:12, skipping insertion in model container [2022-11-20 11:33:12,965 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:33:12" (1/1) ... [2022-11-20 11:33:12,974 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:33:13,041 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:33:13,238 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-20 11:33:13,632 WARN L237 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_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39095,39108] [2022-11-20 11:33:13,635 WARN L237 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_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39180,39193] [2022-11-20 11:33:13,636 WARN L237 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_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39232,39245] [2022-11-20 11:33:13,647 WARN L237 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_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39641,39654] [2022-11-20 11:33:13,649 WARN L237 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_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39726,39739] [2022-11-20 11:33:13,650 WARN L237 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_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39778,39791] [2022-11-20 11:33:13,660 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:33:13,680 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:33:13,702 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-20 11:33:13,768 WARN L237 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_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39095,39108] [2022-11-20 11:33:13,773 WARN L237 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_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39180,39193] [2022-11-20 11:33:13,774 WARN L237 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_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39232,39245] [2022-11-20 11:33:13,779 WARN L237 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_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39641,39654] [2022-11-20 11:33:13,781 WARN L237 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_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39726,39739] [2022-11-20 11:33:13,782 WARN L237 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_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i[39778,39791] [2022-11-20 11:33:13,792 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:33:13,869 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:33:13,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:33:13 WrapperNode [2022-11-20 11:33:13,870 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:33:13,872 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:33:13,872 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:33:13,873 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:33:13,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:33:13" (1/1) ... [2022-11-20 11:33:13,920 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:33:13" (1/1) ... [2022-11-20 11:33:13,967 INFO L138 Inliner]: procedures = 228, calls = 43, calls flagged for inlining = 10, calls inlined = 7, statements flattened = 198 [2022-11-20 11:33:13,968 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:33:13,969 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:33:13,969 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:33:13,969 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:33:13,980 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:33:13" (1/1) ... [2022-11-20 11:33:13,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:33:13" (1/1) ... [2022-11-20 11:33:13,986 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:33:13" (1/1) ... [2022-11-20 11:33:13,986 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:33:13" (1/1) ... [2022-11-20 11:33:14,005 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:33:13" (1/1) ... [2022-11-20 11:33:14,009 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:33:13" (1/1) ... [2022-11-20 11:33:14,012 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:33:13" (1/1) ... [2022-11-20 11:33:14,014 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:33:13" (1/1) ... [2022-11-20 11:33:14,018 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:33:14,019 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:33:14,020 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:33:14,020 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:33:14,021 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:33:13" (1/1) ... [2022-11-20 11:33:14,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:33:14,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:33:14,069 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:33:14,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:33:14,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-20 11:33:14,128 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:33:14,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:33:14,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-20 11:33:14,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 11:33:14,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:33:14,130 INFO L130 BoogieDeclarations]: Found specification of procedure reader_nowait_fn [2022-11-20 11:33:14,130 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_nowait_fn [2022-11-20 11:33:14,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:33:14,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:33:14,132 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 11:33:14,315 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:33:14,317 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:33:15,029 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:33:15,039 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:33:15,040 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-20 11:33:15,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:33:15 BoogieIcfgContainer [2022-11-20 11:33:15,047 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:33:15,049 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:33:15,051 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:33:15,055 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:33:15,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:33:12" (1/3) ... [2022-11-20 11:33:15,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d8ec4e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:33:15, skipping insertion in model container [2022-11-20 11:33:15,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:33:13" (2/3) ... [2022-11-20 11:33:15,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d8ec4e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:33:15, skipping insertion in model container [2022-11-20 11:33:15,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:33:15" (3/3) ... [2022-11-20 11:33:15,062 INFO L112 eAbstractionObserver]: Analyzing ICFG ring_1w1r-1.i [2022-11-20 11:33:15,072 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 11:33:15,084 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:33:15,086 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2022-11-20 11:33:15,086 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:33:15,255 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-20 11:33:15,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 233 places, 238 transitions, 484 flow [2022-11-20 11:33:15,443 INFO L130 PetriNetUnfolder]: 9/237 cut-off events. [2022-11-20 11:33:15,444 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-20 11:33:15,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242 conditions, 237 events. 9/237 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 514 event pairs, 0 based on Foata normal form. 0/213 useless extension candidates. Maximal degree in co-relation 179. Up to 2 conditions per place. [2022-11-20 11:33:15,454 INFO L82 GeneralOperation]: Start removeDead. Operand has 233 places, 238 transitions, 484 flow [2022-11-20 11:33:15,461 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 223 places, 228 transitions, 459 flow [2022-11-20 11:33:15,479 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:33:15,486 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;@2a5bd6d8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:33:15,487 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-11-20 11:33:15,500 INFO L130 PetriNetUnfolder]: 0/32 cut-off events. [2022-11-20 11:33:15,502 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:33:15,509 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:33:15,510 INFO L209 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] [2022-11-20 11:33:15,511 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-20 11:33:15,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:33:15,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1231723625, now seen corresponding path program 1 times [2022-11-20 11:33:15,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:33:15,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1214255444] [2022-11-20 11:33:15,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:33:15,534 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:33:15,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:33:15,540 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:33:15,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-20 