./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 2329fc70 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_3a1af719-7e7b-4e06-8657-f777cb261b95/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1af719-7e7b-4e06-8657-f777cb261b95/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1af719-7e7b-4e06-8657-f777cb261b95/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1af719-7e7b-4e06-8657-f777cb261b95/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1af719-7e7b-4e06-8657-f777cb261b95/bin/uautomizer-uyxdKDjOR8/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1af719-7e7b-4e06-8657-f777cb261b95/bin/uautomizer-uyxdKDjOR8 --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 306d85d0b5300749928a8392783cd7ec5acf0c4622b6bdba80c3589786dd98ad --- 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-2329fc7 [2022-12-13 15:09:47,343 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 15:09:47,344 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 15:09:47,357 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 15:09:47,357 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 15:09:47,358 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 15:09:47,359 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 15:09:47,360 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 15:09:47,361 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 15:09:47,361 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 15:09:47,362 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 15:09:47,363 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 15:09:47,363 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 15:09:47,364 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 15:09:47,364 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 15:09:47,365 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 15:09:47,366 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 15:09:47,366 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 15:09:47,367 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 15:09:47,368 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 15:09:47,369 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 15:09:47,370 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 15:09:47,371 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 15:09:47,371 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 15:09:47,382 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 15:09:47,383 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 15:09:47,383 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 15:09:47,384 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 15:09:47,384 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 15:09:47,385 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 15:09:47,385 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 15:09:47,385 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 15:09:47,386 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 15:09:47,387 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 15:09:47,387 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 15:09:47,387 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 15:09:47,388 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 15:09:47,388 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 15:09:47,388 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 15:09:47,389 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 15:09:47,389 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 15:09:47,390 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1af719-7e7b-4e06-8657-f777cb261b95/bin/uautomizer-uyxdKDjOR8/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-12-13 15:09:47,405 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 15:09:47,405 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 15:09:47,405 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 15:09:47,411 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 15:09:47,411 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 15:09:47,411 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 15:09:47,412 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 15:09:47,412 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 15:09:47,412 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 15:09:47,412 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 15:09:47,412 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 15:09:47,412 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 15:09:47,412 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 15:09:47,412 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 15:09:47,413 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 15:09:47,413 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 15:09:47,413 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 15:09:47,413 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 15:09:47,413 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-12-13 15:09:47,413 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 15:09:47,413 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 15:09:47,413 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 15:09:47,413 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 15:09:47,413 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 15:09:47,413 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 15:09:47,413 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 15:09:47,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:09:47,414 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 15:09:47,414 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 15:09:47,414 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 15:09:47,414 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 15:09:47,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 15:09:47,414 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 15:09:47,414 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 15:09:47,414 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 15:09:47,414 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 15:09:47,414 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 15:09:47,415 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_3a1af719-7e7b-4e06-8657-f777cb261b95/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1af719-7e7b-4e06-8657-f777cb261b95/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 306d85d0b5300749928a8392783cd7ec5acf0c4622b6bdba80c3589786dd98ad [2022-12-13 15:09:47,574 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 15:09:47,592 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 15:09:47,594 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 15:09:47,595 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 15:09:47,596 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 15:09:47,596 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1af719-7e7b-4e06-8657-f777cb261b95/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c [2022-12-13 15:09:50,135 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 15:09:50,296 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 15:09:50,296 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1af719-7e7b-4e06-8657-f777cb261b95/sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c [2022-12-13 15:09:50,303 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1af719-7e7b-4e06-8657-f777cb261b95/bin/uautomizer-uyxdKDjOR8/data/57bc3616a/0ffaabfb041e483087cb87b60da40efc/FLAG668b164a1 [2022-12-13 15:09:50,316 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1af719-7e7b-4e06-8657-f777cb261b95/bin/uautomizer-uyxdKDjOR8/data/57bc3616a/0ffaabfb041e483087cb87b60da40efc [2022-12-13 15:09:50,318 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 15:09:50,319 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 15:09:50,320 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 15:09:50,321 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 15:09:50,324 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 15:09:50,325 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:09:50" (1/1) ... [2022-12-13 15:09:50,325 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ca9cd59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:09:50, skipping insertion in model container [2022-12-13 15:09:50,326 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:09:50" (1/1) ... [2022-12-13 15:09:50,332 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 15:09:50,351 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 15:09:50,503 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:09:50,507 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:09:50,509 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:09:50,510 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:09:50,511 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:09:50,514 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:09:50,528 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_3a1af719-7e7b-4e06-8657-f777cb261b95/sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c[2823,2836] [2022-12-13 15:09:50,536 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:09:50,544 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 15:09:50,560 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:09:50,564 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:09:50,565 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:09:50,565 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:09:50,566 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:09:50,568 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:09:50,580 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_3a1af719-7e7b-4e06-8657-f777cb261b95/sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c[2823,2836] [2022-12-13 15:09:50,586 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:09:50,597 INFO L208 MainTranslator]: Completed translation [2022-12-13 15:09:50,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:09:50 WrapperNode [2022-12-13 15:09:50,598 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 15:09:50,598 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 15:09:50,599 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 15:09:50,599 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 15:09:50,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:09:50" (1/1) ... [2022-12-13 15:09:50,616 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:09:50" (1/1) ... [2022-12-13 15:09:50,650 INFO L138 Inliner]: procedures = 26, calls = 57, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 371 [2022-12-13 15:09:50,651 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 15:09:50,651 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 15:09:50,651 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 15:09:50,652 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 15:09:50,659 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:09:50" (1/1) ... [2022-12-13 15:09:50,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:09:50" (1/1) ... [2022-12-13 15:09:50,667 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:09:50" (1/1) ... [2022-12-13 15:09:50,667 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:09:50" (1/1) ... [2022-12-13 15:09:50,688 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:09:50" (1/1) ... [2022-12-13 15:09:50,694 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:09:50" (1/1) ... [2022-12-13 15:09:50,698 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:09:50" (1/1) ... [2022-12-13 15:09:50,700 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:09:50" (1/1) ... [2022-12-13 15:09:50,705 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 15:09:50,706 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 15:09:50,706 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 15:09:50,706 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 15:09:50,707 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:09:50" (1/1) ... [2022-12-13 15:09:50,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:09:50,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1af719-7e7b-4e06-8657-f777cb261b95/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:09:50,735 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1af719-7e7b-4e06-8657-f777cb261b95/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 15:09:50,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1af719-7e7b-4e06-8657-f777cb261b95/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 15:09:50,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 15:09:50,769 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 15:09:50,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 15:09:50,769 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 15:09:50,769 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 15:09:50,769 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 15:09:50,769 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 15:09:50,769 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 15:09:50,769 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 15:09:50,769 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 15:09:50,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 15:09:50,770 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 15:09:50,770 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 15:09:50,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 15:09:50,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 15:09:50,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 15:09:50,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 15:09:50,772 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 15:09:50,870 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 15:09:50,871 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 15:09:51,485 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 15:09:51,665 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 15:09:51,665 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-12-13 15:09:51,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:09:51 BoogieIcfgContainer [2022-12-13 15:09:51,668 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 15:09:51,671 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 15:09:51,671 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 15:09:51,674 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 15:09:51,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 03:09:50" (1/3) ... [2022-12-13 15:09:51,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4300325 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:09:51, skipping insertion in model container [2022-12-13 15:09:51,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:09:50" (2/3) ... [2022-12-13 15:09:51,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4300325 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:09:51, skipping insertion in model container [2022-12-13 15:09:51,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:09:51" (3/3) ... [2022-12-13 15:09:51,677 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-max.wvr.c [2022-12-13 15:09:51,685 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 15:09:51,695 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 15:09:51,696 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 58 error locations. [2022-12-13 15:09:51,696 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 15:09:51,802 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 15:09:51,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 511 places, 528 transitions, 1080 flow [2022-12-13 15:09:51,939 INFO L130 PetriNetUnfolder]: 27/525 cut-off events. [2022-12-13 15:09:51,939 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 15:09:51,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 538 conditions, 525 events. 27/525 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 621 event pairs, 0 based on Foata normal form. 0/440 useless extension candidates. Maximal degree in co-relation 421. Up to 3 conditions per place. [2022-12-13 15:09:51,946 INFO L82 GeneralOperation]: Start removeDead. Operand has 511 places, 528 transitions, 1080 flow [2022-12-13 15:09:51,952 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 464 places, 478 transitions, 974 flow [2022-12-13 15:09:51,955 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 15:09:51,963 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 464 places, 478 transitions, 974 flow [2022-12-13 15:09:51,965 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 464 places, 478 transitions, 974 flow [2022-12-13 15:09:51,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 464 places, 478 transitions, 974 flow [2022-12-13 15:09:52,034 INFO L130 PetriNetUnfolder]: 24/478 cut-off events. [2022-12-13 15:09:52,035 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 15:09:52,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 491 conditions, 478 events. 24/478 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 613 event pairs, 0 based on Foata normal form. 0/397 useless extension candidates. Maximal degree in co-relation 421. Up to 3 conditions per place. [2022-12-13 15:09:52,041 INFO L119 LiptonReduction]: Number of co-enabled transitions 13362 [2022-12-13 15:10:19,346 INFO L134 LiptonReduction]: Checked pairs total: 104430 [2022-12-13 15:10:19,346 INFO L136 LiptonReduction]: Total number of compositions: 494 [2022-12-13 15:10:19,356 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 15:10:19,360 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;@57f31fe3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 15:10:19,360 INFO L358 AbstractCegarLoop]: Starting to check reachability of 90 error locations. [2022-12-13 15:10:19,361 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 15:10:19,361 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:10:19,362 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:10:19,362 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 15:10:19,362 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2022-12-13 15:10:19,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:10:19,366 INFO L85 PathProgramCache]: Analyzing trace with hash 2016, now seen corresponding path program 1 times [2022-12-13 15:10:19,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:10:19,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348081926] [2022-12-13 15:10:19,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:10:19,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:10:19,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:10:19,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:10:19,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:10:19,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348081926] [2022-12-13 15:10:19,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348081926] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:10:19,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:10:19,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 15:10:19,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926375458] [2022-12-13 15:10:19,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:10:19,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 15:10:19,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:10:19,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 15:10:19,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 15:10:19,468 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 486 out of 1022 [2022-12-13 15:10:19,470 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 143 transitions, 304 flow. Second operand has 2 states, 2 states have (on average 486.5) internal successors, (973), 2 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:10:19,470 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:10:19,470 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 486 of 1022 [2022-12-13 15:10:19,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:10:19,974 INFO L130 PetriNetUnfolder]: 1464/3602 cut-off events. [2022-12-13 15:10:19,975 INFO L131 PetriNetUnfolder]: For 93/93 co-relation queries the response was YES. [2022-12-13 15:10:19,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5638 conditions, 3602 events. 