11:33:15,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:33:15,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 11:33:15,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:33:15,887 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 11 [2022-11-20 11:33:15,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 25 treesize of output 28 [2022-11-20 11:33:15,994 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:33:15,995 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 36 treesize of output 44 [2022-11-20 11:33:16,063 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:33:16,064 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 47 treesize of output 60 [2022-11-20 11:33:16,126 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 11:33:16,127 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:33:16,128 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:33:16,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1214255444] [2022-11-20 11:33:16,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1214255444] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:33:16,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:33:16,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:33:16,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85300567] [2022-11-20 11:33:16,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:33:16,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:33:16,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:33:16,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:33:16,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:33:16,182 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 238 [2022-11-20 11:33:16,190 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 228 transitions, 459 flow. Second operand has 6 states, 6 states have (on average 135.5) internal successors, (813), 6 states have internal predecessors, (813), 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 11:33:16,190 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:33:16,191 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 238 [2022-11-20 11:33:16,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:33:18,034 INFO L130 PetriNetUnfolder]: 1707/5491 cut-off events. [2022-11-20 11:33:18,034 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-20 11:33:18,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8783 conditions, 5491 events. 1707/5491 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 44506 event pairs, 1512 based on Foata normal form. 376/5132 useless extension candidates. Maximal degree in co-relation 8712. Up to 3276 conditions per place. [2022-11-20 11:33:18,077 INFO L137 encePairwiseOnDemand]: 226/238 looper letters, 91 selfloop transitions, 5 changer transitions 0/221 dead transitions. [2022-11-20 11:33:18,078 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 221 transitions, 637 flow [2022-11-20 11:33:18,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:33:18,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 11:33:18,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 907 transitions. [2022-11-20 11:33:18,103 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6351540616246498 [2022-11-20 11:33:18,104 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 907 transitions. [2022-11-20 11:33:18,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 907 transitions. [2022-11-20 11:33:18,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:33:18,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 907 transitions. [2022-11-20 11:33:18,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 151.16666666666666) internal successors, (907), 6 states have internal predecessors, (907), 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 11:33:18,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 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 11:33:18,147 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 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 11:33:18,150 INFO L175 Difference]: Start difference. First operand has 223 places, 228 transitions, 459 flow. Second operand 6 states and 907 transitions. [2022-11-20 11:33:18,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 221 transitions, 637 flow [2022-11-20 11:33:18,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 221 transitions, 636 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:33:18,193 INFO L231 Difference]: Finished difference. Result has 226 places, 221 transitions, 454 flow [2022-11-20 11:33:18,195 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=454, PETRI_PLACES=226, PETRI_TRANSITIONS=221} [2022-11-20 11:33:18,199 INFO L288 CegarLoopForPetriNet]: 223 programPoint places, 3 predicate places. [2022-11-20 11:33:18,200 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 221 transitions, 454 flow [2022-11-20 11:33:18,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 135.5) internal successors, (813), 6 states have internal predecessors, (813), 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 11:33:18,202 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:33:18,203 INFO L209 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] [2022-11-20 11:33:18,220 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-20 11:33:18,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:33:18,416 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-20 11:33:18,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:33:18,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1636836643, now seen corresponding path program 1 times [2022-11-20 11:33:18,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:33:18,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [555091722] [2022-11-20 11:33:18,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:33:18,418 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:33:18,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:33:18,420 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:33:18,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-20 11:33:18,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:33:18,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 11:33:18,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:33:18,567 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 9 [2022-11-20 11:33:18,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 23 treesize of output 26 [2022-11-20 11:33:18,641 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:33:18,642 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 34 treesize of output 42 [2022-11-20 11:33:18,718 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:33:18,718 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 45 treesize of output 58 [2022-11-20 11:33:18,781 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 11:33:18,782 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:33:18,783 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:33:18,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [555091722] [2022-11-20 11:33:18,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [555091722] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:33:18,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:33:18,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:33:18,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969495760] [2022-11-20 11:33:18,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:33:18,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:33:18,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:33:18,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:33:18,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:33:18,796 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 238 [2022-11-20 11:33:18,798 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 221 transitions, 454 flow. Second operand has 6 states, 6 states have (on average 136.5) internal successors, (819), 6 states have internal predecessors, (819), 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 11:33:18,798 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:33:18,798 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 238 [2022-11-20 11:33:18,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:33:20,331 INFO L130 PetriNetUnfolder]: 1707/5490 cut-off events. [2022-11-20 11:33:20,332 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-20 11:33:20,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8786 conditions, 5490 events. 1707/5490 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 44501 event pairs, 1512 based on Foata normal form. 0/4756 useless extension candidates. Maximal degree in co-relation 8722. Up to 3282 conditions per place. [2022-11-20 11:33:20,365 INFO L137 encePairwiseOnDemand]: 232/238 looper letters, 90 selfloop transitions, 5 changer transitions 0/220 dead transitions. [2022-11-20 11:33:20,366 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 220 transitions, 642 flow [2022-11-20 11:33:20,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:33:20,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 11:33:20,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 900 transitions. [2022-11-20 11:33:20,370 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6302521008403361 [2022-11-20 11:33:20,370 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 900 transitions. [2022-11-20 11:33:20,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 900 transitions. [2022-11-20 11:33:20,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:33:20,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 900 transitions. [2022-11-20 11:33:20,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 150.0) internal successors, (900), 6 states have internal predecessors, (900), 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 11:33:20,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 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 11:33:20,378 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 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 11:33:20,379 INFO L175 Difference]: Start difference. First operand has 226 places, 221 transitions, 454 flow. Second operand 6 states and 900 transitions. [2022-11-20 11:33:20,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 220 transitions, 642 flow [2022-11-20 11:33:20,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 220 transitions, 632 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 11:33:20,390 INFO L231 Difference]: Finished difference. Result has 225 places, 220 transitions, 452 flow [2022-11-20 11:33:20,391 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=452, PETRI_PLACES=225, PETRI_TRANSITIONS=220} [2022-11-20 11:33:20,392 INFO L288 CegarLoopForPetriNet]: 223 programPoint places, 2 predicate places. [2022-11-20 11:33:20,392 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 220 transitions, 452 flow [2022-11-20 11:33:20,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 136.5) internal successors, (819), 6 states have internal predecessors, (819), 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 11:33:20,394 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:33:20,394 INFO L209 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] [2022-11-20 11:33:20,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:33:20,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:33:20,609 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-20 11:33:20,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:33:20,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1569833666, now seen corresponding path program 1 times [2022-11-20 11:33:20,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:33:20,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [497244852] [2022-11-20 11:33:20,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:33:20,611 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:33:20,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:33:20,612 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:33:20,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-20 11:33:20,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:33:20,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 11:33:20,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:33:20,798 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 11:33:20,822 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 22 [2022-11-20 11:33:20,866 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:33:20,867 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 36 [2022-11-20 11:33:20,938 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:33:20,939 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 50 [2022-11-20 11:33:20,992 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 11:33:20,992 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:33:20,992 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:33:20,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [497244852] [2022-11-20 11:33:20,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [497244852] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:33:20,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:33:20,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:33:20,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690121308] [2022-11-20 11:33:20,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:33:20,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:33:20,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:33:20,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:33:20,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:33:20,999 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 238 [2022-11-20 11:33:21,001 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 220 transitions, 452 flow. Second operand has 6 states, 6 states have (on average 137.16666666666666) internal successors, (823), 6 states have internal predecessors, (823), 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 11:33:21,002 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:33:21,002 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 238 [2022-11-20 11:33:21,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:33:23,822 INFO L130 PetriNetUnfolder]: 2913/8099 cut-off events. [2022-11-20 11:33:23,822 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-20 11:33:23,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13764 conditions, 8099 events. 2913/8099 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 64715 event pairs, 912 based on Foata normal form. 0/7087 useless extension candidates. Maximal degree in co-relation 13704. Up to 3784 conditions per place. [2022-11-20 11:33:23,872 INFO L137 encePairwiseOnDemand]: 217/238 looper letters, 242 selfloop transitions, 43 changer transitions 0/410 dead transitions. [2022-11-20 11:33:23,872 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 410 transitions, 1402 flow [2022-11-20 11:33:23,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:33:23,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 11:33:23,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1091 transitions. [2022-11-20 11:33:23,877 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7640056022408963 [2022-11-20 11:33:23,877 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1091 transitions. [2022-11-20 11:33:23,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1091 transitions. [2022-11-20 11:33:23,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:33:23,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1091 transitions. [2022-11-20 11:33:23,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 181.83333333333334) internal successors, (1091), 6 states have internal predecessors, (1091), 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 11:33:23,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 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 11:33:23,891 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 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 11:33:23,891 INFO L175 Difference]: Start difference. First operand has 225 places, 220 transitions, 452 flow. Second operand 6 states and 1091 transitions. [2022-11-20 11:33:23,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 410 transitions, 1402 flow [2022-11-20 11:33:23,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 410 transitions, 1392 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 11:33:23,901 INFO L231 Difference]: Finished difference. Result has 230 places, 262 transitions, 738 flow [2022-11-20 11:33:23,902 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=738, PETRI_PLACES=230, PETRI_TRANSITIONS=262} [2022-11-20 11:33:23,905 INFO L288 CegarLoopForPetriNet]: 223 programPoint places, 7 predicate places. [2022-11-20 11:33:23,905 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 262 transitions, 738 flow [2022-11-20 11:33:23,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 137.16666666666666) internal successors, (823), 6 states have internal predecessors, (823), 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 11:33:23,906 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:33:23,911 INFO L209 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] [2022-11-20 11:33:23,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:33:24,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:33:24,126 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-20 11:33:24,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:33:24,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1569421209, now seen corresponding path program 1 times [2022-11-20 11:33:24,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:33:24,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1704005835] [2022-11-20 11:33:24,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:33:24,127 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:33:24,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:33:24,129 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:33:24,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-20 11:33:24,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:33:24,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:33:24,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:33:24,271 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 11:33:24,271 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:33:24,272 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:33:24,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1704005835] [2022-11-20 11:33:24,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1704005835] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:33:24,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:33:24,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:33:24,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957272372] [2022-11-20 11:33:24,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:33:24,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:33:24,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:33:24,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:33:24,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:33:24,279 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 238 [2022-11-20 11:33:24,280 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 262 transitions, 738 flow. Second operand has 3 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 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 11:33:24,281 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:33:24,281 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 238 [2022-11-20 11:33:24,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:33:24,824 INFO L130 PetriNetUnfolder]: 309/2475 cut-off events. [2022-11-20 11:33:24,825 INFO L131 PetriNetUnfolder]: For 220/232 co-relation queries the response was YES. [2022-11-20 11:33:24,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3601 conditions, 2475 events. 