1464/3602 cut-off events. For 93/93 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 29492 event pairs, 753 based on Foata normal form. 526/3232 useless extension candidates. Maximal degree in co-relation 5158. Up to 1909 conditions per place. [2022-12-13 15:10:19,997 INFO L137 encePairwiseOnDemand]: 976/1022 looper letters, 35 selfloop transitions, 0 changer transitions 1/97 dead transitions. [2022-12-13 15:10:19,997 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 97 transitions, 284 flow [2022-12-13 15:10:19,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 15:10:20,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 15:10:20,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1054 transitions. [2022-12-13 15:10:20,011 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5156555772994129 [2022-12-13 15:10:20,012 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1054 transitions. [2022-12-13 15:10:20,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1054 transitions. [2022-12-13 15:10:20,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:10:20,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1054 transitions. [2022-12-13 15:10:20,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 527.0) internal successors, (1054), 2 states have internal predecessors, (1054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:10:20,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 1022.0) internal successors, (3066), 3 states have internal predecessors, (3066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:10:20,032 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 1022.0) internal successors, (3066), 3 states have internal predecessors, (3066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:10:20,034 INFO L175 Difference]: Start difference. First operand has 141 places, 143 transitions, 304 flow. Second operand 2 states and 1054 transitions. [2022-12-13 15:10:20,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 97 transitions, 284 flow [2022-12-13 15:10:20,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 97 transitions, 272 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-13 15:10:20,042 INFO L231 Difference]: Finished difference. Result has 93 places, 96 transitions, 197 flow [2022-12-13 15:10:20,044 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1022, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=197, PETRI_PLACES=93, PETRI_TRANSITIONS=96} [2022-12-13 15:10:20,047 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, -48 predicate places. [2022-12-13 15:10:20,048 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 96 transitions, 197 flow [2022-12-13 15:10:20,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 486.5) internal successors, (973), 2 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:10:20,049 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:10:20,049 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:10:20,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 15:10:20,049 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2022-12-13 15:10:20,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:10:20,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1282380923, now seen corresponding path program 1 times [2022-12-13 15:10:20,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:10:20,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663803297] [2022-12-13 15:10:20,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:10:20,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:10:20,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:10:20,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:10:20,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:10:20,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663803297] [2022-12-13 15:10:20,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663803297] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:10:20,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:10:20,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:10:20,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074878636] [2022-12-13 15:10:20,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:10:20,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:10:20,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:10:20,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:10:20,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:10:20,255 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 464 out of 1022 [2022-12-13 15:10:20,257 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 96 transitions, 197 flow. Second operand has 3 states, 3 states have (on average 466.3333333333333) internal successors, (1399), 3 states have internal predecessors, (1399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:10:20,257 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:10:20,258 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 464 of 1022 [2022-12-13 15:10:20,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:10:20,787 INFO L130 PetriNetUnfolder]: 2244/5202 cut-off events. [2022-12-13 15:10:20,787 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2022-12-13 15:10:20,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8369 conditions, 5202 events. 2244/5202 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 42270 event pairs, 1615 based on Foata normal form. 0/4218 useless extension candidates. Maximal degree in co-relation 8366. Up to 3097 conditions per place. [2022-12-13 15:10:20,810 INFO L137 encePairwiseOnDemand]: 1018/1022 looper letters, 38 selfloop transitions, 1 changer transitions 0/93 dead transitions. [2022-12-13 15:10:20,810 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 93 transitions, 269 flow [2022-12-13 15:10:20,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:10:20,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:10:20,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1434 transitions. [2022-12-13 15:10:20,813 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46771037181996084 [2022-12-13 15:10:20,813 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1434 transitions. [2022-12-13 15:10:20,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1434 transitions. [2022-12-13 15:10:20,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:10:20,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1434 transitions. [2022-12-13 15:10:20,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 478.0) internal successors, (1434), 3 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:10:20,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1022.0) internal successors, (4088), 4 states have internal predecessors, (4088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:10:20,820 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1022.0) internal successors, (4088), 4 states have internal predecessors, (4088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:10:20,821 INFO L175 Difference]: Start difference. First operand has 93 places, 96 transitions, 197 flow. Second operand 3 states and 1434 transitions. [2022-12-13 15:10:20,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 93 transitions, 269 flow [2022-12-13 15:10:20,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 93 transitions, 269 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 15:10:20,823 INFO L231 Difference]: Finished difference. Result has 91 places, 93 transitions, 193 flow [2022-12-13 15:10:20,823 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1022, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=193, PETRI_PLACES=91, PETRI_TRANSITIONS=93} [2022-12-13 15:10:20,823 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, -50 predicate places. [2022-12-13 15:10:20,823 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 93 transitions, 193 flow [2022-12-13 15:10:20,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 466.3333333333333) internal successors, (1399), 3 states have internal predecessors, (1399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:10:20,824 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:10:20,824 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:10:20,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 15:10:20,824 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2022-12-13 15:10:20,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:10:20,825 INFO L85 PathProgramCache]: Analyzing trace with hash 287979962, now seen corresponding path program 1 times [2022-12-13 15:10:20,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:10:20,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099439099] [2022-12-13 15:10:20,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:10:20,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:10:20,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:10:20,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:10:20,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:10:20,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099439099] [2022-12-13 15:10:20,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099439099] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:10:20,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:10:20,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:10:20,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557758846] [2022-12-13 15:10:20,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:10:20,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:10:20,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:10:20,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:10:20,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:10:20,941 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 473 out of 1022 [2022-12-13 15:10:20,943 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 93 transitions, 193 flow. Second operand has 3 states, 3 states have (on average 475.6666666666667) internal successors, (1427), 3 states have internal predecessors, (1427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:10:20,943 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:10:20,943 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 473 of 1022 [2022-12-13 15:10:20,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:10:21,336 INFO L130 PetriNetUnfolder]: 1885/4239 cut-off events. [2022-12-13 15:10:21,336 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2022-12-13 15:10:21,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6769 conditions, 4239 events. 1885/4239 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 32989 event pairs, 1010 based on Foata normal form. 0/3295 useless extension candidates. Maximal degree in co-relation 6765. Up to 2453 conditions per place. [2022-12-13 15:10:21,355 INFO L137 encePairwiseOnDemand]: 1019/1022 looper letters, 37 selfloop transitions, 1 changer transitions 0/91 dead transitions. [2022-12-13 15:10:21,356 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 91 transitions, 265 flow [2022-12-13 15:10:21,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:10:21,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:10:21,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1459 transitions. [2022-12-13 15:10:21,358 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47586431833007176 [2022-12-13 15:10:21,358 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1459 transitions. [2022-12-13 15:10:21,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1459 transitions. [2022-12-13 15:10:21,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:10:21,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1459 transitions. [2022-12-13 15:10:21,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 486.3333333333333) internal successors, (1459), 3 states have internal predecessors, (1459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:10:21,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1022.0) internal successors, (4088), 4 states have internal predecessors, (4088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:10:21,365 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1022.0) internal successors, (4088), 4 states have internal predecessors, (4088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:10:21,365 INFO L175 Difference]: Start difference. First operand has 91 places, 93 transitions, 193 flow. Second operand 3 states and 1459 transitions. [2022-12-13 15:10:21,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 91 transitions, 265 flow [2022-12-13 15:10:21,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 91 transitions, 264 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 15:10:21,367 INFO L231 Difference]: Finished difference. Result has 90 places, 91 transitions, 190 flow [2022-12-13 15:10:21,368 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1022, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=90, PETRI_TRANSITIONS=91} [2022-12-13 15:10:21,368 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, -51 predicate places. [2022-12-13 15:10:21,368 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 91 transitions, 190 flow [2022-12-13 15:10:21,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 475.6666666666667) internal successors, (1427), 3 states have internal predecessors, (1427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:10:21,369 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:10:21,369 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:10:21,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 15:10:21,370 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2022-12-13 15:10:21,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:10:21,370 INFO L85 PathProgramCache]: Analyzing trace with hash 729605301, now seen corresponding path program 1 times [2022-12-13 15:10:21,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:10:21,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528705076] [2022-12-13 15:10:21,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:10:21,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:10:21,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:10:21,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:10:21,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:10:21,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528705076] [2022-12-13 15:10:21,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528705076] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:10:21,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:10:21,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:10:21,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209170350] [2022-12-13 15:10:21,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:10:21,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:10:21,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:10:21,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:10:21,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:10:21,591 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 474 out of 1022 [2022-12-13 15:10:21,592 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 91 transitions, 190 flow. Second operand has 3 states, 3 states have (on average 477.3333333333333) internal successors, (1432), 3 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:10:21,592 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:10:21,592 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 474 of 1022 [2022-12-13 15:10:21,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:10:21,981 INFO L130 PetriNetUnfolder]: 1464/3422 cut-off events. [2022-12-13 15:10:21,981 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2022-12-13 15:10:21,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5387 conditions, 3422 events. 1464/3422 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 26745 event pairs, 753 based on Foata normal form. 0/2617 useless extension candidates. Maximal degree in co-relation 5383. Up to 1908 conditions per place. [2022-12-13 15:10:21,993 INFO L137 encePairwiseOnDemand]: 1019/1022 looper letters, 34 selfloop transitions, 2 changer transitions 0/92 dead transitions. [2022-12-13 15:10:21,994 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 92 transitions, 264 flow [2022-12-13 15:10:21,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:10:21,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:10:21,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1459 transitions. [2022-12-13 15:10:21,996 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47586431833007176 [2022-12-13 15:10:21,996 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1459 transitions. [2022-12-13 15:10:21,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1459 transitions. [2022-12-13 15:10:21,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:10:21,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1459 transitions. [2022-12-13 15:10:21,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 486.3333333333333) internal successors, (1459), 3 states have internal predecessors, (1459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:10:22,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1022.0) internal successors, (4088), 4 states have internal predecessors, (4088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:10:22,004 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1022.0) internal successors, (4088), 4 states have internal predecessors, (4088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:10:22,004 INFO L175 Difference]: Start difference. First operand has 90 places, 91 transitions, 190 flow. Second operand 3 states and 1459 transitions. [2022-12-13 15:10:22,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 92 transitions, 264 flow [2022-12-13 15:10:22,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 92 transitions, 263 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 15:10:22,005 INFO L231 Difference]: Finished difference. Result has 92 places, 92 transitions, 201 flow [2022-12-13 15:10:22,005 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1022, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=201, PETRI_PLACES=92, PETRI_TRANSITIONS=92} [2022-12-13 15:10:22,006 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, -49 predicate places. [2022-12-13 15:10:22,006 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 92 transitions, 201 flow [2022-12-13 15:10:22,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 477.3333333333333) internal successors, (1432), 3 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:10:22,006 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:10:22,007 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:10:22,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 15:10:22,007 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2022-12-13 15:10:22,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:10:22,007 INFO L85 PathProgramCache]: Analyzing trace with hash -443226901, now seen corresponding path program 1 times [2022-12-13 15:10:22,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:10:22,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528603898] [2022-12-13 15:10:22,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:10:22,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:10:22,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:10:22,102 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:10:22,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:10:22,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528603898] [2022-12-13 15:10:22,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528603898] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:10:22,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:10:22,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:10:22,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497338734] [2022-12-13 15:10:22,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:10:22,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 15:10:22,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:10:22,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 15:10:22,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 15:10:22,191 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 472 out of 1022 [2022-12-13 15:10:22,194 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 92 transitions, 201 flow. Second operand has 4 states, 4 states have (on average 474.75) internal successors, (1899), 4 states have internal predecessors, (1899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:10:22,195 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:10:22,195 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 472 of 1022 [2022-12-13 15:10:22,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:10:22,575 INFO L130 PetriNetUnfolder]: 1464/3424 cut-off events. [2022-12-13 15:10:22,575 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2022-12-13 15:10:22,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5397 conditions, 3424 events. 