309/2475 cut-off events. For 220/232 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 17604 event pairs, 16 based on Foata normal form. 0/2256 useless extension candidates. Maximal degree in co-relation 3544. Up to 340 conditions per place. [2022-11-20 11:33:24,846 INFO L137 encePairwiseOnDemand]: 235/238 looper letters, 7 selfloop transitions, 2 changer transitions 0/265 dead transitions. [2022-11-20 11:33:24,846 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 265 transitions, 762 flow [2022-11-20 11:33:24,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:33:24,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:33:24,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 685 transitions. [2022-11-20 11:33:24,849 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9593837535014006 [2022-11-20 11:33:24,849 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 685 transitions. [2022-11-20 11:33:24,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 685 transitions. [2022-11-20 11:33:24,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:33:24,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 685 transitions. [2022-11-20 11:33:24,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 228.33333333333334) internal successors, (685), 3 states have internal predecessors, (685), 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 11:33:24,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 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 11:33:24,855 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 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 11:33:24,855 INFO L175 Difference]: Start difference. First operand has 230 places, 262 transitions, 738 flow. Second operand 3 states and 685 transitions. [2022-11-20 11:33:24,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 265 transitions, 762 flow [2022-11-20 11:33:24,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 265 transitions, 762 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:33:24,866 INFO L231 Difference]: Finished difference. Result has 233 places, 263 transitions, 750 flow [2022-11-20 11:33:24,866 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=738, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=750, PETRI_PLACES=233, PETRI_TRANSITIONS=263} [2022-11-20 11:33:24,867 INFO L288 CegarLoopForPetriNet]: 223 programPoint places, 10 predicate places. [2022-11-20 11:33:24,868 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 263 transitions, 750 flow [2022-11-20 11:33:24,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 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 11:33:24,868 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:33:24,868 INFO L209 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] [2022-11-20 11:33:24,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-20 11:33:25,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:33:25,081 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-20 11:33:25,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:33:25,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1272499682, now seen corresponding path program 1 times [2022-11-20 11:33:25,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:33:25,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [769024204] [2022-11-20 11:33:25,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:33:25,083 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:33:25,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:33:25,084 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:33:25,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-20 11:33:25,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:33:25,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:33:25,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:33:25,207 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 11:33:25,208 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:33:25,208 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:33:25,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [769024204] [2022-11-20 11:33:25,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [769024204] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:33:25,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:33:25,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:33:25,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87201121] [2022-11-20 11:33:25,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:33:25,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:33:25,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:33:25,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:33:25,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:33:25,212 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 238 [2022-11-20 11:33:25,213 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 263 transitions, 750 flow. Second operand has 3 states, 3 states have (on average 224.33333333333334) internal successors, (673), 3 states have internal predecessors, (673), 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 11:33:25,213 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:33:25,213 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 238 [2022-11-20 11:33:25,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:33:26,019 INFO L130 PetriNetUnfolder]: 555/3861 cut-off events. [2022-11-20 11:33:26,019 INFO L131 PetriNetUnfolder]: For 450/513 co-relation queries the response was YES. [2022-11-20 11:33:26,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6109 conditions, 3861 events. 555/3861 cut-off events. For 450/513 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 30694 event pairs, 46 based on Foata normal form. 0/3544 useless extension candidates. Maximal degree in co-relation 6050. Up to 649 conditions per place. [2022-11-20 11:33:26,051 INFO L137 encePairwiseOnDemand]: 235/238 looper letters, 10 selfloop transitions, 2 changer transitions 0/267 dead transitions. [2022-11-20 11:33:26,052 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 267 transitions, 782 flow [2022-11-20 11:33:26,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:33:26,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:33:26,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 682 transitions. [2022-11-20 11:33:26,055 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9551820728291317 [2022-11-20 11:33:26,055 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 682 transitions. [2022-11-20 11:33:26,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 682 transitions. [2022-11-20 11:33:26,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:33:26,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 682 transitions. [2022-11-20 11:33:26,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 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 11:33:26,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 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 11:33:26,060 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 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 11:33:26,061 INFO L175 Difference]: Start difference. First operand has 233 places, 263 transitions, 750 flow. Second operand 3 states and 682 transitions. [2022-11-20 11:33:26,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 267 transitions, 782 flow [2022-11-20 11:33:26,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 267 transitions, 780 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:33:26,070 INFO L231 Difference]: Finished difference. Result has 235 places, 264 transitions, 760 flow [2022-11-20 11:33:26,071 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=760, PETRI_PLACES=235, PETRI_TRANSITIONS=264} [2022-11-20 11:33:26,072 INFO L288 CegarLoopForPetriNet]: 223 programPoint places, 12 predicate places. [2022-11-20 11:33:26,072 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 264 transitions, 760 flow [2022-11-20 11:33:26,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 224.33333333333334) internal successors, (673), 3 states have internal predecessors, (673), 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 11:33:26,072 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:33:26,073 INFO L209 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] [2022-11-20 11:33:26,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-20 11:33:26,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:33:26,287 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-20 11:33:26,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:33:26,287 INFO L85 PathProgramCache]: Analyzing trace with hash 982328460, now seen corresponding path program 1 times [2022-11-20 11:33:26,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:33:26,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1833724873] [2022-11-20 11:33:26,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:33:26,288 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:33:26,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:33:26,289 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:33:26,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-20 11:33:26,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:33:26,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 11:33:26,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:33:26,428 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 11:33:26,442 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 23 treesize of output 24 [2022-11-20 11:33:26,478 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:33:26,479 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 32 treesize of output 38 [2022-11-20 11:33:26,524 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:33:26,525 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 41 treesize of output 52 [2022-11-20 11:33:26,574 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 11:33:26,574 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:33:26,574 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:33:26,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1833724873] [2022-11-20 11:33:26,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1833724873] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:33:26,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:33:26,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:33:26,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756325921] [2022-11-20 11:33:26,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:33:26,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:33:26,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:33:26,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:33:26,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:33:26,577 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 238 [2022-11-20 11:33:26,577 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 264 transitions, 760 flow. Second operand has 6 states, 6 states have (on average 135.16666666666666) internal successors, (811), 6 states have internal predecessors, (811), 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 11:33:26,578 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:33:26,578 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 238 [2022-11-20 11:33:26,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:33:32,993 INFO L130 PetriNetUnfolder]: 11063/29110 cut-off events. [2022-11-20 11:33:32,993 INFO L131 PetriNetUnfolder]: For 9000/9175 co-relation queries the response was YES. [2022-11-20 11:33:33,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60906 conditions, 29110 events. 11063/29110 cut-off events. For 9000/9175 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 270962 event pairs, 2766 based on Foata normal form. 0/26522 useless extension candidates. Maximal degree in co-relation 60836. Up to 12020 conditions per place. [2022-11-20 11:33:33,168 INFO L137 encePairwiseOnDemand]: 214/238 looper letters, 319 selfloop transitions, 45 changer transitions 0/489 dead transitions. [2022-11-20 11:33:33,168 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 489 transitions, 2246 flow [2022-11-20 11:33:33,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:33:33,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 11:33:33,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1069 transitions. [2022-11-20 11:33:33,172 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7485994397759104 [2022-11-20 11:33:33,173 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1069 transitions. [2022-11-20 11:33:33,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1069 transitions. [2022-11-20 11:33:33,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:33:33,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1069 transitions. [2022-11-20 11:33:33,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 178.16666666666666) internal successors, (1069), 6 states have internal predecessors, (1069), 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 11:33:33,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 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 11:33:33,180 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 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 11:33:33,180 INFO L175 Difference]: Start difference. First operand has 235 places, 264 transitions, 760 flow. Second operand 6 states and 1069 transitions. [2022-11-20 11:33:33,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 489 transitions, 2246 flow [2022-11-20 11:33:33,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 489 transitions, 2244 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:33:33,215 INFO L231 Difference]: Finished difference. Result has 244 places, 308 transitions, 1150 flow [2022-11-20 11:33:33,215 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=758, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1150, PETRI_PLACES=244, PETRI_TRANSITIONS=308} [2022-11-20 11:33:33,218 INFO L288 CegarLoopForPetriNet]: 223 programPoint places, 21 predicate places. [2022-11-20 11:33:33,218 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 308 transitions, 1150 flow [2022-11-20 11:33:33,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 135.16666666666666) internal successors, (811), 6 states have internal predecessors, (811), 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 11:33:33,219 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:33:33,219 INFO L209 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] [2022-11-20 11:33:33,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-20 11:33:33,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:33:33,440 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-20 11:33:33,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:33:33,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1009204055, now seen corresponding path program 1 times [2022-11-20 11:33:33,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:33:33,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [25140640] [2022-11-20 11:33:33,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:33:33,442 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:33:33,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:33:33,443 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:33:33,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-20 11:33:33,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:33:33,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 11:33:33,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:33:33,618 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 11:33:33,641 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 29 treesize of output 30 [2022-11-20 11:33:33,690 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:33:33,690 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 41 treesize of output 47 [2022-11-20 11:33:33,759 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:33:33,759 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 53 treesize of output 64 [2022-11-20 11:33:33,834 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 11:33:33,834 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:33:33,834 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:33:33,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [25140640] [2022-11-20 11:33:33,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [25140640] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:33:33,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:33:33,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:33:33,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249688088] [2022-11-20 11:33:33,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:33:33,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:33:33,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:33:33,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:33:33,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:33:33,837 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 238 [2022-11-20 11:33:33,838 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 308 transitions, 1150 flow. Second operand has 6 states, 6 states have (on average 137.16666666666666) internal successors, (823), 6 states have internal predecessors, (823), 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 11:33:33,838 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:33:33,838 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 238 [2022-11-20 11:33:33,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:33:41,153 INFO L130 PetriNetUnfolder]: 11656/31592 cut-off events. [2022-11-20 11:33:41,153 INFO L131 PetriNetUnfolder]: For 18640/18758 co-relation queries the response was YES. [2022-11-20 11:33:41,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75059 conditions, 31592 events. 