1464/3424 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 26722 event pairs, 753 based on Foata normal form. 0/2618 useless extension candidates. Maximal degree in co-relation 5392. Up to 1907 conditions per place. [2022-12-13 15:10:22,588 INFO L137 encePairwiseOnDemand]: 1015/1022 looper letters, 32 selfloop transitions, 6 changer transitions 0/94 dead transitions. [2022-12-13 15:10:22,588 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 94 transitions, 281 flow [2022-12-13 15:10:22,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 15:10:22,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 15:10:22,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1928 transitions. [2022-12-13 15:10:22,598 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47162426614481406 [2022-12-13 15:10:22,598 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1928 transitions. [2022-12-13 15:10:22,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1928 transitions. [2022-12-13 15:10:22,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:10:22,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1928 transitions. [2022-12-13 15:10:22,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 482.0) internal successors, (1928), 4 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:10:22,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1022.0) internal successors, (5110), 5 states have internal predecessors, (5110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:10:22,607 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1022.0) internal successors, (5110), 5 states have internal predecessors, (5110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:10:22,607 INFO L175 Difference]: Start difference. First operand has 92 places, 92 transitions, 201 flow. Second operand 4 states and 1928 transitions. [2022-12-13 15:10:22,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 94 transitions, 281 flow [2022-12-13 15:10:22,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 94 transitions, 277 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 15:10:22,609 INFO L231 Difference]: Finished difference. Result has 95 places, 94 transitions, 225 flow [2022-12-13 15:10:22,609 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1022, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=225, PETRI_PLACES=95, PETRI_TRANSITIONS=94} [2022-12-13 15:10:22,610 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, -46 predicate places. [2022-12-13 15:10:22,610 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 94 transitions, 225 flow [2022-12-13 15:10:22,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 474.75) internal successors, (1899), 4 states have internal predecessors, (1899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:10:22,611 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:10:22,611 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:10:22,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 15:10:22,611 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2022-12-13 15:10:22,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:10:22,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1195174629, now seen corresponding path program 1 times [2022-12-13 15:10:22,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:10:22,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588645685] [2022-12-13 15:10:22,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:10:22,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:10:22,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:10:22,996 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 15:10:22,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:10:22,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588645685] [2022-12-13 15:10:22,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588645685] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:10:22,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:10:22,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 15:10:22,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041251085] [2022-12-13 15:10:22,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:10:22,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 15:10:22,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:10:22,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 15:10:22,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 15:10:23,456 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 465 out of 1022 [2022-12-13 15:10:23,458 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 94 transitions, 225 flow. Second operand has 6 states, 6 states have (on average 468.0) internal successors, (2808), 6 states have internal predecessors, (2808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:10:23,458 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:10:23,459 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 465 of 1022 [2022-12-13 15:10:23,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:10:25,193 INFO L130 PetriNetUnfolder]: 7780/13371 cut-off events. [2022-12-13 15:10:25,193 INFO L131 PetriNetUnfolder]: For 20/32 co-relation queries the response was YES. [2022-12-13 15:10:25,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23223 conditions, 13371 events. 7780/13371 cut-off events. For 20/32 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 102551 event pairs, 1475 based on Foata normal form. 4/10219 useless extension candidates. Maximal degree in co-relation 23217. Up to 5477 conditions per place. [2022-12-13 15:10:25,246 INFO L137 encePairwiseOnDemand]: 1015/1022 looper letters, 115 selfloop transitions, 9 changer transitions 0/174 dead transitions. [2022-12-13 15:10:25,246 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 174 transitions, 635 flow [2022-12-13 15:10:25,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 15:10:25,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 15:10:25,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2912 transitions. [2022-12-13 15:10:25,251 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4748858447488584 [2022-12-13 15:10:25,251 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2912 transitions. [2022-12-13 15:10:25,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2912 transitions. [2022-12-13 15:10:25,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:10:25,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2912 transitions. [2022-12-13 15:10:25,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 485.3333333333333) internal successors, (2912), 6 states have internal predecessors, (2912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:10:25,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1022.0) internal successors, (7154), 7 states have internal predecessors, (7154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:10:25,264 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1022.0) internal successors, (7154), 7 states have internal predecessors, (7154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:10:25,264 INFO L175 Difference]: Start difference. First operand has 95 places, 94 transitions, 225 flow. Second operand 6 states and 2912 transitions. [2022-12-13 15:10:25,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 174 transitions, 635 flow [2022-12-13 15:10:25,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 174 transitions, 634 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 15:10:25,267 INFO L231 Difference]: Finished difference. Result has 104 places, 102 transitions, 288 flow [2022-12-13 15:10:25,267 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1022, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=288, PETRI_PLACES=104, PETRI_TRANSITIONS=102} [2022-12-13 15:10:25,267 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, -37 predicate places. [2022-12-13 15:10:25,268 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 102 transitions, 288 flow [2022-12-13 15:10:25,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 468.0) internal successors, (2808), 6 states have internal predecessors, (2808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:10:25,269 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:10:25,269 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:10:25,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 15:10:25,269 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2022-12-13 15:10:25,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:10:25,269 INFO L85 PathProgramCache]: Analyzing trace with hash -176018674, now seen corresponding path program 1 times [2022-12-13 15:10:25,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:10:25,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043646156] [2022-12-13 15:10:25,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:10:25,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:10:25,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:10:25,396 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 15:10:25,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:10:25,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043646156] [2022-12-13 15:10:25,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043646156] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:10:25,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680758963] [2022-12-13 15:10:25,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:10:25,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:10:25,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1af719-7e7b-4e06-8657-f777cb261b95/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:10:25,398 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1af719-7e7b-4e06-8657-f777cb261b95/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:10:25,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1af719-7e7b-4e06-8657-f777cb261b95/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 15:10:25,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:10:25,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 15:10:25,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:10:25,600 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 15:10:25,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:10:25,642 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 15:10:25,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680758963] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:10:25,642 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:10:25,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-12-13 15:10:25,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037991032] [2022-12-13 15:10:25,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:10:25,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 15:10:25,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:10:25,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 15:10:25,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-12-13 15:10:26,274 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 462 out of 1022 [2022-12-13 15:10:26,281 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 102 transitions, 288 flow. Second operand has 12 states, 12 states have (on average 463.6666666666667) internal successors, (5564), 12 states have internal predecessors, (5564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:10:26,281 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:10:26,281 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 462 of 1022 [2022-12-13 15:10:26,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:10:28,254 INFO L130 PetriNetUnfolder]: 5656/11573 cut-off events. [2022-12-13 15:10:28,255 INFO L131 PetriNetUnfolder]: For 1464/1585 co-relation queries the response was YES. [2022-12-13 15:10:28,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21304 conditions, 11573 events. 5656/11573 cut-off events. For 1464/1585 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 99967 event pairs, 1979 based on Foata normal form. 29/9220 useless extension candidates. Maximal degree in co-relation 21294. Up to 3870 conditions per place. [2022-12-13 15:10:28,322 INFO L137 encePairwiseOnDemand]: 1012/1022 looper letters, 132 selfloop transitions, 21 changer transitions 0/212 dead transitions. [2022-12-13 15:10:28,322 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 212 transitions, 963 flow [2022-12-13 15:10:28,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 15:10:28,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-13 15:10:28,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 4751 transitions. [2022-12-13 15:10:28,331 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4648727984344423 [2022-12-13 15:10:28,331 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 4751 transitions. [2022-12-13 15:10:28,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 4751 transitions. [2022-12-13 15:10:28,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:10:28,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 4751 transitions. [2022-12-13 15:10:28,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 475.1) internal successors, (4751), 10 states have internal predecessors, (4751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:10:28,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 1022.0) internal successors, (11242), 11 states have internal predecessors, (11242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:10:28,353 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 1022.0) internal successors, (11242), 11 states have internal predecessors, (11242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:10:28,354 INFO L175 Difference]: Start difference. First operand has 104 places, 102 transitions, 288 flow. Second operand 10 states and 4751 transitions. [2022-12-13 15:10:28,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 212 transitions, 963 flow [2022-12-13 15:10:28,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 212 transitions, 963 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 15:10:28,366 INFO L231 Difference]: Finished difference. Result has 118 places, 117 transitions, 438 flow [2022-12-13 15:10:28,366 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1022, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=438, PETRI_PLACES=118, PETRI_TRANSITIONS=117} [2022-12-13 15:10:28,367 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, -23 predicate places. [2022-12-13 15:10:28,367 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 117 transitions, 438 flow [2022-12-13 15:10:28,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 463.6666666666667) internal successors, (5564), 12 states have internal predecessors, (5564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:10:28,368 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:10:28,368 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] [2022-12-13 15:10:28,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1af719-7e7b-4e06-8657-f777cb261b95/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 15:10:28,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1af719-7e7b-4e06-8657-f777cb261b95/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:10:28,569 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2022-12-13 15:10:28,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:10:28,570 INFO L85 PathProgramCache]: Analyzing trace with hash 434705341, now seen corresponding path program 1 times [2022-12-13 15:10:28,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:10:28,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147947074] [2022-12-13 15:10:28,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:10:28,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:10:28,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:10:28,734 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 15:10:28,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:10:28,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147947074] [2022-12-13 15:10:28,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147947074] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:10:28,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523677341] [2022-12-13 15:10:28,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:10:28,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:10:28,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1af719-7e7b-4e06-8657-f777cb261b95/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:10:28,736 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1af719-7e7b-4e06-8657-f777cb261b95/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:10:28,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1af719-7e7b-4e06-8657-f777cb261b95/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 15:10:28,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:10:28,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 15:10:28,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:10:28,943 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 15:10:28,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:10:28,985 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 15:10:28,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523677341] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:10:28,985 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:10:28,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-12-13 15:10:28,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604163746] [2022-12-13 15:10:28,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:10:28,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 15:10:28,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:10:28,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 15:10:28,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-12-13 15:10:29,394 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 462 out of 1022 [2022-12-13 15:10:29,399 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 117 transitions, 438 flow. Second operand has 12 states, 12 states have (on average 464.1666666666667) internal successors, (5570), 12 states have internal predecessors, (5570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:10:29,399 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:10:29,399 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 462 of 1022 [2022-12-13 15:10:29,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:10:30,879 INFO L130 PetriNetUnfolder]: 3944/8544 cut-off events. [2022-12-13 15:10:30,879 INFO L131 PetriNetUnfolder]: For 1892/2107 co-relation queries the response was YES. [2022-12-13 15:10:30,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16063 conditions, 8544 events. 3944/8544 cut-off events. For 1892/2107 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 74064 event pairs, 1273 based on Foata normal form. 74/7115 useless extension candidates. Maximal degree in co-relation 16048. Up to 3219 conditions per place. [2022-12-13 15:10:30,935 INFO L137 encePairwiseOnDemand]: 1012/1022 looper letters, 112 selfloop transitions, 21 changer transitions 0/194 dead transitions. [2022-12-13 15:10:30,935 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 194 transitions, 909 flow [2022-12-13 15:10:30,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 15:10:30,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-13 15:10:30,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 4751 transitions. [2022-12-13 15:10:30,945 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4648727984344423 [2022-12-13 15:10:30,945 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 4751 transitions. [2022-12-13 15:10:30,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 4751 transitions. [2022-12-13 15:10:30,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:10:30,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 4751 transitions. [2022-12-13 15:10:30,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 475.1) internal successors, (4751), 10 states have internal predecessors, (4751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:10:30,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 1022.0) internal successors, (11242), 11 states have internal predecessors, (11242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:10:30,970 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 1022.0) internal successors, (11242), 11 states have internal predecessors, (11242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:10:30,970 INFO L175 Difference]: Start difference. First operand has 118 places, 117 transitions, 438 flow. Second operand 10 states and 4751 transitions. [2022-12-13 15:10:30,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 194 transitions, 909 flow [2022-12-13 15:10:30,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 194 transitions, 887 flow, removed 5 selfloop flow, removed 1 redundant places. [2022-12-13 15:10:30,987 INFO L231 Difference]: Finished difference. Result has 129 places, 120 transitions, 481 flow [2022-12-13 15:10:30,988 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1022, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=481, PETRI_PLACES=129, PETRI_TRANSITIONS=120} [2022-12-13 15:10:30,988 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, -12 predicate places. [2022-12-13 15:10:30,988 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 120 transitions, 481 flow [2022-12-13 15:10:30,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 464.1666666666667) internal successors, (5570), 12 states have internal predecessors, (5570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:10:30,990 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:10:30,990 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:10:30,995 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1af719-7e7b-4e06-8657-f777cb261b95/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 15:10:31,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1af719-7e7b-4e06-8657-f777cb261b95/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:10:31,191 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2022-12-13 15:10:31,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:10:31,191 INFO L85 PathProgramCache]: Analyzing trace with hash -619889154, now seen corresponding path program 2 times [2022-12-13 15:10:31,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:10:31,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055334966] [2022-12-13 15:10:31,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:10:31,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:10:31,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:10:31,563 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-13 15:10:31,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:10:31,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055334966] [2022-12-13 15:10:31,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055334966] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:10:31,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:10:31,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 15:10:31,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597773898] [2022-12-13 15:10:31,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:10:31,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 15:10:31,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:10:31,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 15:10:31,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 15:10:32,085 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 458 out of 1022 [2022-12-13 15:10:32,086 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 120 transitions, 481 flow. Second operand has 6 states, 6 states have (on average 460.5) internal successors, (2763), 6 states have internal predecessors, (2763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:10:32,087 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:10:32,087 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 458 of 1022 [2022-12-13 15:10:32,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:10:34,641 INFO L130 PetriNetUnfolder]: 12094/20092 cut-off events. [2022-12-13 15:10:34,641 INFO L131 PetriNetUnfolder]: For 9197/9753 co-relation queries the response was YES. [2022-12-13 15:10:34,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47023 conditions, 20092 events. 