11656/31592 cut-off events. For 18640/18758 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 299772 event pairs, 6320 based on Foata normal form. 8/29380 useless extension candidates. Maximal degree in co-relation 74985. Up to 19882 conditions per place. [2022-11-20 11:33:41,514 INFO L137 encePairwiseOnDemand]: 223/238 looper letters, 373 selfloop transitions, 78 changer transitions 0/577 dead transitions. [2022-11-20 11:33:41,515 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 577 transitions, 3270 flow [2022-11-20 11:33:41,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:33:41,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 11:33:41,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1068 transitions. [2022-11-20 11:33:41,521 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7478991596638656 [2022-11-20 11:33:41,522 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1068 transitions. [2022-11-20 11:33:41,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1068 transitions. [2022-11-20 11:33:41,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:33:41,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1068 transitions. [2022-11-20 11:33:41,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 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 11:33:41,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 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 11:33:41,534 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 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 11:33:41,535 INFO L175 Difference]: Start difference. First operand has 244 places, 308 transitions, 1150 flow. Second operand 6 states and 1068 transitions. [2022-11-20 11:33:41,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 577 transitions, 3270 flow [2022-11-20 11:33:41,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 577 transitions, 3270 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:33:41,598 INFO L231 Difference]: Finished difference. Result has 254 places, 385 transitions, 1968 flow [2022-11-20 11:33:41,599 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=1150, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1968, PETRI_PLACES=254, PETRI_TRANSITIONS=385} [2022-11-20 11:33:41,600 INFO L288 CegarLoopForPetriNet]: 223 programPoint places, 31 predicate places. [2022-11-20 11:33:41,600 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 385 transitions, 1968 flow [2022-11-20 11:33:41,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 137.16666666666666) internal successors, (823), 6 states have internal predecessors, (823), 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 11:33:41,601 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:33:41,601 INFO L209 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, 1, 1, 1, 1] [2022-11-20 11:33:41,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-20 11:33:41,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:33:41,814 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-20 11:33:41,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:33:41,815 INFO L85 PathProgramCache]: Analyzing trace with hash 157236464, now seen corresponding path program 1 times [2022-11-20 11:33:41,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:33:41,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2028553956] [2022-11-20 11:33:41,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:33:41,815 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:33:41,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:33:41,817 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:33:41,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-20 11:33:41,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:33:41,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 11:33:41,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:33:41,968 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 11:33:41,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 22 [2022-11-20 11:33:42,012 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:33:42,013 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 36 [2022-11-20 11:33:42,056 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:33:42,057 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 50 [2022-11-20 11:33:42,101 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 11:33:42,102 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:33:42,102 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:33:42,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2028553956] [2022-11-20 11:33:42,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2028553956] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:33:42,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:33:42,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:33:42,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118126598] [2022-11-20 11:33:42,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:33:42,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:33:42,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:33:42,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:33:42,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:33:42,104 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 238 [2022-11-20 11:33:42,105 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 385 transitions, 1968 flow. Second operand has 6 states, 6 states have (on average 136.16666666666666) internal successors, (817), 6 states have internal predecessors, (817), 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 11:33:42,105 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:33:42,105 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 238 [2022-11-20 11:33:42,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:33:50,384 INFO L130 PetriNetUnfolder]: 13545/35609 cut-off events. [2022-11-20 11:33:50,384 INFO L131 PetriNetUnfolder]: For 29227/29404 co-relation queries the response was YES. [2022-11-20 11:33:50,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93068 conditions, 35609 events. 13545/35609 cut-off events. For 29227/29404 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 342132 event pairs, 4776 based on Foata normal form. 0/33378 useless extension candidates. Maximal degree in co-relation 92989. Up to 18056 conditions per place. [2022-11-20 11:33:50,616 INFO L137 encePairwiseOnDemand]: 227/238 looper letters, 458 selfloop transitions, 66 changer transitions 0/650 dead transitions. [2022-11-20 11:33:50,617 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 650 transitions, 4264 flow [2022-11-20 11:33:50,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:33:50,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 11:33:50,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1057 transitions. [2022-11-20 11:33:50,621 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7401960784313726 [2022-11-20 11:33:50,621 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1057 transitions. [2022-11-20 11:33:50,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1057 transitions. [2022-11-20 11:33:50,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:33:50,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1057 transitions. [2022-11-20 11:33:50,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 176.16666666666666) internal successors, (1057), 6 states have internal predecessors, (1057), 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 11:33:50,628 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 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 11:33:50,628 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 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 11:33:50,629 INFO L175 Difference]: Start difference. First operand has 254 places, 385 transitions, 1968 flow. Second operand 6 states and 1057 transitions. [2022-11-20 11:33:50,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 650 transitions, 4264 flow [2022-11-20 11:33:50,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 650 transitions, 4264 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:33:50,757 INFO L231 Difference]: Finished difference. Result has 264 places, 447 transitions, 2730 flow [2022-11-20 11:33:50,758 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=1968, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2730, PETRI_PLACES=264, PETRI_TRANSITIONS=447} [2022-11-20 11:33:50,759 INFO L288 CegarLoopForPetriNet]: 223 programPoint places, 41 predicate places. [2022-11-20 11:33:50,759 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 447 transitions, 2730 flow [2022-11-20 11:33:50,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 136.16666666666666) internal successors, (817), 6 states have internal predecessors, (817), 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 11:33:50,760 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:33:50,760 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:33:50,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-20 11:33:50,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:33:50,973 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting reader_nowait_fnErr3ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-20 11:33:50,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:33:50,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1611811336, now seen corresponding path program 1 times [2022-11-20 