12094/20092 cut-off events. For 9197/9753 co-relation queries the response was YES. Maximal size of possible extension queue 898. Compared 157351 event pairs, 2338 based on Foata normal form. 57/17264 useless extension candidates. Maximal degree in co-relation 47005. Up to 9044 conditions per place. [2022-12-13 15:10:34,777 INFO L137 encePairwiseOnDemand]: 1006/1022 looper letters, 119 selfloop transitions, 33 changer transitions 0/203 dead transitions. [2022-12-13 15:10:34,777 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 203 transitions, 1059 flow [2022-12-13 15:10:34,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 15:10:34,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 15:10:34,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2863 transitions. [2022-12-13 15:10:34,782 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4668949771689498 [2022-12-13 15:10:34,782 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2863 transitions. [2022-12-13 15:10:34,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2863 transitions. [2022-12-13 15:10:34,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:10:34,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2863 transitions. [2022-12-13 15:10:34,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 477.1666666666667) internal successors, (2863), 6 states have internal predecessors, (2863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:10:34,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1022.0) internal successors, (7154), 7 states have internal predecessors, (7154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:10:34,790 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1022.0) internal successors, (7154), 7 states have internal predecessors, (7154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:10:34,790 INFO L175 Difference]: Start difference. First operand has 129 places, 120 transitions, 481 flow. Second operand 6 states and 2863 transitions. [2022-12-13 15:10:34,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 203 transitions, 1059 flow [2022-12-13 15:10:34,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 203 transitions, 1038 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 15:10:34,935 INFO L231 Difference]: Finished difference. Result has 136 places, 152 transitions, 766 flow [2022-12-13 15:10:34,935 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1022, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=766, PETRI_PLACES=136, PETRI_TRANSITIONS=152} [2022-12-13 15:10:34,936 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, -5 predicate places. [2022-12-13 15:10:34,936 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 152 transitions, 766 flow [2022-12-13 15:10:34,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 460.5) internal successors, (2763), 6 states have internal predecessors, (2763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:10:34,936 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:10:34,936 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:10:34,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 15:10:34,937 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err7ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2022-12-13 15:10:34,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:10:34,937 INFO L85 PathProgramCache]: Analyzing trace with hash -2036680401, now seen corresponding path program 1 times [2022-12-13 15:10:34,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:10:34,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955456634] [2022-12-13 15:10:34,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:10:34,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:10:34,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:10:34,986 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-13 15:10:34,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:10:34,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955456634] [2022-12-13 15:10:34,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955456634] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:10:34,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:10:34,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:10:34,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129875617] [2022-12-13 15:10:34,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:10:34,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:10:34,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:10:34,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:10:34,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:10:34,999 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 478 out of 1022 [2022-12-13 15:10:35,000 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 152 transitions, 766 flow. Second operand has 3 states, 3 states have (on average 481.6666666666667) internal successors, (1445), 3 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:10:35,000 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:10:35,000 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 478 of 1022 [2022-12-13 15:10:35,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:10:37,989 INFO L130 PetriNetUnfolder]: 12185/23982 cut-off events. [2022-12-13 15:10:37,989 INFO L131 PetriNetUnfolder]: For 22359/24329 co-relation queries the response was YES. [2022-12-13 15:10:38,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61123 conditions, 23982 events. 12185/23982 cut-off events. For 22359/24329 co-relation queries the response was YES. Maximal size of possible extension queue 720. Compared 219680 event pairs, 2270 based on Foata normal form. 104/20979 useless extension candidates. Maximal degree in co-relation 61100. Up to 9114 conditions per place. [2022-12-13 15:10:38,174 INFO L137 encePairwiseOnDemand]: 1018/1022 looper letters, 124 selfloop transitions, 6 changer transitions 0/200 dead transitions. [2022-12-13 15:10:38,174 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 200 transitions, 1338 flow [2022-12-13 15:10:38,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:10:38,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:10:38,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1492 transitions. [2022-12-13 15:10:38,178 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4866275277234181 [2022-12-13 15:10:38,178 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1492 transitions. [2022-12-13 15:10:38,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1492 transitions. [2022-12-13 15:10:38,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:10:38,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1492 transitions. [2022-12-13 15:10:38,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 497.3333333333333) internal successors, (1492), 3 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:10:38,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1022.0) internal successors, (4088), 4 states have internal predecessors, (4088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:10:38,184 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1022.0) internal successors, (4088), 4 states have internal predecessors, (4088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:10:38,184 INFO L175 Difference]: Start difference. First operand has 136 places, 152 transitions, 766 flow. Second operand 3 states and 1492 transitions. [2022-12-13 15:10:38,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 200 transitions, 1338 flow [2022-12-13 15:10:38,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 200 transitions, 1338 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 15:10:38,281 INFO L231 Difference]: Finished difference. Result has 138 places, 155 transitions, 810 flow [2022-12-13 15:10:38,281 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1022, PETRI_DIFFERENCE_MINUEND_FLOW=764, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=810, PETRI_PLACES=138, PETRI_TRANSITIONS=155} [2022-12-13 15:10:38,281 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, -3 predicate places. [2022-12-13 15:10:38,281 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 155 transitions, 810 flow [2022-12-13 15:10:38,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 481.6666666666667) internal successors, (1445), 3 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:10:38,282 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:10:38,282 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:10:38,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 15:10:38,282 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err8ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2022-12-13 15:10:38,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:10:38,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1287426553, now seen corresponding path program 1 times [2022-12-13 15:10:38,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:10:38,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082696367] [2022-12-13 15:10:38,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:10:38,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:10:38,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:10:38,340 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-13 15:10:38,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:10:38,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082696367] [2022-12-13 15:10:38,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082696367] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:10:38,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:10:38,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:10:38,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776274875] [2022-12-13 15:10:38,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:10:38,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:10:38,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:10:38,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:10:38,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:10:38,356 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 473 out of 1022 [2022-12-13 15:10:38,358 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 155 transitions, 810 flow. Second operand has 3 states, 3 states have (on average 477.0) internal successors, (1431), 3 states have internal predecessors, (1431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:10:38,358 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:10:38,358 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 473 of 1022 [2022-12-13 15:10:38,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:10:41,368 INFO L130 PetriNetUnfolder]: 13371/24582 cut-off events. [2022-12-13 15:10:41,368 INFO L131 PetriNetUnfolder]: For 28380/30695 co-relation queries the response was YES. [2022-12-13 15:10:41,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65571 conditions, 24582 events. 13371/24582 cut-off events. For 28380/30695 co-relation queries the response was YES. Maximal size of possible extension queue 781. Compared 213938 event pairs, 5404 based on Foata normal form. 120/21987 useless extension candidates. Maximal degree in co-relation 65547. Up to 16640 conditions per place. [2022-12-13 15:10:41,532 INFO L137 encePairwiseOnDemand]: 1019/1022 looper letters, 85 selfloop transitions, 2 changer transitions 0/153 dead transitions. [2022-12-13 15:10:41,532 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 153 transitions, 980 flow [2022-12-13 15:10:41,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:10:41,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:10:41,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1458 transitions. [2022-12-13 15:10:41,534 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4755381604696673 [2022-12-13 15:10:41,534 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1458 transitions. [2022-12-13 15:10:41,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1458 transitions. [2022-12-13 15:10:41,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:10:41,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1458 transitions. [2022-12-13 15:10:41,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 486.0) internal successors, (1458), 3 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:10:41,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1022.0) internal successors, (4088), 4 states have internal predecessors, (4088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:10:41,538 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1022.0) internal successors, (4088), 4 states have internal predecessors, (4088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:10:41,538 INFO L175 Difference]: Start difference. First operand has 138 places, 155 transitions, 810 flow. Second operand 3 states and 1458 transitions. [2022-12-13 15:10:41,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 153 transitions, 980 flow [2022-12-13 15:10:41,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 153 transitions, 974 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 15:10:41,634 INFO L231 Difference]: Finished difference. Result has 137 places, 153 transitions, 804 flow [2022-12-13 15:10:41,634 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1022, PETRI_DIFFERENCE_MINUEND_FLOW=800, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=804, PETRI_PLACES=137, PETRI_TRANSITIONS=153} [2022-12-13 15:10:41,635 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, -4 predicate places. [2022-12-13 15:10:41,635 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 153 transitions, 804 flow [2022-12-13 15:10:41,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 477.0) internal successors, (1431), 3 states have internal predecessors, (1431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:10:41,635 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:10:41,635 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:10:41,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 15:10:41,635 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2022-12-13 15:10:41,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:10:41,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1293540045, now seen corresponding path program 2 times [2022-12-13 15:10:41,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:10:41,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273950540] [2022-12-13 15:10:41,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:10:41,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:10:41,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:10:42,997 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-13 15:10:42,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:10:42,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273950540] [2022-12-13 15:10:42,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273950540] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:10:42,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:10:42,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 15:10:42,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380248624] [2022-12-13 15:10:42,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:10:42,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 15:10:42,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:10:42,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 15:10:42,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-12-13 15:10:44,524 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 453 out of 1022 [2022-12-13 15:10:44,529 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 153 transitions, 804 flow. Second operand has 11 states, 11 states have (on average 454.8181818181818) internal successors, (5003), 11 states have internal predecessors, (5003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:10:44,529 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:10:44,529 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 453 of 1022 [2022-12-13 15:10:44,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:10:49,406 INFO L130 PetriNetUnfolder]: 23033/36246 cut-off events. [2022-12-13 15:10:49,407 INFO L131 PetriNetUnfolder]: For 39871/43623 co-relation queries the response was YES. [2022-12-13 15:10:49,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101030 conditions, 36246 events. 