11:33:50,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:33:50,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1170099518] [2022-11-20 11:33:50,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:33:50,975 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:33:50,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:33:50,977 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:33:51,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-20 11:33:51,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:33:51,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 11:33:51,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:33:51,167 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 9 [2022-11-20 11:33:51,179 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 23 treesize of output 26 [2022-11-20 11:33:51,212 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:33:51,212 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 34 treesize of output 42 [2022-11-20 11:33:51,259 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:33:51,260 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 45 treesize of output 58 [2022-11-20 11:33:51,308 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 11:33:51,308 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:33:51,309 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:33:51,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1170099518] [2022-11-20 11:33:51,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1170099518] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:33:51,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:33:51,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:33:51,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162396465] [2022-11-20 11:33:51,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:33:51,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:33:51,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:33:51,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:33:51,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:33:51,311 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 238 [2022-11-20 11:33:51,312 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 447 transitions, 2730 flow. Second operand has 6 states, 6 states have (on average 138.33333333333334) internal successors, (830), 6 states have internal predecessors, (830), 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 11:33:51,312 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:33:51,312 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 238 [2022-11-20 11:33:51,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:34:01,122 INFO L130 PetriNetUnfolder]: 15015/40762 cut-off events. [2022-11-20 11:34:01,123 INFO L131 PetriNetUnfolder]: For 42030/42330 co-relation queries the response was YES. [2022-11-20 11:34:01,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110654 conditions, 40762 events. 15015/40762 cut-off events. For 42030/42330 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 403483 event pairs, 8126 based on Foata normal form. 66/38582 useless extension candidates. Maximal degree in co-relation 110570. Up to 27986 conditions per place. [2022-11-20 11:34:01,451 INFO L137 encePairwiseOnDemand]: 203/238 looper letters, 356 selfloop transitions, 172 changer transitions 0/654 dead transitions. [2022-11-20 11:34:01,451 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 654 transitions, 4778 flow [2022-11-20 11:34:01,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:34:01,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 11:34:01,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1063 transitions. [2022-11-20 11:34:01,454 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7443977591036415 [2022-11-20 11:34:01,454 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1063 transitions. [2022-11-20 11:34:01,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1063 transitions. [2022-11-20 11:34:01,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:34:01,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1063 transitions. [2022-11-20 11:34:01,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 177.16666666666666) internal successors, (1063), 6 states have internal predecessors, (1063), 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 11:34:01,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 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 11:34:01,462 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 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 11:34:01,463 INFO L175 Difference]: Start difference. First operand has 264 places, 447 transitions, 2730 flow. Second operand 6 states and 1063 transitions. [2022-11-20 11:34:01,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 654 transitions, 4778 flow [2022-11-20 11:34:01,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 654 transitions, 4778 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:34:01,622 INFO L231 Difference]: Finished difference. Result has 274 places, 594 transitions, 4302 flow [2022-11-20 11:34:01,623 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=2730, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4302, PETRI_PLACES=274, PETRI_TRANSITIONS=594} [2022-11-20 11:34:01,624 INFO L288 CegarLoopForPetriNet]: 223 programPoint places, 51 predicate places. [2022-11-20 11:34:01,624 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 594 transitions, 4302 flow [2022-11-20 11:34:01,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 138.33333333333334) internal successors, (830), 6 states have internal predecessors, (830), 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 11:34:01,625 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:34:01,625 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:34:01,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-20 11:34:01,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:34:01,839 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-20 11:34:01,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:34:01,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1896658099, now seen corresponding path program 1 times [2022-11-20 11:34:01,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:34:01,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1666930874] [2022-11-20 11:34:01,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:34:01,841 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:34:01,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:34:01,842 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:34:01,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-20 11:34:02,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:34:02,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 11:34:02,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:34:02,046 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 14 [2022-11-20 11:34:02,066 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 31 treesize of output 34 [2022-11-20 11:34:02,108 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:34:02,109 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 45 treesize of output 53 [2022-11-20 11:34:02,176 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:34:02,178 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 59 treesize of output 72 [2022-11-20 11:34:02,250 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 11:34:02,251 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:34:02,251 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:34:02,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1666930874] [2022-11-20 11:34:02,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1666930874] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:34:02,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:34:02,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:34:02,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182642049] [2022-11-20 11:34:02,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:34:02,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:34:02,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:34:02,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:34:02,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:34:02,253 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 238 [2022-11-20 11:34:02,254 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 594 transitions, 4302 flow. Second operand has 6 states, 6 states have (on average 135.33333333333334) internal successors, (812), 6 states have internal predecessors, (812), 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 11:34:02,254 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:34:02,254 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 238 [2022-11-20 11:34:02,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:34:14,083 INFO L130 PetriNetUnfolder]: 16462/43085 cut-off events. [2022-11-20 11:34:14,083 INFO L131 PetriNetUnfolder]: For 65333/65458 co-relation queries the response was YES. [2022-11-20 11:34:14,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133813 conditions, 43085 events. 