23033/36246 cut-off events. For 39871/43623 co-relation queries the response was YES. Maximal size of possible extension queue 1044. Compared 277927 event pairs, 2829 based on Foata normal form. 1368/33668 useless extension candidates. Maximal degree in co-relation 101005. Up to 10140 conditions per place. [2022-12-13 15:10:49,657 INFO L137 encePairwiseOnDemand]: 1016/1022 looper letters, 218 selfloop transitions, 8 changer transitions 0/284 dead transitions. [2022-12-13 15:10:49,657 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 284 transitions, 1948 flow [2022-12-13 15:10:49,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 15:10:49,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 15:10:49,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3284 transitions. [2022-12-13 15:10:49,662 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45904389152921443 [2022-12-13 15:10:49,662 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3284 transitions. [2022-12-13 15:10:49,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3284 transitions. [2022-12-13 15:10:49,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:10:49,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3284 transitions. [2022-12-13 15:10:49,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 469.14285714285717) internal successors, (3284), 7 states have internal predecessors, (3284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:10:49,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1022.0) internal successors, (8176), 8 states have internal predecessors, (8176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:10:49,670 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1022.0) internal successors, (8176), 8 states have internal predecessors, (8176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:10:49,670 INFO L175 Difference]: Start difference. First operand has 137 places, 153 transitions, 804 flow. Second operand 7 states and 3284 transitions. [2022-12-13 15:10:49,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 284 transitions, 1948 flow [2022-12-13 15:10:49,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 284 transitions, 1939 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 15:10:49,942 INFO L231 Difference]: Finished difference. Result has 140 places, 152 transitions, 807 flow [2022-12-13 15:10:49,943 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1022, PETRI_DIFFERENCE_MINUEND_FLOW=791, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=807, PETRI_PLACES=140, PETRI_TRANSITIONS=152} [2022-12-13 15:10:49,943 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, -1 predicate places. [2022-12-13 15:10:49,943 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 152 transitions, 807 flow [2022-12-13 15:10:49,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 454.8181818181818) internal successors, (5003), 11 states have internal predecessors, (5003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:10:49,944 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:10:49,944 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:10:49,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 15:10:49,944 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2022-12-13 15:10:49,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:10:49,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1515824349, now seen corresponding path program 1 times [2022-12-13 15:10:49,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:10:49,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358291868] [2022-12-13 15:10:49,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:10:49,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:10:49,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:10:50,958 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-13 15:10:50,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:10:50,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358291868] [2022-12-13 15:10:50,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358291868] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:10:50,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:10:50,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 15:10:50,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286442781] [2022-12-13 15:10:50,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:10:50,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 15:10:50,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:10:50,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 15:10:50,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-12-13 15:10:52,142 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 451 out of 1022 [2022-12-13 15:10:52,144 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 152 transitions, 807 flow. Second operand has 9 states, 9 states have (on average 452.77777777777777) internal successors, (4075), 9 states have internal predecessors, (4075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:10:52,144 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:10:52,144 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 451 of 1022 [2022-12-13 15:10:52,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:10:58,115 INFO L130 PetriNetUnfolder]: 24186/43332 cut-off events. [2022-12-13 15:10:58,115 INFO L131 PetriNetUnfolder]: For 53444/61164 co-relation queries the response was YES. [2022-12-13 15:10:58,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114826 conditions, 43332 events. 24186/43332 cut-off events. For 53444/61164 co-relation queries the response was YES. Maximal size of possible extension queue 1040. Compared 381859 event pairs, 3293 based on Foata normal form. 561/38995 useless extension candidates. Maximal degree in co-relation 114802. Up to 8961 conditions per place. [2022-12-13 15:10:58,561 INFO L137 encePairwiseOnDemand]: 1009/1022 looper letters, 234 selfloop transitions, 68 changer transitions 0/361 dead transitions. [2022-12-13 15:10:58,561 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 361 transitions, 2732 flow [2022-12-13 15:10:58,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 15:10:58,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 15:10:58,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 5100 transitions. [2022-12-13 15:10:58,567 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4536559331079879 [2022-12-13 15:10:58,567 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 5100 transitions. [2022-12-13 15:10:58,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 5100 transitions. [2022-12-13 15:10:58,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:10:58,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 5100 transitions. [2022-12-13 15:10:58,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 463.6363636363636) internal successors, (5100), 11 states have internal predecessors, (5100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:10:58,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 1022.0) internal successors, (12264), 12 states have internal predecessors, (12264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:10:58,580 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 1022.0) internal successors, (12264), 12 states have internal predecessors, (12264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:10:58,580 INFO L175 Difference]: Start difference. First operand has 140 places, 152 transitions, 807 flow. Second operand 11 states and 5100 transitions. [2022-12-13 15:10:58,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 361 transitions, 2732 flow [2022-12-13 15:10:58,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 361 transitions, 2718 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-12-13 15:10:58,636 INFO L231 Difference]: Finished difference. Result has 148 places, 201 transitions, 1478 flow [2022-12-13 15:10:58,637 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1022, PETRI_DIFFERENCE_MINUEND_FLOW=789, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1478, PETRI_PLACES=148, PETRI_TRANSITIONS=201} [2022-12-13 15:10:58,637 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, 7 predicate places. [2022-12-13 15:10:58,637 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 201 transitions, 1478 flow [2022-12-13 15:10:58,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 452.77777777777777) internal successors, (4075), 9 states have internal predecessors, (4075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:10:58,638 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:10:58,638 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:10:58,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 15:10:58,638 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2022-12-13 15:10:58,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:10:58,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1274782609, now seen corresponding path program 2 times [2022-12-13 15:10:58,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:10:58,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574205121] [2022-12-13 15:10:58,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:10:58,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:10:58,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:10:59,584 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-13 15:10:59,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:10:59,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574205121] [2022-12-13 15:10:59,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574205121] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:10:59,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:10:59,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 15:10:59,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430926159] [2022-12-13 15:10:59,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:10:59,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 15:10:59,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:10:59,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 15:10:59,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-12-13 15:11:00,555 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 451 out of 1022 [2022-12-13 15:11:00,557 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 201 transitions, 1478 flow. Second operand has 9 states, 9 states have (on average 452.77777777777777) internal successors, (4075), 9 states have internal predecessors, (4075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:11:00,557 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:11:00,557 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 451 of 1022 [2022-12-13 15:11:00,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:11:08,411 INFO L130 PetriNetUnfolder]: 34218/62300 cut-off events. [2022-12-13 15:11:08,411 INFO L131 PetriNetUnfolder]: For 142603/152199 co-relation queries the response was YES. [2022-12-13 15:11:08,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180148 conditions, 62300 events. 34218/62300 cut-off events. For 142603/152199 co-relation queries the response was YES. Maximal size of possible extension queue 1711. Compared 593476 event pairs, 9303 based on Foata normal form. 737/56221 useless extension candidates. Maximal degree in co-relation 180120. Up to 28784 conditions per place. [2022-12-13 15:11:08,958 INFO L137 encePairwiseOnDemand]: 1010/1022 looper letters, 204 selfloop transitions, 112 changer transitions 0/375 dead transitions. [2022-12-13 15:11:08,959 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 375 transitions, 3445 flow [2022-12-13 15:11:08,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 15:11:08,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-13 15:11:08,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 4635 transitions. [2022-12-13 15:11:08,964 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4535225048923679 [2022-12-13 15:11:08,964 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 4635 transitions. [2022-12-13 15:11:08,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 4635 transitions. [2022-12-13 15:11:08,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:11:08,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 4635 transitions. [2022-12-13 15:11:08,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 463.5) internal successors, (4635), 10 states have internal predecessors, (4635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:11:08,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 1022.0) internal successors, (11242), 11 states have internal predecessors, (11242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:11:08,976 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 1022.0) internal successors, (11242), 11 states have internal predecessors, (11242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:11:08,976 INFO L175 Difference]: Start difference. First operand has 148 places, 201 transitions, 1478 flow. Second operand 10 states and 4635 transitions. [2022-12-13 15:11:08,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 375 transitions, 3445 flow [2022-12-13 15:11:09,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 375 transitions, 3429 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 15:11:09,289 INFO L231 Difference]: Finished difference. Result has 156 places, 272 transitions, 2739 flow [2022-12-13 15:11:09,289 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1022, PETRI_DIFFERENCE_MINUEND_FLOW=1462, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2739, PETRI_PLACES=156, PETRI_TRANSITIONS=272} [2022-12-13 15:11:09,289 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, 15 predicate places. [2022-12-13 15:11:09,290 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 272 transitions, 2739 flow [2022-12-13 15:11:09,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 452.77777777777777) internal successors, (4075), 9 states have internal predecessors, (4075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:11:09,290 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:11:09,290 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] [2022-12-13 15:11:09,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 15:11:09,290 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2022-12-13 15:11:09,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:11:09,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1045424194, now seen corresponding path program 1 times [2022-12-13 15:11:09,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:11:09,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248674654] [2022-12-13 15:11:09,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:11:09,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:11:09,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:11:09,580 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 15:11:09,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:11:09,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248674654] [2022-12-13 15:11:09,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248674654] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:11:09,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:11:09,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 15:11:09,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97237584] [2022-12-13 15:11:09,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:11:09,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 15:11:09,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:11:09,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 15:11:09,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 15:11:10,006 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 465 out of 1022 [2022-12-13 15:11:10,007 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 272 transitions, 2739 flow. Second operand has 6 states, 6 states have (on average 468.5) internal successors, (2811), 6 states have internal predecessors, (2811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:11:10,007 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:11:10,007 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 465 of 1022 [2022-12-13 15:11:10,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:11:19,092 INFO L130 PetriNetUnfolder]: 36082/63996 cut-off events. [2022-12-13 15:11:19,092 INFO L131 PetriNetUnfolder]: For 229111/239334 co-relation queries the response was YES. [2022-12-13 15:11:19,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201445 conditions, 63996 events. 36082/63996 cut-off events. For 229111/239334 co-relation queries the response was YES. Maximal size of possible extension queue 1926. Compared 601560 event pairs, 12972 based on Foata normal form. 219/56676 useless extension candidates. Maximal degree in co-relation 201414. Up to 41510 conditions per place. [2022-12-13 15:11:19,711 INFO L137 encePairwiseOnDemand]: 1015/1022 looper letters, 234 selfloop transitions, 25 changer transitions 0/326 dead transitions. [2022-12-13 15:11:19,711 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 326 transitions, 3618 flow [2022-12-13 15:11:19,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 15:11:19,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 15:11:19,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2866 transitions. [2022-12-13 15:11:19,715 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4673842139595564 [2022-12-13 15:11:19,715 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2866 transitions. [2022-12-13 15:11:19,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2866 transitions. [2022-12-13 15:11:19,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:11:19,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2866 transitions. [2022-12-13 15:11:19,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 477.6666666666667) internal successors, (2866), 6 states have internal predecessors, (2866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:11:19,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1022.0) internal successors, (7154), 7 states have internal predecessors, (7154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:11:19,723 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1022.0) internal successors, (7154), 7 states have internal predecessors, (7154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:11:19,723 INFO L175 Difference]: Start difference. First operand has 156 places, 272 transitions, 2739 flow. Second operand 6 states and 2866 transitions. [2022-12-13 15:11:19,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 326 transitions, 3618 flow [2022-12-13 15:11:20,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 326 transitions, 3494 flow, removed 54 selfloop flow, removed 4 redundant places. [2022-12-13 15:11:20,545 INFO L231 Difference]: Finished difference. Result has 162 places, 296 transitions, 2999 flow [2022-12-13 15:11:20,545 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1022, PETRI_DIFFERENCE_MINUEND_FLOW=2623, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2999, PETRI_PLACES=162, PETRI_TRANSITIONS=296} [2022-12-13 15:11:20,545 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, 21 predicate places. [2022-12-13 15:11:20,545 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 296 transitions, 2999 flow [2022-12-13 15:11:20,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 468.5) internal successors, (2811), 6 states have internal predecessors, (2811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:11:20,545 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:11:20,546 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:11:20,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 15:11:20,546 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err9ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2022-12-13 15:11:20,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:11:20,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1325938495, now seen corresponding path program 1 times [2022-12-13 15:11:20,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:11:20,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548255175] [2022-12-13 15:11:20,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:11:20,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:11:20,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:11:20,885 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-13 15:11:20,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:11:20,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548255175] [2022-12-13 15:11:20,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548255175] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:11:20,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:11:20,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 15:11:20,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655921449] [2022-12-13 15:11:20,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:11:20,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 15:11:20,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:11:20,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 15:11:20,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 15:11:21,290 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 458 out of 1022 [2022-12-13 15:11:21,292 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 296 transitions, 2999 flow. Second operand has 6 states, 6 states have (on average 460.8333333333333) internal successors, (2765), 6 states have internal predecessors, (2765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:11:21,292 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:11:21,292 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 458 of 1022 [2022-12-13 15:11:21,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:11:35,228 INFO L130 PetriNetUnfolder]: 62369/96039 cut-off events. [2022-12-13 15:11:35,228 INFO L131 PetriNetUnfolder]: For 347283/357014 co-relation queries the response was YES. [2022-12-13 15:11:35,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 317737 conditions, 96039 events. 62369/96039 cut-off events. For 347283/357014 co-relation queries the response was YES. Maximal size of possible extension queue 2349. Compared 790553 event pairs, 14305 based on Foata normal form. 756/85549 useless extension candidates. Maximal degree in co-relation 317702. Up to 53437 conditions per place. [2022-12-13 15:11:36,398 INFO L137 encePairwiseOnDemand]: 1008/1022 looper letters, 272 selfloop transitions, 145 changer transitions 0/478 dead transitions. [2022-12-13 15:11:36,398 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 478 transitions, 5761 flow [2022-12-13 15:11:36,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 15:11:36,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 15:11:36,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2858 transitions. [2022-12-13 15:11:36,404 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4660795825179387 [2022-12-13 15:11:36,404 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2858 transitions. [2022-12-13 15:11:36,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2858 transitions. [2022-12-13 15:11:36,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:11:36,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2858 transitions. [2022-12-13 15:11:36,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 476.3333333333333) internal successors, (2858), 6 states have internal predecessors, (2858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:11:36,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1022.0) internal successors, (7154), 7 states have internal predecessors, (7154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:11:36,414 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1022.0) internal successors, (7154), 7 states have internal predecessors, (7154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:11:36,414 INFO L175 Difference]: Start difference. First operand has 162 places, 296 transitions, 2999 flow. Second operand 6 states and 2858 transitions. [2022-12-13 15:11:36,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 478 transitions, 5761 flow [2022-12-13 15:11:37,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 478 transitions, 5721 flow, removed 20 selfloop flow, removed 0 redundant places. [2022-12-13 15:11:37,702 INFO L231 Difference]: Finished difference. Result has 172 places, 430 transitions, 5427 flow [2022-12-13 15:11:37,702 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1022, PETRI_DIFFERENCE_MINUEND_FLOW=2959, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5427, PETRI_PLACES=172, PETRI_TRANSITIONS=430} [2022-12-13 15:11:37,703 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, 31 predicate places. [2022-12-13 15:11:37,703 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 430 transitions, 5427 flow [2022-12-13 15:11:37,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 460.8333333333333) internal successors, (2765), 6 states have internal predecessors, (2765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:11:37,703 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:11:37,703 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:11:37,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 15:11:37,704 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2022-12-13 15:11:37,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:11:37,704 INFO L85 PathProgramCache]: Analyzing trace with hash 841048296, now seen corresponding path program 3 times [2022-12-13 15:11:37,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:11:37,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626582481] [2022-12-13 15:11:37,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:11:37,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:11:37,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:11:37,899 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 15:11:37,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:11:37,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626582481] [2022-12-13 15:11:37,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626582481] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:11:37,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634841505] [2022-12-13 15:11:37,900 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 15:11:37,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:11:37,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1af719-7e7b-4e06-8657-f777cb261b95/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:11:37,901 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1af719-7e7b-4e06-8657-f777cb261b95/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:11:37,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1af719-7e7b-4e06-8657-f777cb261b95/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 15:11:38,123 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-12-13 15:11:38,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:11:38,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 67 conjunts are in the unsatisfiable core [2022-12-13 15:11:38,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:11:38,194 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-12-13 15:11:38,194 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 3 case distinctions, treesize of input 15 treesize of output 42 [2022-12-13 15:11:38,241 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-13 15:11:38,241 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-13 15:11:38,287 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-12-13 15:11:38,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 15:11:38,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 15:11:38,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2022-12-13 15:11:38,539 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 42 [2022-12-13 15:11:38,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 57 [2022-12-13 15:11:38,713 INFO L321 Elim1Store]: treesize reduction 700, result has 6.4 percent of original size [2022-12-13 15:11:38,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 93 treesize of output 116 [2022-12-13 15:11:38,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 94 [2022-12-13 15:11:38,812 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 15:11:38,812 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:11:38,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634841505] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:11:38,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 15:11:38,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [7] total 17 [2022-12-13 15:11:38,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484321203] [2022-12-13 15:11:38,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:11:38,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 15:11:38,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:11:38,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 15:11:38,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2022-12-13 15:11:40,539 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 445 out of 1022 [2022-12-13 15:11:40,541 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 430 transitions, 5427 flow. Second operand has 12 states, 12 states have (on average 446.6666666666667) internal successors, (5360), 12 states have internal predecessors, (5360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:11:40,542 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:11:40,542 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 445 of 1022 [2022-12-13 15:11:40,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:11:55,810 INFO L130 PetriNetUnfolder]: 61862/96168 cut-off events. [2022-12-13 15:11:55,810 INFO L131 PetriNetUnfolder]: For 430562/441872 co-relation queries the response was YES. [2022-12-13 15:11:56,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 347316 conditions, 96168 events. 61862/96168 cut-off events. For 430562/441872 co-relation queries the response was YES. Maximal size of possible extension queue 2409. Compared 802844 event pairs, 13850 based on Foata normal form. 367/85962 useless extension candidates. Maximal degree in co-relation 347276. Up to 35373 conditions per place. [2022-12-13 15:11:57,036 INFO L137 encePairwiseOnDemand]: 1010/1022 looper letters, 522 selfloop transitions, 38 changer transitions 0/622 dead transitions. [2022-12-13 15:11:57,036 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 622 transitions, 8605 flow [2022-12-13 15:11:57,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 15:11:57,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 15:11:57,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 5024 transitions. [2022-12-13 15:11:57,048 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44689557018324144 [2022-12-13 15:11:57,048 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 5024 transitions. [2022-12-13 15:11:57,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 5024 transitions. [2022-12-13 15:11:57,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:11:57,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 5024 transitions. [2022-12-13 15:11:57,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 456.72727272727275) internal successors, (5024), 11 states have internal predecessors, (5024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:11:57,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 1022.0) internal successors, (12264), 12 states have internal predecessors, (12264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:11:57,060 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 1022.0) internal successors, (12264), 12 states have internal predecessors, (12264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:11:57,060 INFO L175 Difference]: Start difference. First operand has 172 places, 430 transitions, 5427 flow. Second operand 11 states and 5024 transitions. [2022-12-13 15:11:57,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 622 transitions, 8605 flow [2022-12-13 15:12:03,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 622 transitions, 8253 flow, removed 176 selfloop flow, removed 0 redundant places. [2022-12-13 15:12:03,789 INFO L231 Difference]: Finished difference. Result has 187 places, 437 transitions, 5375 flow [2022-12-13 15:12:03,789 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1022, PETRI_DIFFERENCE_MINUEND_FLOW=5211, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5375, PETRI_PLACES=187, PETRI_TRANSITIONS=437} [2022-12-13 15:12:03,790 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, 46 predicate places. [2022-12-13 15:12:03,790 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 437 transitions, 5375 flow [2022-12-13 15:12:03,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 446.6666666666667) internal successors, (5360), 12 states have internal predecessors, (5360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:12:03,790 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:12:03,791 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:12:03,796 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1af719-7e7b-4e06-8657-f777cb261b95/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 15:12:03,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1af719-7e7b-4e06-8657-f777cb261b95/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-13 15:12:03,992 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2022-12-13 15:12:03,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:12:03,993 INFO L85 PathProgramCache]: Analyzing trace with hash -2124715590, now seen corresponding path program 1 times [2022-12-13 15:12:03,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:12:03,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486977994] [2022-12-13 15:12:03,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:12:03,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:12:04,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:12:04,166 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 15:12:04,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:12:04,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486977994] [2022-12-13 15:12:04,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486977994] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:12:04,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667285387] [2022-12-13 15:12:04,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:12:04,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:12:04,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1af719-7e7b-4e06-8657-f777cb261b95/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:12:04,167 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1af719-7e7b-4e06-8657-f777cb261b95/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:12:04,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1af719-7e7b-4e06-8657-f777cb261b95/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 15:12:04,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:12:04,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 15:12:04,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:12:04,405 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 15:12:04,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:12:04,452 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 15:12:04,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667285387] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 15:12:04,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-13 15:12:04,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2022-12-13 15:12:04,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563681998] [2022-12-13 15:12:04,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:12:04,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 15:12:04,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:12:04,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 15:12:04,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-12-13 15:12:04,616 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 462 out of 1022 [2022-12-13 15:12:04,617 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 437 transitions, 5375 flow. Second operand has 6 states, 6 states have (on average 465.3333333333333) internal successors, (2792), 6 states have internal predecessors, (2792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:12:04,617 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:12:04,617 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 462 of 1022 [2022-12-13 15:12:04,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:12:16,258 INFO L130 PetriNetUnfolder]: 39844/69048 cut-off events. [2022-12-13 15:12:16,259 INFO L131 PetriNetUnfolder]: For 370346/381136 co-relation queries the response was YES. [2022-12-13 15:12:16,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257429 conditions, 69048 events. 39844/69048 cut-off events. For 370346/381136 co-relation queries the response was YES. Maximal size of possible extension queue 1742. Compared 626355 event pairs, 9669 based on Foata normal form. 578/60813 useless extension candidates. Maximal degree in co-relation 257383. Up to 43330 conditions per place. [2022-12-13 15:12:17,118 INFO L137 encePairwiseOnDemand]: 1011/1022 looper letters, 342 selfloop transitions, 32 changer transitions 15/472 dead transitions. [2022-12-13 15:12:17,118 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 472 transitions, 6315 flow [2022-12-13 15:12:17,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 15:12:17,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 15:12:17,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2848 transitions. [2022-12-13 15:12:17,122 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4644487932159165 [2022-12-13 15:12:17,122 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2848 transitions. [2022-12-13 15:12:17,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2848 transitions. [2022-12-13 15:12:17,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:12:17,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2848 transitions. [2022-12-13 15:12:17,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 474.6666666666667) internal successors, (2848), 6 states have internal predecessors, (2848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:12:17,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1022.0) internal successors, (7154), 7 states have internal predecessors, (7154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:12:17,128 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1022.0) internal successors, (7154), 7 states have internal predecessors, (7154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:12:17,128 INFO L175 Difference]: Start difference. First operand has 187 places, 437 transitions, 5375 flow. Second operand 6 states and 2848 transitions. [2022-12-13 15:12:17,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 472 transitions, 6315 flow [2022-12-13 15:12:18,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 472 transitions, 6271 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-12-13 15:12:18,104 INFO L231 Difference]: Finished difference. Result has 189 places, 421 transitions, 5259 flow [2022-12-13 15:12:18,105 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1022, PETRI_DIFFERENCE_MINUEND_FLOW=5219, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5259, PETRI_PLACES=189, PETRI_TRANSITIONS=421} [2022-12-13 15:12:18,105 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, 48 predicate places. [2022-12-13 15:12:18,105 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 421 transitions, 5259 flow [2022-12-13 15:12:18,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 465.3333333333333) internal successors, (2792), 6 states have internal predecessors, (2792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:12:18,106 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:12:18,106 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:12:18,111 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1af719-7e7b-4e06-8657-f777cb261b95/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 15:12:18,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1af719-7e7b-4e06-8657-f777cb261b95/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-13 15:12:18,307 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err9ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2022-12-13 15:12:18,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:12:18,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1435805318, now seen corresponding path program 1 times [2022-12-13 15:12:18,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:12:18,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238118667] [2022-12-13 15:12:18,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:12:18,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:12:18,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:12:19,578 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-13 15:12:19,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:12:19,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238118667] [2022-12-13 15:12:19,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238118667] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:12:19,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:12:19,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 15:12:19,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378596336] [2022-12-13 15:12:19,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:12:19,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 15:12:19,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:12:19,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 15:12:19,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-12-13 15:12:20,205 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 453 out of 1022 [2022-12-13 15:12:20,207 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 421 transitions, 5259 flow. Second operand has 8 states, 8 states have (on average 455.25) internal successors, (3642), 8 states have internal predecessors, (3642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:12:20,207 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:12:20,207 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 453 of 1022 [2022-12-13 15:12:20,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:12:34,758 INFO L130 PetriNetUnfolder]: 45736/77985 cut-off events. [2022-12-13 15:12:34,759 INFO L131 PetriNetUnfolder]: For 469107/488639 co-relation queries the response was YES. [2022-12-13 15:12:35,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296594 conditions, 77985 events. 45736/77985 cut-off events. For 469107/488639 co-relation queries the response was YES. Maximal size of possible extension queue 2247. Compared 713787 event pairs, 6975 based on Foata normal form. 1085/70050 useless extension candidates. Maximal degree in co-relation 296546. Up to 19843 conditions per place. [2022-12-13 15:12:35,921 INFO L137 encePairwiseOnDemand]: 1010/1022 looper letters, 516 selfloop transitions, 96 changer transitions 0/688 dead transitions. [2022-12-13 15:12:35,921 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 688 transitions, 9540 flow [2022-12-13 15:12:35,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 15:12:35,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-13 15:12:35,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 4669 transitions. [2022-12-13 15:12:35,928 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45684931506849313 [2022-12-13 15:12:35,928 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 4669 transitions. [2022-12-13 15:12:35,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 4669 transitions. [2022-12-13 15:12:35,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:12:35,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 4669 transitions. [2022-12-13 15:12:35,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 466.9) internal successors, (4669), 10 states have internal predecessors, (4669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:12:35,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 1022.0) internal successors, (11242), 11 states have internal predecessors, (11242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:12:35,942 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 1022.0) internal successors, (11242), 11 states have internal predecessors, (11242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:12:35,943 INFO L175 Difference]: Start difference. First operand has 189 places, 421 transitions, 5259 flow. Second operand 10 states and 4669 transitions. [2022-12-13 15:12:35,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 688 transitions, 9540 flow [2022-12-13 15:12:37,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 688 transitions, 9475 flow, removed 15 selfloop flow, removed 5 redundant places. [2022-12-13 15:12:37,833 INFO L231 Difference]: Finished difference. Result has 189 places, 434 transitions, 5666 flow [2022-12-13 15:12:37,833 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1022, PETRI_DIFFERENCE_MINUEND_FLOW=5209, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5666, PETRI_PLACES=189, PETRI_TRANSITIONS=434} [2022-12-13 15:12:37,833 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, 48 predicate places. [2022-12-13 15:12:37,833 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 434 transitions, 5666 flow [2022-12-13 15:12:37,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 455.25) internal successors, (3642), 8 states have internal predecessors, (3642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:12:37,834 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:12:37,834 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:12:37,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 15:12:37,834 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err9ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2022-12-13 15:12:37,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:12:37,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1386334042, now seen corresponding path program 2 times [2022-12-13 15:12:37,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:12:37,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829793947] [2022-12-13 15:12:37,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:12:37,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:12:37,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:12:38,735 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-13 15:12:38,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:12:38,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829793947] [2022-12-13 15:12:38,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829793947] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:12:38,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:12:38,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 15:12:38,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645272055] [2022-12-13 15:12:38,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:12:38,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 15:12:38,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:12:38,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 15:12:38,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-13 15:12:39,536 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 453 out of 1022 [2022-12-13 15:12:39,538 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 434 transitions, 5666 flow. Second operand has 8 states, 8 states have (on average 455.25) internal successors, (3642), 8 states have internal predecessors, (3642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:12:39,538 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:12:39,538 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 453 of 1022 [2022-12-13 15:12:39,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:12:52,733 INFO L130 PetriNetUnfolder]: 45771/79322 cut-off events. [2022-12-13 15:12:52,733 INFO L131 PetriNetUnfolder]: For 456015/469435 co-relation queries the response was YES. [2022-12-13 15:12:53,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 300190 conditions, 79322 events. 45771/79322 cut-off events. For 456015/469435 co-relation queries the response was YES. Maximal size of possible extension queue 2342. Compared 741796 event pairs, 6165 based on Foata normal form. 910/71655 useless extension candidates. Maximal degree in co-relation 300143. Up to 40356 conditions per place. [2022-12-13 15:12:53,793 INFO L137 encePairwiseOnDemand]: 1011/1022 looper letters, 300 selfloop transitions, 182 changer transitions 0/558 dead transitions. [2022-12-13 15:12:53,793 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 558 transitions, 7629 flow [2022-12-13 15:12:53,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 15:12:53,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 15:12:53,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4197 transitions. [2022-12-13 15:12:53,799 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4562948467058056 [2022-12-13 15:12:53,799 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 4197 transitions. [2022-12-13 15:12:53,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 4197 transitions. [2022-12-13 15:12:53,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:12:53,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 4197 transitions. [2022-12-13 15:12:53,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 466.3333333333333) internal successors, (4197), 9 states have internal predecessors, (4197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:12:53,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1022.0) internal successors, (10220), 10 states have internal predecessors, (10220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:12:53,813 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1022.0) internal successors, (10220), 10 states have internal predecessors, (10220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:12:53,813 INFO L175 Difference]: Start difference. First operand has 189 places, 434 transitions, 5666 flow. Second operand 9 states and 4197 transitions. [2022-12-13 15:12:53,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 558 transitions, 7629 flow [2022-12-13 15:12:55,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 558 transitions, 7618 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 15:12:55,392 INFO L231 Difference]: Finished difference. Result has 196 places, 440 transitions, 6227 flow [2022-12-13 15:12:55,393 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1022, PETRI_DIFFERENCE_MINUEND_FLOW=5655, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6227, PETRI_PLACES=196, PETRI_TRANSITIONS=440} [2022-12-13 15:12:55,393 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, 55 predicate places. [2022-12-13 15:12:55,393 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 440 transitions, 6227 flow [2022-12-13 15:12:55,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 455.25) internal successors, (3642), 8 states have internal predecessors, (3642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:12:55,393 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:12:55,393 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] [2022-12-13 15:12:55,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 15:12:55,394 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2022-12-13 15:12:55,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:12:55,394 INFO L85 PathProgramCache]: Analyzing trace with hash -210374028, now seen corresponding path program 1 times [2022-12-13 15:12:55,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:12:55,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165302029] [2022-12-13 15:12:55,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:12:55,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:12:55,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:12:55,659 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 15:12:55,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:12:55,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165302029] [2022-12-13 15:12:55,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165302029] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:12:55,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:12:55,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 15:12:55,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268019208] [2022-12-13 15:12:55,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:12:55,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 15:12:55,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:12:55,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 15:12:55,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 15:12:56,156 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 465 out of 1022 [2022-12-13 15:12:56,158 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 440 transitions, 6227 flow. Second operand has 6 states, 6 states have (on average 468.8333333333333) internal successors, (2813), 6 states have internal predecessors, (2813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:12:56,158 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:12:56,158 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 465 of 1022 [2022-12-13 15:12:56,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:13:10,216 INFO L130 PetriNetUnfolder]: 44501/76534 cut-off events. [2022-12-13 15:13:10,216 INFO L131 PetriNetUnfolder]: For 475098/489355 co-relation queries the response was YES. [2022-12-13 15:13:10,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 295256 conditions, 76534 events. 44501/76534 cut-off events. For 475098/489355 co-relation queries the response was YES. Maximal size of possible extension queue 2280. Compared 710995 event pairs, 15295 based on Foata normal form. 365/68262 useless extension candidates. Maximal degree in co-relation 295207. Up to 53953 conditions per place. [2022-12-13 15:13:11,215 INFO L137 encePairwiseOnDemand]: 1017/1022 looper letters, 345 selfloop transitions, 0 changer transitions 32/455 dead transitions. [2022-12-13 15:13:11,215 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 455 transitions, 7003 flow [2022-12-13 15:13:11,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 15:13:11,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 15:13:11,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2846 transitions. [2022-12-13 15:13:11,219 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46412263535551207 [2022-12-13 15:13:11,219 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2846 transitions. [2022-12-13 15:13:11,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2846 transitions. [2022-12-13 15:13:11,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:13:11,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2846 transitions. [2022-12-13 15:13:11,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 474.3333333333333) internal successors, (2846), 6 states have internal predecessors, (2846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:13:11,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1022.0) internal successors, (7154), 7 states have internal predecessors, (7154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:13:11,226 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1022.0) internal successors, (7154), 7 states have internal predecessors, (7154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:13:11,226 INFO L175 Difference]: Start difference. First operand has 196 places, 440 transitions, 6227 flow. Second operand 6 states and 2846 transitions. [2022-12-13 15:13:11,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 455 transitions, 7003 flow [2022-12-13 15:13:13,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 455 transitions, 6700 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-13 15:13:13,332 INFO L231 Difference]: Finished difference. Result has 194 places, 423 transitions, 5808 flow [2022-12-13 15:13:13,332 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1022, PETRI_DIFFERENCE_MINUEND_FLOW=5922, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5808, PETRI_PLACES=194, PETRI_TRANSITIONS=423} [2022-12-13 15:13:13,332 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, 53 predicate places. [2022-12-13 15:13:13,333 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 423 transitions, 5808 flow [2022-12-13 15:13:13,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 468.8333333333333) internal successors, (2813), 6 states have internal predecessors, (2813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:13:13,333 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:13:13,333 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:13:13,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 15:13:13,333 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err9ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2022-12-13 15:13:13,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:13:13,333 INFO L85 PathProgramCache]: Analyzing trace with hash -218386993, now seen corresponding path program 3 times [2022-12-13 15:13:13,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:13:13,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193734547] [2022-12-13 15:13:13,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:13:13,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:13:13,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:13:13,467 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 15:13:13,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:13:13,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193734547] [2022-12-13 15:13:13,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193734547] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:13:13,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931293810] [2022-12-13 15:13:13,468 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 15:13:13,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:13:13,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1af719-7e7b-4e06-8657-f777cb261b95/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:13:13,469 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1af719-7e7b-4e06-8657-f777cb261b95/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:13:13,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1af719-7e7b-4e06-8657-f777cb261b95/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 15:13:13,658 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-12-13 15:13:13,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:13:13,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 80 conjunts are in the unsatisfiable core [2022-12-13 15:13:13,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:13:13,690 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-12-13 15:13:13,691 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 3 case distinctions, treesize of input 15 treesize of output 42 [2022-12-13 15:13:13,709 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-13 15:13:13,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-13 15:13:13,733 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-12-13 15:13:13,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 15:13:13,822 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 15:13:13,840 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2022-12-13 15:13:13,866 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 15:13:13,866 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2022-12-13 15:13:13,895 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 15:13:13,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2022-12-13 15:13:13,984 INFO L321 Elim1Store]: treesize reduction 700, result has 6.4 percent of original size [2022-12-13 15:13:13,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 162 treesize of output 160 [2022-12-13 15:13:13,992 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 148 treesize of output 133 [2022-12-13 15:13:14,053 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 15:13:14,053 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:13:14,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931293810] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:13:14,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 15:13:14,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 16 [2022-12-13 15:13:14,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496140786] [2022-12-13 15:13:14,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:13:14,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 15:13:14,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:13:14,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 15:13:14,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-12-13 15:13:16,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:13:18,135 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:13:20,486 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:13:22,896 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:13:25,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:13:26,805 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 438 out of 1022 [2022-12-13 15:13:26,807 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 423 transitions, 5808 flow. Second operand has 11 states, 11 states have (on average 440.0) internal successors, (4840), 11 states have internal predecessors, (4840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:13:26,808 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:13:26,808 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 438 of 1022 [2022-12-13 15:13:26,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:13:31,313 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:13:34,563 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 15:13:51,869 INFO L130 PetriNetUnfolder]: 84353/125934 cut-off events. [2022-12-13 15:13:51,869 INFO L131 PetriNetUnfolder]: For 520059/529709 co-relation queries the response was YES. [2022-12-13 15:13:53,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 453337 conditions, 125934 events. 84353/125934 cut-off events. For 520059/529709 co-relation queries the response was YES. Maximal size of possible extension queue 3778. Compared 1036890 event pairs, 15791 based on Foata normal form. 2448/114536 useless extension candidates. Maximal degree in co-relation 453288. Up to 44149 conditions per place. [2022-12-13 15:13:53,587 INFO L137 encePairwiseOnDemand]: 1010/1022 looper letters, 399 selfloop transitions, 88 changer transitions 2/545 dead transitions. [2022-12-13 15:13:53,587 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 545 transitions, 7812 flow [2022-12-13 15:13:53,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 15:13:53,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 15:13:53,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 4935 transitions. [2022-12-13 15:13:53,592 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43897882938978827 [2022-12-13 15:13:53,592 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 4935 transitions. [2022-12-13 15:13:53,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 4935 transitions. [2022-12-13 15:13:53,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:13:53,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 4935 transitions. [2022-12-13 15:13:53,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 448.6363636363636) internal successors, (4935), 11 states have internal predecessors, (4935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:13:53,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 1022.0) internal successors, (12264), 12 states have internal predecessors, (12264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:13:53,604 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 1022.0) internal successors, (12264), 12 states have internal predecessors, (12264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:13:53,604 INFO L175 Difference]: Start difference. First operand has 194 places, 423 transitions, 5808 flow. Second operand 11 states and 4935 transitions. [2022-12-13 15:13:53,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 545 transitions, 7812 flow [2022-12-13 15:13:58,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 545 transitions, 7581 flow, removed 38 selfloop flow, removed 7 redundant places. [2022-12-13 15:13:58,261 INFO L231 Difference]: Finished difference. Result has 182 places, 437 transitions, 6121 flow [2022-12-13 15:13:58,262 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1022, PETRI_DIFFERENCE_MINUEND_FLOW=5590, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6121, PETRI_PLACES=182, PETRI_TRANSITIONS=437} [2022-12-13 15:13:58,262 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, 41 predicate places. [2022-12-13 15:13:58,262 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 437 transitions, 6121 flow [2022-12-13 15:13:58,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 440.0) internal successors, (4840), 11 states have internal predecessors, (4840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:13:58,263 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:13:58,263 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:13:58,267 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1af719-7e7b-4e06-8657-f777cb261b95/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 15:13:58,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1af719-7e7b-4e06-8657-f777cb261b95/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:13:58,464 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2022-12-13 15:13:58,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:13:58,465 INFO L85 PathProgramCache]: Analyzing trace with hash 2096989398, now seen corresponding path program 1 times [2022-12-13 15:13:58,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:13:58,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536279223] [2022-12-13 15:13:58,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:13:58,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:13:58,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:13:58,692 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 15:13:58,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:13:58,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536279223] [2022-12-13 15:13:58,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536279223] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:13:58,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942204813] [2022-12-13 15:13:58,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:13:58,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:13:58,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1af719-7e7b-4e06-8657-f777cb261b95/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:13:58,693 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1af719-7e7b-4e06-8657-f777cb261b95/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:13:58,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1af719-7e7b-4e06-8657-f777cb261b95/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 15:13:58,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:13:58,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 690 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 15:13:58,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:13:59,001 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 15:13:59,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:13:59,061 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 15:13:59,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942204813] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:13:59,061 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:13:59,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2022-12-13 15:13:59,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013284435] [2022-12-13 15:13:59,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:13:59,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 15:13:59,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:13:59,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 15:13:59,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2022-12-13 15:14:00,088 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 462 out of 1022 [2022-12-13 15:14:00,091 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 437 transitions, 6121 flow. Second operand has 17 states, 17 states have (on average 464.4117647058824) internal successors, (7895), 17 states have internal predecessors, (7895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:14:00,091 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:14:00,091 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 462 of 1022 [2022-12-13 15:14:00,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:14:33,088 INFO L130 PetriNetUnfolder]: 109583/190581 cut-off events. [2022-12-13 15:14:33,088 INFO L131 PetriNetUnfolder]: For 1331696/1364261 co-relation queries the response was YES. [2022-12-13 15:14:35,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 760030 conditions, 190581 events. 109583/190581 cut-off events. For 1331696/1364261 co-relation queries the response was YES. Maximal size of possible extension queue 6718. Compared 2023339 event pairs, 20470 based on Foata normal form. 1071/171763 useless extension candidates. Maximal degree in co-relation 759984. Up to 54742 conditions per place. [2022-12-13 15:14:36,004 INFO L137 encePairwiseOnDemand]: 1010/1022 looper letters, 985 selfloop transitions, 76 changer transitions 0/1134 dead transitions. [2022-12-13 15:14:36,004 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 1134 transitions, 18551 flow [2022-12-13 15:14:36,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 15:14:36,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-13 15:14:36,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 6642 transitions. [2022-12-13 15:14:36,010 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4642158233156276 [2022-12-13 15:14:36,010 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 6642 transitions. [2022-12-13 15:14:36,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 6642 transitions. [2022-12-13 15:14:36,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:14:36,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 6642 transitions. [2022-12-13 15:14:36,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 474.42857142857144) internal successors, (6642), 14 states have internal predecessors, (6642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:14:36,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 1022.0) internal successors, (15330), 15 states have internal predecessors, (15330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:14:36,024 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 1022.0) internal successors, (15330), 15 states have internal predecessors, (15330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:14:36,025 INFO L175 Difference]: Start difference. First operand has 182 places, 437 transitions, 6121 flow. Second operand 14 states and 6642 transitions. [2022-12-13 15:14:36,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 1134 transitions, 18551 flow [2022-12-13 15:14:58,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 1134 transitions, 18280 flow, removed 60 selfloop flow, removed 9 redundant places. [2022-12-13 15:14:58,794 INFO L231 Difference]: Finished difference. Result has 190 places, 504 transitions, 7549 flow [2022-12-13 15:14:58,795 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1022, PETRI_DIFFERENCE_MINUEND_FLOW=6012, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=7549, PETRI_PLACES=190, PETRI_TRANSITIONS=504} [2022-12-13 15:14:58,795 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, 49 predicate places. [2022-12-13 15:14:58,795 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 504 transitions, 7549 flow [2022-12-13 15:14:58,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 464.4117647058824) internal successors, (7895), 17 states have internal predecessors, (7895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:14:58,796 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:14:58,796 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:14:58,800 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1af719-7e7b-4e06-8657-f777cb261b95/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 15:14:58,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1af719-7e7b-4e06-8657-f777cb261b95/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-12-13 15:14:58,997 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2022-12-13 15:14:58,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:14:58,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1955652518, now seen corresponding path program 2 times [2022-12-13 15:14:58,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:14:58,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023575214] [2022-12-13 15:14:58,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:14:58,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:14:59,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:15:00,329 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 15:15:00,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:15:00,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023575214] [2022-12-13 15:15:00,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023575214] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:15:00,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541744837] [2022-12-13 15:15:00,330 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 15:15:00,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:15:00,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1af719-7e7b-4e06-8657-f777cb261b95/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:15:00,331 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1af719-7e7b-4e06-8657-f777cb261b95/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:15:00,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1af719-7e7b-4e06-8657-f777cb261b95/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 15:15:00,561 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 15:15:00,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:15:00,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 61 conjunts are in the unsatisfiable core [2022-12-13 15:15:00,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:15:00,594 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-12-13 15:15:00,595 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 3 case distinctions, treesize of input 15 treesize of output 42 [2022-12-13 15:15:00,610 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-13 15:15:00,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-13 15:15:00,637 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-12-13 15:15:00,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 15:15:00,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 15:15:00,785 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2022-12-13 15:15:00,823 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 15:15:00,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2022-12-13 15:15:00,871 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 15:15:00,871 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2022-12-13 15:15:00,976 INFO L321 Elim1Store]: treesize reduction 700, result has 6.4 percent of original size [2022-12-13 15:15:00,976 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 93 treesize of output 116 [2022-12-13 15:15:00,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 94 [2022-12-13 15:15:01,014 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-13 15:15:01,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:15:02,835 INFO L321 Elim1Store]: treesize reduction 740, result has 12.2 percent of original size [2022-12-13 15:15:02,836 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 1 new quantified variables, introduced 8 case distinctions, treesize of input 85 treesize of output 121 [2022-12-13 15:15:02,850 INFO L321 Elim1Store]: treesize reduction 216, result has 0.5 percent of original size [2022-12-13 15:15:02,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 256 treesize of output 168 [2022-12-13 15:15:02,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 92 [2022-12-13 15:15:02,861 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 39 [2022-12-13 15:15:02,907 INFO L321 Elim1Store]: treesize reduction 842, result has 0.1 percent of original size [2022-12-13 15:15:02,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 8 case distinctions, treesize of input 84 treesize of output 1 [2022-12-13 15:15:02,932 INFO L321 Elim1Store]: treesize reduction 842, result has 0.1 percent of original size [2022-12-13 15:15:02,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 8 case distinctions, treesize of input 85 treesize of output 1 [2022-12-13 15:15:02,960 INFO L321 Elim1Store]: treesize reduction 842, result has 0.1 percent of original size [2022-12-13 15:15:02,961 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 8 case distinctions, treesize of input 85 treesize of output 1 [2022-12-13 15:15:03,203 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 1 refuted. 1 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-13 15:15:03,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541744837] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:15:03,203 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:15:03,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 25 [2022-12-13 15:15:03,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139510392] [2022-12-13 15:15:03,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:15:03,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-13 15:15:03,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:15:03,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-13 15:15:03,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=561, Unknown=21, NotChecked=0, Total=702 [2022-12-13 15:15:18,039 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 354 out of 1022 [2022-12-13 15:15:18,043 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 504 transitions, 7549 flow. Second operand has 27 states, 27 states have (on average 357.44444444444446) internal successors, (9651), 27 states have internal predecessors, (9651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:15:18,043 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:15:18,043 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 354 of 1022 [2022-12-13 15:15:18,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:17:11,898 INFO L130 PetriNetUnfolder]: 501659/664366 cut-off events. [2022-12-13 15:17:11,898 INFO L131 PetriNetUnfolder]: For 2089842/2089842 co-relation queries the response was YES. [2022-12-13 15:17:19,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2249532 conditions, 664366 events. 501659/664366 cut-off events. For 2089842/2089842 co-relation queries the response was YES. Maximal size of possible extension queue 21397. Compared 5224937 event pairs, 67456 based on Foata normal form. 300/597337 useless extension candidates. Maximal degree in co-relation 2249482. Up to 423054 conditions per place. [2022-12-13 15:17:21,516 INFO L137 encePairwiseOnDemand]: 1008/1022 looper letters, 864 selfloop transitions, 169 changer transitions 15/1058 dead transitions. [2022-12-13 15:17:21,516 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 1058 transitions, 14371 flow [2022-12-13 15:17:21,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-13 15:17:21,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-12-13 15:17:21,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 7822 transitions. [2022-12-13 15:17:21,524 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.36445811201192807 [2022-12-13 15:17:21,524 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 7822 transitions. [2022-12-13 15:17:21,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 7822 transitions. [2022-12-13 15:17:21,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:17:21,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 7822 transitions. [2022-12-13 15:17:21,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 372.4761904761905) internal successors, (7822), 21 states have internal predecessors, (7822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:17:21,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 1022.0) internal successors, (22484), 22 states have internal predecessors, (22484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:17:21,543 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 1022.0) internal successors, (22484), 22 states have internal predecessors, (22484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:17:21,544 INFO L175 Difference]: Start difference. First operand has 190 places, 504 transitions, 7549 flow. Second operand 21 states and 7822 transitions. [2022-12-13 15:17:21,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 1058 transitions, 14371 flow [2022-12-13 15:20:25,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 1058 transitions, 14241 flow, removed 9 selfloop flow, removed 4 redundant places. [2022-12-13 15:20:25,334 INFO L231 Difference]: Finished difference. Result has 210 places, 563 transitions, 8827 flow [2022-12-13 15:20:25,334 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1022, PETRI_DIFFERENCE_MINUEND_FLOW=7411, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=8827, PETRI_PLACES=210, PETRI_TRANSITIONS=563} [2022-12-13 15:20:25,334 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, 69 predicate places. [2022-12-13 15:20:25,335 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 563 transitions, 8827 flow [2022-12-13 15:20:25,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 357.44444444444446) internal successors, (9651), 27 states have internal predecessors, (9651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:20:25,336 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:20:25,336 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:20:25,341 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1af719-7e7b-4e06-8657-f777cb261b95/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 15:20:25,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a1af719-7e7b-4e06-8657-f777cb261b95/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-12-13 15:20:25,538 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2022-12-13 15:20:25,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:20:25,539 INFO L85 PathProgramCache]: Analyzing trace with hash -741229947, now seen corresponding path program 1 times [2022-12-13 15:20:25,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:20:25,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579939775] [2022-12-13 15:20:25,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:20:25,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:20:25,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:26,161 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 15:20:26,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:20:26,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579939775] [2022-12-13 15:20:26,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579939775] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:20:26,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:20:26,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 15:20:26,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459003083] [2022-12-13 15:20:26,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:20:26,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 15:20:26,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:20:26,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 15:20:26,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-12-13 15:20:27,404 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 453 out of 1022 [2022-12-13 15:20:27,405 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 563 transitions, 8827 flow. Second operand has 11 states, 11 states have (on average 455.45454545454544) internal successors, (5010), 11 states have internal predecessors, (5010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:20:27,406 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:20:27,406 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 453 of 1022 [2022-12-13 15:20:27,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:21:04,491 INFO L130 PetriNetUnfolder]: 115704/198594 cut-off events. [2022-12-13 15:21:04,491 INFO L131 PetriNetUnfolder]: For 1563008/1596855 co-relation queries the response was YES. [2022-12-13 15:21:07,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 787667 conditions, 198594 events. 115704/198594 cut-off events. For 1563008/1596855 co-relation queries the response was YES. Maximal size of possible extension queue 7098. Compared 2105747 event pairs, 38553 based on Foata normal form. 1163/177912 useless extension candidates. Maximal degree in co-relation 787613. Up to 136594 conditions per place. [2022-12-13 15:21:07,206 INFO L137 encePairwiseOnDemand]: 1016/1022 looper letters, 0 selfloop transitions, 0 changer transitions 590/590 dead transitions. [2022-12-13 15:21:07,206 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 590 transitions, 9973 flow [2022-12-13 15:21:07,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 15:21:07,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 15:21:07,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3237 transitions. [2022-12-13 15:21:07,210 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4524741403410679 [2022-12-13 15:21:07,210 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3237 transitions. [2022-12-13 15:21:07,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3237 transitions. [2022-12-13 15:21:07,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:21:07,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3237 transitions. [2022-12-13 15:21:07,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 462.42857142857144) internal successors, (3237), 7 states have internal predecessors, (3237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:21:07,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1022.0) internal successors, (8176), 8 states have internal predecessors, (8176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:21:07,216 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1022.0) internal successors, (8176), 8 states have internal predecessors, (8176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:21:07,216 INFO L175 Difference]: Start difference. First operand has 210 places, 563 transitions, 8827 flow. Second operand 7 states and 3237 transitions. [2022-12-13 15:21:07,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 590 transitions, 9973 flow