16462/43085 cut-off events. For 65333/65458 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 424020 event pairs, 8351 based on Foata normal form. 0/41068 useless extension candidates. Maximal degree in co-relation 133724. Up to 30988 conditions per place. [2022-11-20 11:34:14,411 INFO L137 encePairwiseOnDemand]: 207/238 looper letters, 482 selfloop transitions, 167 changer transitions 0/773 dead transitions. [2022-11-20 11:34:14,412 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 773 transitions, 6474 flow [2022-11-20 11:34:14,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:34:14,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 11:34:14,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1024 transitions. [2022-11-20 11:34:14,416 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7170868347338936 [2022-11-20 11:34:14,417 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1024 transitions. [2022-11-20 11:34:14,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1024 transitions. [2022-11-20 11:34:14,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:34:14,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1024 transitions. [2022-11-20 11:34:14,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 170.66666666666666) internal successors, (1024), 6 states have internal predecessors, (1024), 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 11:34:14,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 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 11:34:14,424 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 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 11:34:14,424 INFO L175 Difference]: Start difference. First operand has 274 places, 594 transitions, 4302 flow. Second operand 6 states and 1024 transitions. [2022-11-20 11:34:14,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 773 transitions, 6474 flow [2022-11-20 11:34:14,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 773 transitions, 6242 flow, removed 116 selfloop flow, removed 0 redundant places. [2022-11-20 11:34:14,631 INFO L231 Difference]: Finished difference. Result has 284 places, 721 transitions, 5510 flow [2022-11-20 11:34:14,632 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=4082, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=502, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5510, PETRI_PLACES=284, PETRI_TRANSITIONS=721} [2022-11-20 11:34:14,632 INFO L288 CegarLoopForPetriNet]: 223 programPoint places, 61 predicate places. [2022-11-20 11:34:14,632 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 721 transitions, 5510 flow [2022-11-20 11:34:14,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 135.33333333333334) internal successors, (812), 6 states have internal predecessors, (812), 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 11:34:14,633 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:34:14,633 INFO L209 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, 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] [2022-11-20 11:34:14,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-20 11:34:14,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:34:14,847 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-20 11:34:14,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:34:14,848 INFO L85 PathProgramCache]: Analyzing trace with hash 31682943, now seen corresponding path program 1 times [2022-11-20 11:34:14,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:34:14,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [776767263] [2022-11-20 11:34:14,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:34:14,848 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:34:14,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:34:14,850 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:34:14,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf7c7d5-a3fe-41d6-b015-9005bf441cf7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-20 11:34:15,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:34:15,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 64 conjunts are in the unsatisfiable core [2022-11-20 11:34:15,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:34:15,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 7 [2022-11-20 11:34:15,090 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 11:34:15,091 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 13 [2022-11-20 11:34:15,276 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 11:34:15,419 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 14 treesize of output 16 [2022-11-20 11:34:16,045 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 11:34:16,219 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 11:34:16,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:34:16,351 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 26 treesize of output 29 [2022-11-20 11:34:16,389 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 23 treesize of output 24 [2022-11-20 11:34:16,511 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 32 treesize of output 38 [2022-11-20 11:34:16,646 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 52 [2022-11-20 11:34:16,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:34:16,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:34:16,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:34:16,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:34:16,824 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 0 case distinctions, treesize of input 53 treesize of output 71 [2022-11-20 11:34:16,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:34:16,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:34:16,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:34:16,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:34:16,885 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 0 case distinctions, treesize of input 53 treesize of output 71 [2022-11-20 11:34:16,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:34:16,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:34:16,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:34:16,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:34:16,932 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 0 case distinctions, treesize of input 50 treesize of output 68 [2022-11-20 11:34:17,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:34:17,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:34:17,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:34:17,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:34:17,203 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 0 case distinctions, treesize of input 48 treesize of output 66 [2022-11-20 11:34:17,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:34:17,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:34:17,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:34:17,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:34:17,256 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 0 case distinctions, treesize of input 50 treesize of output 68 [2022-11-20 11:34:17,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:34:17,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:34:17,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:34:17,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:34:17,299 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 0 case distinctions, treesize of input 50 treesize of output 68 [2022-11-20 11:34:17,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:34:17,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:34:17,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:34:17,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:34:17,338 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 0 case distinctions, treesize of input 50 treesize of output 68 [2022-11-20 11:34:17,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:34:17,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:34:17,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:34:17,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:34:17,460 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:34:17,460 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 48 treesize of output 66 [2022-11-20 11:34:17,561 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 11:34:17,561 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:34:17,562 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:34:17,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [776767263] [2022-11-20 11:34:17,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [776767263] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:34:17,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:34:17,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-11-20 11:34:17,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533896392] [2022-11-20 11:34:17,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:34:17,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-20 11:34:17,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:34:17,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-20 11:34:17,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2022-11-20 11:34:17,567 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 238 [2022-11-20 11:34:17,569 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 721 transitions, 5510 flow. Second operand has 25 states, 25 states have (on average 90.84) internal successors, (2271), 25 states have internal predecessors, (2271), 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 11:34:17,569 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:34:17,570 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 238 [2022-11-20 11:34:17,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand