./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/weaver/popl20-three-array-min.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_a6c07f72-e659-41cd-a121-07f1a3fbbbfe/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c07f72-e659-41cd-a121-07f1a3fbbbfe/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_a6c07f72-e659-41cd-a121-07f1a3fbbbfe/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c07f72-e659-41cd-a121-07f1a3fbbbfe/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c07f72-e659-41cd-a121-07f1a3fbbbfe/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_a6c07f72-e659-41cd-a121-07f1a3fbbbfe/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 3e185f9c0dac86cdbb29caae2de39811a090d813c08c4c3552062c2aa77b8788 --- 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 19:42:48,200 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 19:42:48,201 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 19:42:48,214 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 19:42:48,214 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 19:42:48,215 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 19:42:48,216 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 19:42:48,218 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 19:42:48,221 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 19:42:48,222 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 19:42:48,223 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 19:42:48,225 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 19:42:48,226 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 19:42:48,227 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 19:42:48,229 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 19:42:48,230 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 19:42:48,232 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 19:42:48,233 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 19:42:48,235 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 19:42:48,238 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 19:42:48,241 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 19:42:48,242 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 19:42:48,244 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 19:42:48,245 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 19:42:48,251 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 19:42:48,252 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 19:42:48,252 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 19:42:48,253 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 19:42:48,254 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 19:42:48,255 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 19:42:48,256 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 19:42:48,257 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 19:42:48,258 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 19:42:48,258 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 19:42:48,259 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 19:42:48,259 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 19:42:48,260 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 19:42:48,260 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 19:42:48,260 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 19:42:48,261 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 19:42:48,262 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 19:42:48,262 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c07f72-e659-41cd-a121-07f1a3fbbbfe/bin/uautomizer-uyxdKDjOR8/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-12-13 19:42:48,281 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 19:42:48,282 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 19:42:48,282 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 19:42:48,282 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 19:42:48,283 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 19:42:48,283 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 19:42:48,288 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 19:42:48,288 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 19:42:48,288 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 19:42:48,288 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 19:42:48,288 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 19:42:48,288 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 19:42:48,288 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 19:42:48,288 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 19:42:48,289 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 19:42:48,289 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 19:42:48,289 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 19:42:48,289 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 19:42:48,289 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-12-13 19:42:48,289 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 19:42:48,289 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 19:42:48,290 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 19:42:48,290 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 19:42:48,290 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 19:42:48,290 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 19:42:48,290 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 19:42:48,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:42:48,291 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 19:42:48,291 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 19:42:48,291 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 19:42:48,291 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 19:42:48,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 19:42:48,291 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 19:42:48,291 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 19:42:48,291 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 19:42:48,292 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 19:42:48,292 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 19:42:48,292 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_a6c07f72-e659-41cd-a121-07f1a3fbbbfe/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c07f72-e659-41cd-a121-07f1a3fbbbfe/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e185f9c0dac86cdbb29caae2de39811a090d813c08c4c3552062c2aa77b8788 [2022-12-13 19:42:48,473 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 19:42:48,494 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 19:42:48,496 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 19:42:48,497 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 19:42:48,498 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 19:42:48,499 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c07f72-e659-41cd-a121-07f1a3fbbbfe/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c [2022-12-13 19:42:51,105 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 19:42:51,245 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 19:42:51,246 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c07f72-e659-41cd-a121-07f1a3fbbbfe/sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c [2022-12-13 19:42:51,251 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c07f72-e659-41cd-a121-07f1a3fbbbfe/bin/uautomizer-uyxdKDjOR8/data/c79d45c2c/325fea4b48e34a8fa3d33c308d06407e/FLAG831f29e6a [2022-12-13 19:42:51,262 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c07f72-e659-41cd-a121-07f1a3fbbbfe/bin/uautomizer-uyxdKDjOR8/data/c79d45c2c/325fea4b48e34a8fa3d33c308d06407e [2022-12-13 19:42:51,264 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 19:42:51,266 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 19:42:51,267 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 19:42:51,267 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 19:42:51,270 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 19:42:51,271 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:42:51" (1/1) ... [2022-12-13 19:42:51,272 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56324052 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:42:51, skipping insertion in model container [2022-12-13 19:42:51,272 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:42:51" (1/1) ... [2022-12-13 19:42:51,277 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 19:42:51,293 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 19:42:51,423 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:42:51,427 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:42:51,429 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:42:51,430 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:42:51,431 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:42:51,433 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:42:51,447 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_a6c07f72-e659-41cd-a121-07f1a3fbbbfe/sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c[2815,2828] [2022-12-13 19:42:51,455 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:42:51,464 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 19:42:51,480 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:42:51,483 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:42:51,484 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:42:51,485 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:42:51,485 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:42:51,488 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:42:51,499 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_a6c07f72-e659-41cd-a121-07f1a3fbbbfe/sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c[2815,2828] [2022-12-13 19:42:51,502 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:42:51,513 INFO L208 MainTranslator]: Completed translation [2022-12-13 19:42:51,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:42:51 WrapperNode [2022-12-13 19:42:51,513 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 19:42:51,514 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 19:42:51,514 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 19:42:51,514 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 19:42:51,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:42:51" (1/1) ... [2022-12-13 19:42:51,529 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:42:51" (1/1) ... [2022-12-13 19:42:51,551 INFO L138 Inliner]: procedures = 26, calls = 57, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 371 [2022-12-13 19:42:51,552 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 19:42:51,552 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 19:42:51,552 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 19:42:51,552 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 19:42:51,559 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:42:51" (1/1) ... [2022-12-13 19:42:51,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:42:51" (1/1) ... [2022-12-13 19:42:51,564 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:42:51" (1/1) ... [2022-12-13 19:42:51,564 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:42:51" (1/1) ... [2022-12-13 19:42:51,577 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:42:51" (1/1) ... [2022-12-13 19:42:51,581 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:42:51" (1/1) ... [2022-12-13 19:42:51,582 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:42:51" (1/1) ... [2022-12-13 19:42:51,584 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:42:51" (1/1) ... [2022-12-13 19:42:51,587 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 19:42:51,588 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 19:42:51,588 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 19:42:51,588 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 19:42:51,588 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:42:51" (1/1) ... [2022-12-13 19:42:51,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:42:51,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c07f72-e659-41cd-a121-07f1a3fbbbfe/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:42:51,610 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c07f72-e659-41cd-a121-07f1a3fbbbfe/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 19:42:51,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c07f72-e659-41cd-a121-07f1a3fbbbfe/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 19:42:51,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 19:42:51,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 19:42:51,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 19:42:51,645 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 19:42:51,645 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 19:42:51,645 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 19:42:51,645 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 19:42:51,645 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 19:42:51,646 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 19:42:51,646 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 19:42:51,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 19:42:51,646 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 19:42:51,646 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 19:42:51,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 19:42:51,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 19:42:51,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 19:42:51,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 19:42:51,649 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 19:42:51,741 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 19:42:51,742 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 19:42:52,298 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 19:42:52,453 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 19:42:52,453 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-12-13 19:42:52,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:42:52 BoogieIcfgContainer [2022-12-13 19:42:52,456 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 19:42:52,458 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 19:42:52,458 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 19:42:52,462 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 19:42:52,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 07:42:51" (1/3) ... [2022-12-13 19:42:52,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4518eadf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:42:52, skipping insertion in model container [2022-12-13 19:42:52,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:42:51" (2/3) ... [2022-12-13 19:42:52,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4518eadf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:42:52, skipping insertion in model container [2022-12-13 19:42:52,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:42:52" (3/3) ... [2022-12-13 19:42:52,464 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-min.wvr.c [2022-12-13 19:42:52,473 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 19:42:52,483 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 19:42:52,483 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 58 error locations. [2022-12-13 19:42:52,484 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 19:42:52,574 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 19:42:52,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 511 places, 528 transitions, 1080 flow [2022-12-13 19:42:52,738 INFO L130 PetriNetUnfolder]: 27/525 cut-off events. [2022-12-13 19:42:52,738 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 19:42:52,744 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 19:42:52,745 INFO L82 GeneralOperation]: Start removeDead. Operand has 511 places, 528 transitions, 1080 flow [2022-12-13 19:42:52,752 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 464 places, 478 transitions, 974 flow [2022-12-13 19:42:52,755 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 19:42:52,763 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 464 places, 478 transitions, 974 flow [2022-12-13 19:42:52,765 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 464 places, 478 transitions, 974 flow [2022-12-13 19:42:52,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 464 places, 478 transitions, 974 flow [2022-12-13 19:42:52,837 INFO L130 PetriNetUnfolder]: 24/478 cut-off events. [2022-12-13 19:42:52,837 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 19:42:52,839 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 19:42:52,844 INFO L119 LiptonReduction]: Number of co-enabled transitions 13362 [2022-12-13 19:43:20,018 INFO L134 LiptonReduction]: Checked pairs total: 104430 [2022-12-13 19:43:20,019 INFO L136 LiptonReduction]: Total number of compositions: 494 [2022-12-13 19:43:20,029 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 19:43:20,033 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;@e1bf9b7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 19:43:20,034 INFO L358 AbstractCegarLoop]: Starting to check reachability of 90 error locations. [2022-12-13 19:43:20,035 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 19:43:20,035 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 19:43:20,035 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:43:20,035 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 19:43:20,036 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 19:43:20,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:43:20,039 INFO L85 PathProgramCache]: Analyzing trace with hash 2016, now seen corresponding path program 1 times [2022-12-13 19:43:20,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:43:20,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021406553] [2022-12-13 19:43:20,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:43:20,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:43:20,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:43:20,118 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 19:43:20,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:43:20,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021406553] [2022-12-13 19:43:20,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021406553] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:43:20,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:43:20,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 19:43:20,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635382046] [2022-12-13 19:43:20,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:43:20,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 19:43:20,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:43:20,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 19:43:20,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 19:43:20,146 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 486 out of 1022 [2022-12-13 19:43:20,150 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 19:43:20,151 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:43:20,151 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 486 of 1022 [2022-12-13 19:43:20,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:43:20,587 INFO L130 PetriNetUnfolder]: 1464/3602 cut-off events. [2022-12-13 19:43:20,587 INFO L131 PetriNetUnfolder]: For 93/93 co-relation queries the response was YES. [2022-12-13 19:43:20,594 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 19:43:20,608 INFO L137 encePairwiseOnDemand]: 976/1022 looper letters, 35 selfloop transitions, 0 changer transitions 1/97 dead transitions. [2022-12-13 19:43:20,608 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 97 transitions, 284 flow [2022-12-13 19:43:20,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 19:43:20,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 19:43:20,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1054 transitions. [2022-12-13 19:43:20,620 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5156555772994129 [2022-12-13 19:43:20,621 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1054 transitions. [2022-12-13 19:43:20,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1054 transitions. [2022-12-13 19:43:20,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:43:20,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1054 transitions. [2022-12-13 19:43:20,631 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 19:43:20,637 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 19:43:20,638 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 19:43:20,639 INFO L175 Difference]: Start difference. First operand has 141 places, 143 transitions, 304 flow. Second operand 2 states and 1054 transitions. [2022-12-13 19:43:20,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 97 transitions, 284 flow [2022-12-13 19:43:20,643 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 19:43:20,645 INFO L231 Difference]: Finished difference. Result has 93 places, 96 transitions, 197 flow [2022-12-13 19:43:20,646 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 19:43:20,649 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, -48 predicate places. [2022-12-13 19:43:20,649 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 96 transitions, 197 flow [2022-12-13 19:43:20,650 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 19:43:20,650 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:43:20,650 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:43:20,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 19:43:20,651 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 19:43:20,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:43:20,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1282380923, now seen corresponding path program 1 times [2022-12-13 19:43:20,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:43:20,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787395594] [2022-12-13 19:43:20,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:43:20,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:43:20,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:43:20,802 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 19:43:20,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:43:20,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787395594] [2022-12-13 19:43:20,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787395594] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:43:20,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:43:20,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:43:20,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146453308] [2022-12-13 19:43:20,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:43:20,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:43:20,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:43:20,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:43:20,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:43:20,841 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 464 out of 1022 [2022-12-13 19:43:20,843 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 19:43:20,843 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:43:20,843 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 464 of 1022 [2022-12-13 19:43:20,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:43:21,368 INFO L130 PetriNetUnfolder]: 2244/5202 cut-off events. [2022-12-13 19:43:21,369 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2022-12-13 19:43:21,374 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 19:43:21,394 INFO L137 encePairwiseOnDemand]: 1018/1022 looper letters, 38 selfloop transitions, 1 changer transitions 0/93 dead transitions. [2022-12-13 19:43:21,394 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 93 transitions, 269 flow [2022-12-13 19:43:21,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:43:21,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:43:21,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1434 transitions. [2022-12-13 19:43:21,399 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46771037181996084 [2022-12-13 19:43:21,399 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1434 transitions. [2022-12-13 19:43:21,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1434 transitions. [2022-12-13 19:43:21,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:43:21,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1434 transitions. [2022-12-13 19:43:21,403 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 19:43:21,409 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 19:43:21,410 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 19:43:21,410 INFO L175 Difference]: Start difference. First operand has 93 places, 96 transitions, 197 flow. Second operand 3 states and 1434 transitions. [2022-12-13 19:43:21,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 93 transitions, 269 flow [2022-12-13 19:43:21,411 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 19:43:21,412 INFO L231 Difference]: Finished difference. Result has 91 places, 93 transitions, 193 flow [2022-12-13 19:43:21,412 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 19:43:21,412 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, -50 predicate places. [2022-12-13 19:43:21,412 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 93 transitions, 193 flow [2022-12-13 19:43:21,413 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 19:43:21,413 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:43:21,413 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:43:21,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 19:43:21,414 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 19:43:21,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:43:21,414 INFO L85 PathProgramCache]: Analyzing trace with hash 287979962, now seen corresponding path program 1 times [2022-12-13 19:43:21,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:43:21,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998939297] [2022-12-13 19:43:21,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:43:21,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:43:21,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:43:21,521 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 19:43:21,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:43:21,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998939297] [2022-12-13 19:43:21,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998939297] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:43:21,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:43:21,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:43:21,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294569220] [2022-12-13 19:43:21,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:43:21,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:43:21,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:43:21,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:43:21,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:43:21,540 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 473 out of 1022 [2022-12-13 19:43:21,542 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 19:43:21,543 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:43:21,543 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 473 of 1022 [2022-12-13 19:43:21,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:43:22,000 INFO L130 PetriNetUnfolder]: 1885/4239 cut-off events. [2022-12-13 19:43:22,001 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2022-12-13 19:43:22,006 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 19:43:22,019 INFO L137 encePairwiseOnDemand]: 1019/1022 looper letters, 37 selfloop transitions, 1 changer transitions 0/91 dead transitions. [2022-12-13 19:43:22,020 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 91 transitions, 265 flow [2022-12-13 19:43:22,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:43:22,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:43:22,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1459 transitions. [2022-12-13 19:43:22,022 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47586431833007176 [2022-12-13 19:43:22,022 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1459 transitions. [2022-12-13 19:43:22,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1459 transitions. [2022-12-13 19:43:22,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:43:22,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1459 transitions. [2022-12-13 19:43:22,024 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 19:43:22,028 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 19:43:22,029 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 19:43:22,029 INFO L175 Difference]: Start difference. First operand has 91 places, 93 transitions, 193 flow. Second operand 3 states and 1459 transitions. [2022-12-13 19:43:22,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 91 transitions, 265 flow [2022-12-13 19:43:22,030 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 19:43:22,031 INFO L231 Difference]: Finished difference. Result has 90 places, 91 transitions, 190 flow [2022-12-13 19:43:22,031 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 19:43:22,031 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, -51 predicate places. [2022-12-13 19:43:22,031 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 91 transitions, 190 flow [2022-12-13 19:43:22,032 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 19:43:22,032 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:43:22,032 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:43:22,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 19:43:22,032 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 19:43:22,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:43:22,033 INFO L85 PathProgramCache]: Analyzing trace with hash 729605301, now seen corresponding path program 1 times [2022-12-13 19:43:22,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:43:22,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658945042] [2022-12-13 19:43:22,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:43:22,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:43:22,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:43:22,152 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 19:43:22,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:43:22,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658945042] [2022-12-13 19:43:22,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658945042] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:43:22,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:43:22,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:43:22,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093338707] [2022-12-13 19:43:22,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:43:22,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:43:22,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:43:22,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:43:22,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:43:22,237 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 474 out of 1022 [2022-12-13 19:43:22,239 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 19:43:22,239 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:43:22,239 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 474 of 1022 [2022-12-13 19:43:22,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:43:22,615 INFO L130 PetriNetUnfolder]: 1464/3422 cut-off events. [2022-12-13 19:43:22,615 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2022-12-13 19:43:22,618 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 19:43:22,626 INFO L137 encePairwiseOnDemand]: 1019/1022 looper letters, 34 selfloop transitions, 2 changer transitions 0/92 dead transitions. [2022-12-13 19:43:22,626 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 92 transitions, 264 flow [2022-12-13 19:43:22,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:43:22,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:43:22,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1459 transitions. [2022-12-13 19:43:22,629 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47586431833007176 [2022-12-13 19:43:22,629 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1459 transitions. [2022-12-13 19:43:22,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1459 transitions. [2022-12-13 19:43:22,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:43:22,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1459 transitions. [2022-12-13 19:43:22,631 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 19:43:22,634 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 19:43:22,635 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 19:43:22,635 INFO L175 Difference]: Start difference. First operand has 90 places, 91 transitions, 190 flow. Second operand 3 states and 1459 transitions. [2022-12-13 19:43:22,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 92 transitions, 264 flow [2022-12-13 19:43:22,636 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 19:43:22,637 INFO L231 Difference]: Finished difference. Result has 92 places, 92 transitions, 201 flow [2022-12-13 19:43:22,637 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 19:43:22,637 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, -49 predicate places. [2022-12-13 19:43:22,637 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 92 transitions, 201 flow [2022-12-13 19:43:22,638 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 19:43:22,638 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:43:22,638 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:43:22,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 19:43:22,638 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 19:43:22,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:43:22,638 INFO L85 PathProgramCache]: Analyzing trace with hash -443226901, now seen corresponding path program 1 times [2022-12-13 19:43:22,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:43:22,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774690925] [2022-12-13 19:43:22,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:43:22,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:43:22,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:43:22,735 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 19:43:22,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:43:22,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774690925] [2022-12-13 19:43:22,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774690925] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:43:22,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:43:22,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:43:22,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728925499] [2022-12-13 19:43:22,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:43:22,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:43:22,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:43:22,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:43:22,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:43:22,847 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 472 out of 1022 [2022-12-13 19:43:22,850 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 19:43:22,850 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:43:22,850 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 472 of 1022 [2022-12-13 19:43:22,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:43:23,293 INFO L130 PetriNetUnfolder]: 1464/3424 cut-off events. [2022-12-13 19:43:23,294 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2022-12-13 19:43:23,298 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 19:43:23,308 INFO L137 encePairwiseOnDemand]: 1015/1022 looper letters, 32 selfloop transitions, 6 changer transitions 0/94 dead transitions. [2022-12-13 19:43:23,308 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 94 transitions, 281 flow [2022-12-13 19:43:23,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 19:43:23,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 19:43:23,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1928 transitions. [2022-12-13 19:43:23,312 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47162426614481406 [2022-12-13 19:43:23,312 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1928 transitions. [2022-12-13 19:43:23,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1928 transitions. [2022-12-13 19:43:23,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:43:23,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1928 transitions. [2022-12-13 19:43:23,316 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 19:43:23,321 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 19:43:23,323 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 19:43:23,323 INFO L175 Difference]: Start difference. First operand has 92 places, 92 transitions, 201 flow. Second operand 4 states and 1928 transitions. [2022-12-13 19:43:23,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 94 transitions, 281 flow [2022-12-13 19:43:23,324 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 19:43:23,325 INFO L231 Difference]: Finished difference. Result has 95 places, 94 transitions, 225 flow [2022-12-13 19:43:23,325 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 19:43:23,326 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, -46 predicate places. [2022-12-13 19:43:23,326 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 94 transitions, 225 flow [2022-12-13 19:43:23,327 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 19:43:23,327 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:43:23,327 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 19:43:23,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 19:43:23,327 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 19:43:23,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:43:23,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1195174629, now seen corresponding path program 1 times [2022-12-13 19:43:23,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:43:23,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933520613] [2022-12-13 19:43:23,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:43:23,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:43:23,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:43:23,808 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 19:43:23,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:43:23,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933520613] [2022-12-13 19:43:23,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933520613] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:43:23,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:43:23,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 19:43:23,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950616668] [2022-12-13 19:43:23,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:43:23,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 19:43:23,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:43:23,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 19:43:23,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:43:24,217 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 465 out of 1022 [2022-12-13 19:43:24,219 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 19:43:24,219 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:43:24,219 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 465 of 1022 [2022-12-13 19:43:24,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:43:25,950 INFO L130 PetriNetUnfolder]: 7780/13371 cut-off events. [2022-12-13 19:43:25,950 INFO L131 PetriNetUnfolder]: For 20/32 co-relation queries the response was YES. [2022-12-13 19:43:25,964 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 19:43:26,012 INFO L137 encePairwiseOnDemand]: 1015/1022 looper letters, 115 selfloop transitions, 9 changer transitions 0/174 dead transitions. [2022-12-13 19:43:26,012 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 174 transitions, 635 flow [2022-12-13 19:43:26,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:43:26,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 19:43:26,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2912 transitions. [2022-12-13 19:43:26,016 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4748858447488584 [2022-12-13 19:43:26,017 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2912 transitions. [2022-12-13 19:43:26,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2912 transitions. [2022-12-13 19:43:26,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:43:26,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2912 transitions. [2022-12-13 19:43:26,022 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 19:43:26,027 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 19:43:26,028 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 19:43:26,029 INFO L175 Difference]: Start difference. First operand has 95 places, 94 transitions, 225 flow. Second operand 6 states and 2912 transitions. [2022-12-13 19:43:26,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 174 transitions, 635 flow [2022-12-13 19:43:26,030 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 19:43:26,032 INFO L231 Difference]: Finished difference. Result has 104 places, 102 transitions, 288 flow [2022-12-13 19:43:26,033 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 19:43:26,033 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, -37 predicate places. [2022-12-13 19:43:26,033 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 102 transitions, 288 flow [2022-12-13 19:43:26,035 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 19:43:26,035 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:43:26,035 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 19:43:26,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 19:43:26,035 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 19:43:26,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:43:26,036 INFO L85 PathProgramCache]: Analyzing trace with hash -176018674, now seen corresponding path program 1 times [2022-12-13 19:43:26,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:43:26,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958866046] [2022-12-13 19:43:26,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:43:26,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:43:26,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:43:26,156 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 19:43:26,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:43:26,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958866046] [2022-12-13 19:43:26,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958866046] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:43:26,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955210605] [2022-12-13 19:43:26,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:43:26,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:43:26,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c07f72-e659-41cd-a121-07f1a3fbbbfe/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:43:26,158 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c07f72-e659-41cd-a121-07f1a3fbbbfe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:43:26,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c07f72-e659-41cd-a121-07f1a3fbbbfe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 19:43:26,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:43:26,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 19:43:26,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:43:26,357 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 19:43:26,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:43:26,402 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 19:43:26,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955210605] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:43:26,402 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:43:26,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-12-13 19:43:26,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62109020] [2022-12-13 19:43:26,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:43:26,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 19:43:26,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:43:26,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 19:43:26,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-12-13 19:43:26,917 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 462 out of 1022 [2022-12-13 19:43:26,922 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 19:43:26,922 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:43:26,922 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 462 of 1022 [2022-12-13 19:43:26,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:43:28,917 INFO L130 PetriNetUnfolder]: 5656/11573 cut-off events. [2022-12-13 19:43:28,917 INFO L131 PetriNetUnfolder]: For 1464/1585 co-relation queries the response was YES. [2022-12-13 19:43:28,933 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 19:43:28,958 INFO L137 encePairwiseOnDemand]: 1012/1022 looper letters, 132 selfloop transitions, 21 changer transitions 0/212 dead transitions. [2022-12-13 19:43:28,958 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 212 transitions, 963 flow [2022-12-13 19:43:28,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 19:43:28,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-13 19:43:28,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 4751 transitions. [2022-12-13 19:43:28,964 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4648727984344423 [2022-12-13 19:43:28,964 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 4751 transitions. [2022-12-13 19:43:28,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 4751 transitions. [2022-12-13 19:43:28,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:43:28,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 4751 transitions. [2022-12-13 19:43:28,971 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 19:43:28,979 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 19:43:28,981 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 19:43:28,981 INFO L175 Difference]: Start difference. First operand has 104 places, 102 transitions, 288 flow. Second operand 10 states and 4751 transitions. [2022-12-13 19:43:28,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 212 transitions, 963 flow [2022-12-13 19:43:28,990 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 19:43:28,992 INFO L231 Difference]: Finished difference. Result has 118 places, 117 transitions, 438 flow [2022-12-13 19:43:28,992 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 19:43:28,992 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, -23 predicate places. [2022-12-13 19:43:28,993 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 117 transitions, 438 flow [2022-12-13 19:43:28,994 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 19:43:28,994 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:43:28,994 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 19:43:29,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c07f72-e659-41cd-a121-07f1a3fbbbfe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 19:43:29,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c07f72-e659-41cd-a121-07f1a3fbbbfe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:43:29,195 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 19:43:29,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:43:29,195 INFO L85 PathProgramCache]: Analyzing trace with hash 434705341, now seen corresponding path program 1 times [2022-12-13 19:43:29,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:43:29,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483048028] [2022-12-13 19:43:29,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:43:29,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:43:29,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:43:29,331 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 19:43:29,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:43:29,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483048028] [2022-12-13 19:43:29,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483048028] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:43:29,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286778004] [2022-12-13 19:43:29,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:43:29,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:43:29,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c07f72-e659-41cd-a121-07f1a3fbbbfe/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:43:29,333 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c07f72-e659-41cd-a121-07f1a3fbbbfe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:43:29,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c07f72-e659-41cd-a121-07f1a3fbbbfe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 19:43:29,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:43:29,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 19:43:29,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:43:29,527 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 19:43:29,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:43:29,570 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 19:43:29,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286778004] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:43:29,570 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:43:29,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-12-13 19:43:29,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840165461] [2022-12-13 19:43:29,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:43:29,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 19:43:29,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:43:29,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 19:43:29,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-12-13 19:43:29,992 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 462 out of 1022 [2022-12-13 19:43:29,997 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 19:43:29,997 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:43:29,997 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 462 of 1022 [2022-12-13 19:43:29,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:43:31,449 INFO L130 PetriNetUnfolder]: 3944/8544 cut-off events. [2022-12-13 19:43:31,449 INFO L131 PetriNetUnfolder]: For 1892/2107 co-relation queries the response was YES. [2022-12-13 19:43:31,461 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 19:43:31,479 INFO L137 encePairwiseOnDemand]: 1012/1022 looper letters, 112 selfloop transitions, 21 changer transitions 0/194 dead transitions. [2022-12-13 19:43:31,480 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 194 transitions, 909 flow [2022-12-13 19:43:31,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 19:43:31,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-13 19:43:31,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 4751 transitions. [2022-12-13 19:43:31,486 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4648727984344423 [2022-12-13 19:43:31,486 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 4751 transitions. [2022-12-13 19:43:31,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 4751 transitions. [2022-12-13 19:43:31,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:43:31,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 4751 transitions. [2022-12-13 19:43:31,492 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 19:43:31,500 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 19:43:31,502 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 19:43:31,502 INFO L175 Difference]: Start difference. First operand has 118 places, 117 transitions, 438 flow. Second operand 10 states and 4751 transitions. [2022-12-13 19:43:31,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 194 transitions, 909 flow [2022-12-13 19:43:31,511 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 19:43:31,512 INFO L231 Difference]: Finished difference. Result has 129 places, 120 transitions, 481 flow [2022-12-13 19:43:31,513 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 19:43:31,513 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, -12 predicate places. [2022-12-13 19:43:31,513 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 120 transitions, 481 flow [2022-12-13 19:43:31,514 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 19:43:31,514 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:43:31,515 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 19:43:31,521 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c07f72-e659-41cd-a121-07f1a3fbbbfe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 19:43:31,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c07f72-e659-41cd-a121-07f1a3fbbbfe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:43:31,716 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 19:43:31,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:43:31,716 INFO L85 PathProgramCache]: Analyzing trace with hash -619889154, now seen corresponding path program 2 times [2022-12-13 19:43:31,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:43:31,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194265740] [2022-12-13 19:43:31,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:43:31,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:43:31,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:43:32,022 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 19:43:32,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:43:32,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194265740] [2022-12-13 19:43:32,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194265740] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:43:32,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:43:32,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 19:43:32,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240376581] [2022-12-13 19:43:32,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:43:32,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 19:43:32,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:43:32,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 19:43:32,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:43:32,455 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 458 out of 1022 [2022-12-13 19:43:32,456 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 19:43:32,457 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:43:32,457 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 458 of 1022 [2022-12-13 19:43:32,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:43:34,996 INFO L130 PetriNetUnfolder]: 12094/20092 cut-off events. [2022-12-13 19:43:34,996 INFO L131 PetriNetUnfolder]: For 9197/9753 co-relation queries the response was YES. [2022-12-13 19:43:35,039 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 19:43:35,090 INFO L137 encePairwiseOnDemand]: 1006/1022 looper letters, 119 selfloop transitions, 33 changer transitions 0/203 dead transitions. [2022-12-13 19:43:35,090 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 203 transitions, 1059 flow [2022-12-13 19:43:35,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:43:35,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 19:43:35,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2863 transitions. [2022-12-13 19:43:35,094 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4668949771689498 [2022-12-13 19:43:35,095 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2863 transitions. [2022-12-13 19:43:35,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2863 transitions. [2022-12-13 19:43:35,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:43:35,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2863 transitions. [2022-12-13 19:43:35,098 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 19:43:35,102 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 19:43:35,103 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 19:43:35,103 INFO L175 Difference]: Start difference. First operand has 129 places, 120 transitions, 481 flow. Second operand 6 states and 2863 transitions. [2022-12-13 19:43:35,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 203 transitions, 1059 flow [2022-12-13 19:43:35,248 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 19:43:35,249 INFO L231 Difference]: Finished difference. Result has 136 places, 152 transitions, 766 flow [2022-12-13 19:43:35,250 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 19:43:35,250 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, -5 predicate places. [2022-12-13 19:43:35,250 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 152 transitions, 766 flow [2022-12-13 19:43:35,250 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 19:43:35,251 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:43:35,251 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 19:43:35,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 19:43:35,251 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 19:43:35,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:43:35,251 INFO L85 PathProgramCache]: Analyzing trace with hash -2036680401, now seen corresponding path program 1 times [2022-12-13 19:43:35,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:43:35,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707797084] [2022-12-13 19:43:35,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:43:35,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:43:35,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:43:35,300 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 19:43:35,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:43:35,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707797084] [2022-12-13 19:43:35,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707797084] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:43:35,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:43:35,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:43:35,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134513882] [2022-12-13 19:43:35,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:43:35,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:43:35,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:43:35,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:43:35,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:43:35,313 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 478 out of 1022 [2022-12-13 19:43:35,314 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 19:43:35,314 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:43:35,314 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 478 of 1022 [2022-12-13 19:43:35,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:43:38,423 INFO L130 PetriNetUnfolder]: 12185/23982 cut-off events. [2022-12-13 19:43:38,424 INFO L131 PetriNetUnfolder]: For 22359/24329 co-relation queries the response was YES. [2022-12-13 19:43:38,513 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 19:43:38,590 INFO L137 encePairwiseOnDemand]: 1018/1022 looper letters, 124 selfloop transitions, 6 changer transitions 0/200 dead transitions. [2022-12-13 19:43:38,590 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 200 transitions, 1338 flow [2022-12-13 19:43:38,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:43:38,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:43:38,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1492 transitions. [2022-12-13 19:43:38,593 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4866275277234181 [2022-12-13 19:43:38,593 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1492 transitions. [2022-12-13 19:43:38,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1492 transitions. [2022-12-13 19:43:38,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:43:38,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1492 transitions. [2022-12-13 19:43:38,595 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 19:43:38,598 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 19:43:38,598 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 19:43:38,598 INFO L175 Difference]: Start difference. First operand has 136 places, 152 transitions, 766 flow. Second operand 3 states and 1492 transitions. [2022-12-13 19:43:38,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 200 transitions, 1338 flow [2022-12-13 19:43:38,688 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 19:43:38,690 INFO L231 Difference]: Finished difference. Result has 138 places, 155 transitions, 810 flow [2022-12-13 19:43:38,690 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 19:43:38,690 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, -3 predicate places. [2022-12-13 19:43:38,690 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 155 transitions, 810 flow [2022-12-13 19:43:38,691 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 19:43:38,691 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:43:38,691 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 19:43:38,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 19:43:38,691 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 19:43:38,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:43:38,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1287426553, now seen corresponding path program 1 times [2022-12-13 19:43:38,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:43:38,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787710920] [2022-12-13 19:43:38,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:43:38,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:43:38,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:43:38,784 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 19:43:38,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:43:38,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787710920] [2022-12-13 19:43:38,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787710920] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:43:38,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:43:38,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:43:38,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633740980] [2022-12-13 19:43:38,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:43:38,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:43:38,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:43:38,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:43:38,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:43:38,798 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 473 out of 1022 [2022-12-13 19:43:38,799 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 19:43:38,799 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:43:38,799 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 473 of 1022 [2022-12-13 19:43:38,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:43:41,782 INFO L130 PetriNetUnfolder]: 13371/24582 cut-off events. [2022-12-13 19:43:41,782 INFO L131 PetriNetUnfolder]: For 28380/30695 co-relation queries the response was YES. [2022-12-13 19:43:41,878 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 19:43:41,971 INFO L137 encePairwiseOnDemand]: 1019/1022 looper letters, 85 selfloop transitions, 2 changer transitions 0/153 dead transitions. [2022-12-13 19:43:41,971 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 153 transitions, 980 flow [2022-12-13 19:43:41,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:43:41,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:43:41,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1458 transitions. [2022-12-13 19:43:41,974 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4755381604696673 [2022-12-13 19:43:41,974 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1458 transitions. [2022-12-13 19:43:41,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1458 transitions. [2022-12-13 19:43:41,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:43:41,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1458 transitions. [2022-12-13 19:43:41,977 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 19:43:41,980 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 19:43:41,980 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 19:43:41,980 INFO L175 Difference]: Start difference. First operand has 138 places, 155 transitions, 810 flow. Second operand 3 states and 1458 transitions. [2022-12-13 19:43:41,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 153 transitions, 980 flow [2022-12-13 19:43:42,092 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 19:43:42,094 INFO L231 Difference]: Finished difference. Result has 137 places, 153 transitions, 804 flow [2022-12-13 19:43:42,094 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 19:43:42,095 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, -4 predicate places. [2022-12-13 19:43:42,095 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 153 transitions, 804 flow [2022-12-13 19:43:42,095 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 19:43:42,095 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:43:42,095 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 19:43:42,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 19:43:42,095 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 19:43:42,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:43:42,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1293540045, now seen corresponding path program 2 times [2022-12-13 19:43:42,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:43:42,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75133691] [2022-12-13 19:43:42,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:43:42,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:43:42,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:43:43,428 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 19:43:43,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:43:43,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75133691] [2022-12-13 19:43:43,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75133691] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:43:43,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:43:43,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 19:43:43,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551656204] [2022-12-13 19:43:43,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:43:43,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 19:43:43,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:43:43,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 19:43:43,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-12-13 19:43:44,797 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 453 out of 1022 [2022-12-13 19:43:44,799 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 19:43:44,799 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:43:44,799 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 453 of 1022 [2022-12-13 19:43:44,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:43:49,144 INFO L130 PetriNetUnfolder]: 23033/36246 cut-off events. [2022-12-13 19:43:49,144 INFO L131 PetriNetUnfolder]: For 39871/43623 co-relation queries the response was YES. [2022-12-13 19:43:49,268 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 19:43:49,383 INFO L137 encePairwiseOnDemand]: 1016/1022 looper letters, 218 selfloop transitions, 8 changer transitions 0/284 dead transitions. [2022-12-13 19:43:49,383 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 284 transitions, 1948 flow [2022-12-13 19:43:49,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 19:43:49,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 19:43:49,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3284 transitions. [2022-12-13 19:43:49,389 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45904389152921443 [2022-12-13 19:43:49,389 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3284 transitions. [2022-12-13 19:43:49,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3284 transitions. [2022-12-13 19:43:49,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:43:49,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3284 transitions. [2022-12-13 19:43:49,393 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 19:43:49,397 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 19:43:49,397 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 19:43:49,397 INFO L175 Difference]: Start difference. First operand has 137 places, 153 transitions, 804 flow. Second operand 7 states and 3284 transitions. [2022-12-13 19:43:49,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 284 transitions, 1948 flow [2022-12-13 19:43:49,782 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 19:43:49,784 INFO L231 Difference]: Finished difference. Result has 140 places, 152 transitions, 807 flow [2022-12-13 19:43:49,784 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 19:43:49,785 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, -1 predicate places. [2022-12-13 19:43:49,785 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 152 transitions, 807 flow [2022-12-13 19:43:49,786 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 19:43:49,786 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:43:49,786 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 19:43:49,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 19:43:49,786 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 19:43:49,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:43:49,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1515824349, now seen corresponding path program 1 times [2022-12-13 19:43:49,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:43:49,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80138189] [2022-12-13 19:43:49,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:43:49,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:43:49,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:43:51,110 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 19:43:51,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:43:51,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80138189] [2022-12-13 19:43:51,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80138189] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:43:51,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:43:51,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 19:43:51,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233656258] [2022-12-13 19:43:51,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:43:51,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 19:43:51,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:43:51,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 19:43:51,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-12-13 19:43:52,461 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 451 out of 1022 [2022-12-13 19:43:52,465 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 19:43:52,465 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:43:52,465 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 451 of 1022 [2022-12-13 19:43:52,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:43:58,479 INFO L130 PetriNetUnfolder]: 24186/43332 cut-off events. [2022-12-13 19:43:58,479 INFO L131 PetriNetUnfolder]: For 53444/61164 co-relation queries the response was YES. [2022-12-13 19:43:58,632 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 19:43:58,761 INFO L137 encePairwiseOnDemand]: 1009/1022 looper letters, 234 selfloop transitions, 68 changer transitions 0/361 dead transitions. [2022-12-13 19:43:58,761 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 361 transitions, 2732 flow [2022-12-13 19:43:58,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 19:43:58,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 19:43:58,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 5100 transitions. [2022-12-13 19:43:58,767 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4536559331079879 [2022-12-13 19:43:58,768 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 5100 transitions. [2022-12-13 19:43:58,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 5100 transitions. [2022-12-13 19:43:58,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:43:58,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 5100 transitions. [2022-12-13 19:43:58,774 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 19:43:58,780 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 19:43:58,781 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 19:43:58,781 INFO L175 Difference]: Start difference. First operand has 140 places, 152 transitions, 807 flow. Second operand 11 states and 5100 transitions. [2022-12-13 19:43:58,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 361 transitions, 2732 flow [2022-12-13 19:43:58,838 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 19:43:58,840 INFO L231 Difference]: Finished difference. Result has 148 places, 201 transitions, 1478 flow [2022-12-13 19:43:58,840 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 19:43:58,840 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, 7 predicate places. [2022-12-13 19:43:58,841 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 201 transitions, 1478 flow [2022-12-13 19:43:58,841 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 19:43:58,841 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:43:58,841 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 19:43:58,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 19:43:58,841 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 19:43:58,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:43:58,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1274782609, now seen corresponding path program 2 times [2022-12-13 19:43:58,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:43:58,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619103956] [2022-12-13 19:43:58,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:43:58,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:43:58,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:43:59,897 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 19:43:59,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:43:59,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619103956] [2022-12-13 19:43:59,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619103956] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:43:59,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:43:59,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 19:43:59,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254719879] [2022-12-13 19:43:59,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:43:59,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 19:43:59,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:43:59,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 19:43:59,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-12-13 19:44:00,846 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 451 out of 1022 [2022-12-13 19:44:00,847 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 19:44:00,847 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:44:00,848 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 451 of 1022 [2022-12-13 19:44:00,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:44:08,147 INFO L130 PetriNetUnfolder]: 29907/55048 cut-off events. [2022-12-13 19:44:08,147 INFO L131 PetriNetUnfolder]: For 127742/137380 co-relation queries the response was YES. [2022-12-13 19:44:08,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158869 conditions, 55048 events. 29907/55048 cut-off events. For 127742/137380 co-relation queries the response was YES. Maximal size of possible extension queue 1291. Compared 515700 event pairs, 4869 based on Foata normal form. 683/49844 useless extension candidates. Maximal degree in co-relation 158841. Up to 18165 conditions per place. [2022-12-13 19:44:08,574 INFO L137 encePairwiseOnDemand]: 1010/1022 looper letters, 178 selfloop transitions, 145 changer transitions 0/382 dead transitions. [2022-12-13 19:44:08,574 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 382 transitions, 3507 flow [2022-12-13 19:44:08,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 19:44:08,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 19:44:08,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 5092 transitions. [2022-12-13 19:44:08,580 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4529443159580146 [2022-12-13 19:44:08,580 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 5092 transitions. [2022-12-13 19:44:08,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 5092 transitions. [2022-12-13 19:44:08,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:44:08,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 5092 transitions. [2022-12-13 19:44:08,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 462.90909090909093) internal successors, (5092), 11 states have internal predecessors, (5092), 0 states have call successors, (0), 0 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 19:44:08,593 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 19:44:08,593 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 19:44:08,593 INFO L175 Difference]: Start difference. First operand has 148 places, 201 transitions, 1478 flow. Second operand 11 states and 5092 transitions. [2022-12-13 19:44:08,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 382 transitions, 3507 flow [2022-12-13 19:44:08,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 382 transitions, 3491 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 19:44:08,925 INFO L231 Difference]: Finished difference. Result has 158 places, 283 transitions, 3033 flow [2022-12-13 19:44:08,926 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=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3033, PETRI_PLACES=158, PETRI_TRANSITIONS=283} [2022-12-13 19:44:08,926 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, 17 predicate places. [2022-12-13 19:44:08,926 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 283 transitions, 3033 flow [2022-12-13 19:44:08,926 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 19:44:08,926 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:44:08,926 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 19:44:08,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 19:44:08,927 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 19:44:08,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:44:08,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1045424194, now seen corresponding path program 1 times [2022-12-13 19:44:08,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:44:08,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932513220] [2022-12-13 19:44:08,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:44:08,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:44:08,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:09,407 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 19:44:09,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:44:09,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932513220] [2022-12-13 19:44:09,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932513220] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:44:09,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:44:09,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 19:44:09,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484157891] [2022-12-13 19:44:09,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:44:09,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 19:44:09,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:44:09,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 19:44:09,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:44:09,878 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 465 out of 1022 [2022-12-13 19:44:09,880 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 283 transitions, 3033 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 19:44:09,880 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:44:09,880 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 465 of 1022 [2022-12-13 19:44:09,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:44:18,325 INFO L130 PetriNetUnfolder]: 31624/55682 cut-off events. [2022-12-13 19:44:18,326 INFO L131 PetriNetUnfolder]: For 237871/247743 co-relation queries the response was YES. [2022-12-13 19:44:18,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181167 conditions, 55682 events. 31624/55682 cut-off events. For 237871/247743 co-relation queries the response was YES. Maximal size of possible extension queue 1550. Compared 506200 event pairs, 11182 based on Foata normal form. 225/49391 useless extension candidates. Maximal degree in co-relation 181135. Up to 35975 conditions per place. [2022-12-13 19:44:18,749 INFO L137 encePairwiseOnDemand]: 1015/1022 looper letters, 244 selfloop transitions, 25 changer transitions 0/337 dead transitions. [2022-12-13 19:44:18,749 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 337 transitions, 3940 flow [2022-12-13 19:44:18,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:44:18,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 19:44:18,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2866 transitions. [2022-12-13 19:44:18,753 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4673842139595564 [2022-12-13 19:44:18,753 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2866 transitions. [2022-12-13 19:44:18,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2866 transitions. [2022-12-13 19:44:18,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:44:18,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2866 transitions. [2022-12-13 19:44:18,757 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 19:44:18,760 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 19:44:18,760 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 19:44:18,761 INFO L175 Difference]: Start difference. First operand has 158 places, 283 transitions, 3033 flow. Second operand 6 states and 2866 transitions. [2022-12-13 19:44:18,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 337 transitions, 3940 flow [2022-12-13 19:44:20,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 337 transitions, 3796 flow, removed 64 selfloop flow, removed 4 redundant places. [2022-12-13 19:44:20,130 INFO L231 Difference]: Finished difference. Result has 164 places, 307 transitions, 3281 flow [2022-12-13 19:44:20,130 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1022, PETRI_DIFFERENCE_MINUEND_FLOW=2897, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3281, PETRI_PLACES=164, PETRI_TRANSITIONS=307} [2022-12-13 19:44:20,131 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, 23 predicate places. [2022-12-13 19:44:20,131 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 307 transitions, 3281 flow [2022-12-13 19:44:20,131 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 19:44:20,131 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:44:20,131 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 19:44:20,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 19:44:20,131 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 19:44:20,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:44:20,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1325938495, now seen corresponding path program 1 times [2022-12-13 19:44:20,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:44:20,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295330460] [2022-12-13 19:44:20,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:44:20,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:44:20,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:20,394 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 19:44:20,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:44:20,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295330460] [2022-12-13 19:44:20,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295330460] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:44:20,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:44:20,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 19:44:20,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915532239] [2022-12-13 19:44:20,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:44:20,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 19:44:20,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:44:20,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 19:44:20,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:44:20,850 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 458 out of 1022 [2022-12-13 19:44:20,852 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 307 transitions, 3281 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 19:44:20,852 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:44:20,852 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 458 of 1022 [2022-12-13 19:44:20,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:44:32,479 INFO L130 PetriNetUnfolder]: 49740/77650 cut-off events. [2022-12-13 19:44:32,479 INFO L131 PetriNetUnfolder]: For 329199/338138 co-relation queries the response was YES. [2022-12-13 19:44:32,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261900 conditions, 77650 events. 49740/77650 cut-off events. For 329199/338138 co-relation queries the response was YES. Maximal size of possible extension queue 1568. Compared 630982 event pairs, 12055 based on Foata normal form. 570/69132 useless extension candidates. Maximal degree in co-relation 261864. Up to 44287 conditions per place. [2022-12-13 19:44:33,142 INFO L137 encePairwiseOnDemand]: 1008/1022 looper letters, 282 selfloop transitions, 123 changer transitions 0/467 dead transitions. [2022-12-13 19:44:33,142 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 467 transitions, 5701 flow [2022-12-13 19:44:33,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:44:33,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 19:44:33,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2858 transitions. [2022-12-13 19:44:33,146 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4660795825179387 [2022-12-13 19:44:33,146 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2858 transitions. [2022-12-13 19:44:33,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2858 transitions. [2022-12-13 19:44:33,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:44:33,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2858 transitions. [2022-12-13 19:44:33,149 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 19:44:33,153 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 19:44:33,153 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 19:44:33,153 INFO L175 Difference]: Start difference. First operand has 164 places, 307 transitions, 3281 flow. Second operand 6 states and 2858 transitions. [2022-12-13 19:44:33,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 467 transitions, 5701 flow [2022-12-13 19:44:34,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 467 transitions, 5661 flow, removed 20 selfloop flow, removed 0 redundant places. [2022-12-13 19:44:34,562 INFO L231 Difference]: Finished difference. Result has 174 places, 419 transitions, 5289 flow [2022-12-13 19:44:34,562 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1022, PETRI_DIFFERENCE_MINUEND_FLOW=3241, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5289, PETRI_PLACES=174, PETRI_TRANSITIONS=419} [2022-12-13 19:44:34,563 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, 33 predicate places. [2022-12-13 19:44:34,563 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 419 transitions, 5289 flow [2022-12-13 19:44:34,563 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 19:44:34,563 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:44:34,563 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 19:44:34,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 19:44:34,563 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 19:44:34,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:44:34,563 INFO L85 PathProgramCache]: Analyzing trace with hash 841048296, now seen corresponding path program 3 times [2022-12-13 19:44:34,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:44:34,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669756236] [2022-12-13 19:44:34,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:44:34,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:44:34,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:34,695 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 19:44:34,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:44:34,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669756236] [2022-12-13 19:44:34,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669756236] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:44:34,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909631912] [2022-12-13 19:44:34,696 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 19:44:34,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:44:34,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c07f72-e659-41cd-a121-07f1a3fbbbfe/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:44:34,697 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c07f72-e659-41cd-a121-07f1a3fbbbfe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:44:34,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c07f72-e659-41cd-a121-07f1a3fbbbfe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 19:44:34,917 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-12-13 19:44:34,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:44:34,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 67 conjunts are in the unsatisfiable core [2022-12-13 19:44:34,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:44:34,979 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-12-13 19:44:34,980 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 19:44:35,017 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-13 19:44:35,017 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 19:44:35,052 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-12-13 19:44:35,052 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 19:44:35,181 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 19:44:35,209 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 19:44:35,245 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 19:44:35,281 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 19:44:35,396 INFO L321 Elim1Store]: treesize reduction 700, result has 6.4 percent of original size [2022-12-13 19:44:35,396 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 19:44:35,403 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 19:44:35,662 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 19:44:35,662 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:44:35,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909631912] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:44:35,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:44:35,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [7] total 17 [2022-12-13 19:44:35,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109837002] [2022-12-13 19:44:35,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:44:35,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 19:44:35,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:44:35,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 19:44:35,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2022-12-13 19:44:37,370 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 445 out of 1022 [2022-12-13 19:44:37,372 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 419 transitions, 5289 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 19:44:37,372 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:44:37,373 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 445 of 1022 [2022-12-13 19:44:37,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:44:51,378 INFO L130 PetriNetUnfolder]: 52194/80636 cut-off events. [2022-12-13 19:44:51,378 INFO L131 PetriNetUnfolder]: For 390492/398674 co-relation queries the response was YES. [2022-12-13 19:44:51,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293537 conditions, 80636 events. 52194/80636 cut-off events. For 390492/398674 co-relation queries the response was YES. Maximal size of possible extension queue 1811. Compared 649738 event pairs, 8669 based on Foata normal form. 269/72042 useless extension candidates. Maximal degree in co-relation 293496. Up to 34549 conditions per place. [2022-12-13 19:44:52,256 INFO L137 encePairwiseOnDemand]: 1010/1022 looper letters, 521 selfloop transitions, 32 changer transitions 0/616 dead transitions. [2022-12-13 19:44:52,256 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 616 transitions, 8520 flow [2022-12-13 19:44:52,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 19:44:52,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 19:44:52,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 5024 transitions. [2022-12-13 19:44:52,263 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44689557018324144 [2022-12-13 19:44:52,263 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 5024 transitions. [2022-12-13 19:44:52,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 5024 transitions. [2022-12-13 19:44:52,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:44:52,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 5024 transitions. [2022-12-13 19:44:52,268 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 19:44:52,274 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 19:44:52,275 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 19:44:52,275 INFO L175 Difference]: Start difference. First operand has 174 places, 419 transitions, 5289 flow. Second operand 11 states and 5024 transitions. [2022-12-13 19:44:52,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 616 transitions, 8520 flow [2022-12-13 19:44:58,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 616 transitions, 8168 flow, removed 176 selfloop flow, removed 0 redundant places. [2022-12-13 19:44:58,764 INFO L231 Difference]: Finished difference. Result has 189 places, 426 transitions, 5259 flow [2022-12-13 19:44:58,764 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1022, PETRI_DIFFERENCE_MINUEND_FLOW=5113, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5259, PETRI_PLACES=189, PETRI_TRANSITIONS=426} [2022-12-13 19:44:58,764 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, 48 predicate places. [2022-12-13 19:44:58,764 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 426 transitions, 5259 flow [2022-12-13 19:44:58,765 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 19:44:58,765 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:44:58,765 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 19:44:58,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c07f72-e659-41cd-a121-07f1a3fbbbfe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-13 19:44:58,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c07f72-e659-41cd-a121-07f1a3fbbbfe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-13 19:44:58,966 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 19:44:58,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:44:58,968 INFO L85 PathProgramCache]: Analyzing trace with hash -2124715590, now seen corresponding path program 1 times [2022-12-13 19:44:58,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:44:58,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872460640] [2022-12-13 19:44:58,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:44:58,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:44:59,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:59,122 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 19:44:59,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:44:59,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872460640] [2022-12-13 19:44:59,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872460640] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:44:59,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109451410] [2022-12-13 19:44:59,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:44:59,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:44:59,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c07f72-e659-41cd-a121-07f1a3fbbbfe/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:44:59,124 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c07f72-e659-41cd-a121-07f1a3fbbbfe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:44:59,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c07f72-e659-41cd-a121-07f1a3fbbbfe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 19:44:59,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:59,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 19:44:59,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:44:59,369 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 19:44:59,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:44:59,412 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 19:44:59,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109451410] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 19:44:59,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-13 19:44:59,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2022-12-13 19:44:59,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095416030] [2022-12-13 19:44:59,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:44:59,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 19:44:59,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:44:59,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 19:44:59,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-12-13 19:44:59,569 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 462 out of 1022 [2022-12-13 19:44:59,570 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 426 transitions, 5259 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 19:44:59,570 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:44:59,570 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 462 of 1022 [2022-12-13 19:44:59,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:45:09,104 INFO L130 PetriNetUnfolder]: 33284/58877 cut-off events. [2022-12-13 19:45:09,104 INFO L131 PetriNetUnfolder]: For 340076/349643 co-relation queries the response was YES. [2022-12-13 19:45:09,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222132 conditions, 58877 events. 33284/58877 cut-off events. For 340076/349643 co-relation queries the response was YES. Maximal size of possible extension queue 1298. Compared 529920 event pairs, 3004 based on Foata normal form. 627/53474 useless extension candidates. Maximal degree in co-relation 222085. Up to 35208 conditions per place. [2022-12-13 19:45:09,697 INFO L137 encePairwiseOnDemand]: 1011/1022 looper letters, 334 selfloop transitions, 28 changer transitions 15/461 dead transitions. [2022-12-13 19:45:09,697 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 461 transitions, 6177 flow [2022-12-13 19:45:09,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:45:09,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 19:45:09,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2848 transitions. [2022-12-13 19:45:09,701 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4644487932159165 [2022-12-13 19:45:09,701 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2848 transitions. [2022-12-13 19:45:09,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2848 transitions. [2022-12-13 19:45:09,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:45:09,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2848 transitions. [2022-12-13 19:45:09,704 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 19:45:09,707 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 19:45:09,708 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 19:45:09,708 INFO L175 Difference]: Start difference. First operand has 189 places, 426 transitions, 5259 flow. Second operand 6 states and 2848 transitions. [2022-12-13 19:45:09,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 461 transitions, 6177 flow [2022-12-13 19:45:11,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 461 transitions, 6139 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-12-13 19:45:11,289 INFO L231 Difference]: Finished difference. Result has 191 places, 410 transitions, 5126 flow [2022-12-13 19:45:11,289 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1022, PETRI_DIFFERENCE_MINUEND_FLOW=5105, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5126, PETRI_PLACES=191, PETRI_TRANSITIONS=410} [2022-12-13 19:45:11,289 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, 50 predicate places. [2022-12-13 19:45:11,289 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 410 transitions, 5126 flow [2022-12-13 19:45:11,290 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 19:45:11,290 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:45:11,290 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 19:45:11,294 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c07f72-e659-41cd-a121-07f1a3fbbbfe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 19:45:11,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c07f72-e659-41cd-a121-07f1a3fbbbfe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-13 19:45:11,491 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 19:45:11,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:45:11,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1435805318, now seen corresponding path program 1 times [2022-12-13 19:45:11,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:45:11,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378497094] [2022-12-13 19:45:11,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:45:11,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:45:11,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:12,169 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 19:45:12,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:45:12,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378497094] [2022-12-13 19:45:12,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378497094] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:45:12,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:45:12,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 19:45:12,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242362540] [2022-12-13 19:45:12,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:45:12,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 19:45:12,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:45:12,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 19:45:12,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-13 19:45:12,858 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 453 out of 1022 [2022-12-13 19:45:12,859 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 410 transitions, 5126 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 19:45:12,859 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:45:12,859 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 453 of 1022 [2022-12-13 19:45:12,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:45:24,242 INFO L130 PetriNetUnfolder]: 38653/65379 cut-off events. [2022-12-13 19:45:24,242 INFO L131 PetriNetUnfolder]: For 440709/458301 co-relation queries the response was YES. [2022-12-13 19:45:24,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252192 conditions, 65379 events. 38653/65379 cut-off events. For 440709/458301 co-relation queries the response was YES. Maximal size of possible extension queue 1685. Compared 574988 event pairs, 6088 based on Foata normal form. 750/58257 useless extension candidates. Maximal degree in co-relation 252143. Up to 23000 conditions per place. [2022-12-13 19:45:25,049 INFO L137 encePairwiseOnDemand]: 1010/1022 looper letters, 475 selfloop transitions, 85 changer transitions 0/636 dead transitions. [2022-12-13 19:45:25,049 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 636 transitions, 8730 flow [2022-12-13 19:45:25,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 19:45:25,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 19:45:25,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4203 transitions. [2022-12-13 19:45:25,057 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4569471624266145 [2022-12-13 19:45:25,057 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 4203 transitions. [2022-12-13 19:45:25,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 4203 transitions. [2022-12-13 19:45:25,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:45:25,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 4203 transitions. [2022-12-13 19:45:25,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 467.0) internal successors, (4203), 9 states have internal predecessors, (4203), 0 states have call successors, (0), 0 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 19:45:25,071 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 19:45:25,072 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 19:45:25,072 INFO L175 Difference]: Start difference. First operand has 191 places, 410 transitions, 5126 flow. Second operand 9 states and 4203 transitions. [2022-12-13 19:45:25,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 636 transitions, 8730 flow [2022-12-13 19:45:27,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 636 transitions, 8671 flow, removed 14 selfloop flow, removed 5 redundant places. [2022-12-13 19:45:27,288 INFO L231 Difference]: Finished difference. Result has 193 places, 422 transitions, 5584 flow [2022-12-13 19:45:27,288 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1022, PETRI_DIFFERENCE_MINUEND_FLOW=5084, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5584, PETRI_PLACES=193, PETRI_TRANSITIONS=422} [2022-12-13 19:45:27,289 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, 52 predicate places. [2022-12-13 19:45:27,289 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 422 transitions, 5584 flow [2022-12-13 19:45:27,289 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 19:45:27,289 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:45:27,289 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 19:45:27,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 19:45:27,289 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 19:45:27,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:45:27,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1386334042, now seen corresponding path program 2 times [2022-12-13 19:45:27,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:45:27,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724213673] [2022-12-13 19:45:27,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:45:27,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:45:27,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:28,094 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 19:45:28,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:45:28,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724213673] [2022-12-13 19:45:28,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724213673] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:45:28,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:45:28,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 19:45:28,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810264609] [2022-12-13 19:45:28,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:45:28,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 19:45:28,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:45:28,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 19:45:28,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-13 19:45:28,894 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 453 out of 1022 [2022-12-13 19:45:28,897 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 422 transitions, 5584 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 19:45:28,897 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:45:28,897 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 453 of 1022 [2022-12-13 19:45:28,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:45:43,035 INFO L130 PetriNetUnfolder]: 46115/80453 cut-off events. [2022-12-13 19:45:43,035 INFO L131 PetriNetUnfolder]: For 508224/523320 co-relation queries the response was YES. [2022-12-13 19:45:43,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307940 conditions, 80453 events. 46115/80453 cut-off events. For 508224/523320 co-relation queries the response was YES. Maximal size of possible extension queue 2343. Compared 758787 event pairs, 6178 based on Foata normal form. 831/72659 useless extension candidates. Maximal degree in co-relation 307890. Up to 40790 conditions per place. [2022-12-13 19:45:43,922 INFO L137 encePairwiseOnDemand]: 1011/1022 looper letters, 304 selfloop transitions, 188 changer transitions 0/568 dead transitions. [2022-12-13 19:45:43,923 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 568 transitions, 7961 flow [2022-12-13 19:45:43,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 19:45:43,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 19:45:43,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4198 transitions. [2022-12-13 19:45:43,927 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45640356599260706 [2022-12-13 19:45:43,927 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 4198 transitions. [2022-12-13 19:45:43,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 4198 transitions. [2022-12-13 19:45:43,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:45:43,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 4198 transitions. [2022-12-13 19:45:43,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 466.44444444444446) internal successors, (4198), 9 states have internal predecessors, (4198), 0 states have call successors, (0), 0 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 19:45:43,936 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 19:45:43,937 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 19:45:43,937 INFO L175 Difference]: Start difference. First operand has 193 places, 422 transitions, 5584 flow. Second operand 9 states and 4198 transitions. [2022-12-13 19:45:43,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 568 transitions, 7961 flow [2022-12-13 19:45:46,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 568 transitions, 7926 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 19:45:46,992 INFO L231 Difference]: Finished difference. Result has 199 places, 434 transitions, 6290 flow [2022-12-13 19:45:46,993 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1022, PETRI_DIFFERENCE_MINUEND_FLOW=5555, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6290, PETRI_PLACES=199, PETRI_TRANSITIONS=434} [2022-12-13 19:45:46,993 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, 58 predicate places. [2022-12-13 19:45:46,993 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 434 transitions, 6290 flow [2022-12-13 19:45:46,993 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 19:45:46,993 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:45:46,993 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 19:45:46,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 19:45:46,994 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 19:45:46,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:45:46,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1577229572, now seen corresponding path program 1 times [2022-12-13 19:45:46,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:45:46,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152160448] [2022-12-13 19:45:46,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:45:46,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:45:47,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:47,264 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 19:45:47,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:45:47,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152160448] [2022-12-13 19:45:47,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152160448] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:45:47,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:45:47,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 19:45:47,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983613848] [2022-12-13 19:45:47,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:45:47,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 19:45:47,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:45:47,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 19:45:47,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:45:47,798 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 465 out of 1022 [2022-12-13 19:45:47,800 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 434 transitions, 6290 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 19:45:47,800 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:45:47,800 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 465 of 1022 [2022-12-13 19:45:47,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:46:00,898 INFO L130 PetriNetUnfolder]: 44556/76719 cut-off events. [2022-12-13 19:46:00,898 INFO L131 PetriNetUnfolder]: For 536054/550939 co-relation queries the response was YES. [2022-12-13 19:46:01,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299091 conditions, 76719 events. 44556/76719 cut-off events. For 536054/550939 co-relation queries the response was YES. Maximal size of possible extension queue 2281. Compared 713325 event pairs, 15295 based on Foata normal form. 403/68483 useless extension candidates. Maximal degree in co-relation 299039. Up to 53953 conditions per place. [2022-12-13 19:46:01,734 INFO L137 encePairwiseOnDemand]: 1017/1022 looper letters, 337 selfloop transitions, 0 changer transitions 32/449 dead transitions. [2022-12-13 19:46:01,734 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 449 transitions, 7050 flow [2022-12-13 19:46:01,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:46:01,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 19:46:01,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2846 transitions. [2022-12-13 19:46:01,737 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46412263535551207 [2022-12-13 19:46:01,737 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2846 transitions. [2022-12-13 19:46:01,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2846 transitions. [2022-12-13 19:46:01,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:46:01,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2846 transitions. [2022-12-13 19:46:01,740 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 19:46:01,743 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 19:46:01,743 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 19:46:01,743 INFO L175 Difference]: Start difference. First operand has 199 places, 434 transitions, 6290 flow. Second operand 6 states and 2846 transitions. [2022-12-13 19:46:01,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 449 transitions, 7050 flow [2022-12-13 19:46:04,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 449 transitions, 6796 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-12-13 19:46:04,838 INFO L231 Difference]: Finished difference. Result has 198 places, 417 transitions, 5916 flow [2022-12-13 19:46:04,838 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1022, PETRI_DIFFERENCE_MINUEND_FLOW=6034, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5916, PETRI_PLACES=198, PETRI_TRANSITIONS=417} [2022-12-13 19:46:04,838 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, 57 predicate places. [2022-12-13 19:46:04,838 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 417 transitions, 5916 flow [2022-12-13 19:46:04,839 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 19:46:04,839 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:46:04,839 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 19:46:04,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 19:46:04,839 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 19:46:04,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:46:04,839 INFO L85 PathProgramCache]: Analyzing trace with hash -416325165, now seen corresponding path program 3 times [2022-12-13 19:46:04,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:46:04,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751193117] [2022-12-13 19:46:04,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:46:04,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:46:04,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:04,968 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 19:46:04,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:46:04,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751193117] [2022-12-13 19:46:04,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751193117] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:46:04,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345061429] [2022-12-13 19:46:04,969 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 19:46:04,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:46:04,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c07f72-e659-41cd-a121-07f1a3fbbbfe/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:46:04,970 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c07f72-e659-41cd-a121-07f1a3fbbbfe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:46:04,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c07f72-e659-41cd-a121-07f1a3fbbbfe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 19:46:05,156 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-12-13 19:46:05,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:46:05,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 80 conjunts are in the unsatisfiable core [2022-12-13 19:46:05,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:46:05,189 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-12-13 19:46:05,189 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 19:46:05,207 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-13 19:46:05,207 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 19:46:05,229 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-12-13 19:46:05,229 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 19:46:05,304 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 19:46:05,319 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 19:46:05,342 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:46:05,342 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 19:46:05,367 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:46:05,367 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 19:46:05,449 INFO L321 Elim1Store]: treesize reduction 700, result has 6.4 percent of original size [2022-12-13 19:46:05,449 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 19:46:05,455 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 19:46:05,515 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 19:46:05,516 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:46:05,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345061429] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:46:05,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:46:05,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 16 [2022-12-13 19:46:05,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554496801] [2022-12-13 19:46:05,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:46:05,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 19:46:05,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:46:05,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 19:46:05,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-12-13 19:46:07,564 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 19:46:09,618 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 19:46:12,006 WARN L539 Checker$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 19:46:14,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 19:46:17,051 WARN L539 Checker$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 19:46:20,159 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 438 out of 1022 [2022-12-13 19:46:20,161 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 417 transitions, 5916 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 19:46:20,161 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:46:20,161 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 438 of 1022 [2022-12-13 19:46:20,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:46:24,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 19:46:27,848 WARN L539 Checker$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 19:46:45,392 INFO L130 PetriNetUnfolder]: 84843/127101 cut-off events. [2022-12-13 19:46:45,392 INFO L131 PetriNetUnfolder]: For 585153/595479 co-relation queries the response was YES. [2022-12-13 19:46:46,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 459862 conditions, 127101 events. 84843/127101 cut-off events. For 585153/595479 co-relation queries the response was YES. Maximal size of possible extension queue 3787. Compared 1055049 event pairs, 15859 based on Foata normal form. 2634/115659 useless extension candidates. Maximal degree in co-relation 459810. Up to 44385 conditions per place. [2022-12-13 19:46:46,949 INFO L137 encePairwiseOnDemand]: 1009/1022 looper letters, 393 selfloop transitions, 85 changer transitions 2/537 dead transitions. [2022-12-13 19:46:46,950 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 537 transitions, 7866 flow [2022-12-13 19:46:46,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 19:46:46,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 19:46:46,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 4936 transitions. [2022-12-13 19:46:46,955 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.439067781533535 [2022-12-13 19:46:46,955 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 4936 transitions. [2022-12-13 19:46:46,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 4936 transitions. [2022-12-13 19:46:46,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:46:46,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 4936 transitions. [2022-12-13 19:46:46,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 448.72727272727275) internal successors, (4936), 11 states have internal predecessors, (4936), 0 states have call successors, (0), 0 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 19:46:46,965 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 19:46:46,966 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 19:46:46,966 INFO L175 Difference]: Start difference. First operand has 198 places, 417 transitions, 5916 flow. Second operand 11 states and 4936 transitions. [2022-12-13 19:46:46,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 537 transitions, 7866 flow [2022-12-13 19:46:53,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 537 transitions, 7696 flow, removed 39 selfloop flow, removed 6 redundant places. [2022-12-13 19:46:53,714 INFO L231 Difference]: Finished difference. Result has 186 places, 430 transitions, 6282 flow [2022-12-13 19:46:53,714 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1022, PETRI_DIFFERENCE_MINUEND_FLOW=5751, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6282, PETRI_PLACES=186, PETRI_TRANSITIONS=430} [2022-12-13 19:46:53,715 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, 45 predicate places. [2022-12-13 19:46:53,715 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 430 transitions, 6282 flow [2022-12-13 19:46:53,715 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 19:46:53,715 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:46:53,715 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 19:46:53,720 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c07f72-e659-41cd-a121-07f1a3fbbbfe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 19:46:53,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c07f72-e659-41cd-a121-07f1a3fbbbfe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:46:53,917 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 19:46:53,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:46:53,918 INFO L85 PathProgramCache]: Analyzing trace with hash -453602498, now seen corresponding path program 1 times [2022-12-13 19:46:53,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:46:53,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847667312] [2022-12-13 19:46:53,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:46:53,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:46:54,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:54,130 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 19:46:54,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:46:54,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847667312] [2022-12-13 19:46:54,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847667312] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:46:54,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364639964] [2022-12-13 19:46:54,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:46:54,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:46:54,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c07f72-e659-41cd-a121-07f1a3fbbbfe/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:46:54,131 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c07f72-e659-41cd-a121-07f1a3fbbbfe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:46:54,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c07f72-e659-41cd-a121-07f1a3fbbbfe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 19:46:54,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:54,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 690 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 19:46:54,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:46:54,426 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 19:46:54,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:46:54,503 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 19:46:54,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364639964] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:46:54,503 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:46:54,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2022-12-13 19:46:54,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746199572] [2022-12-13 19:46:54,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:46:54,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 19:46:54,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:46:54,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 19:46:54,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2022-12-13 19:46:55,198 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 462 out of 1022 [2022-12-13 19:46:55,201 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 430 transitions, 6282 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 19:46:55,201 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:46:55,201 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 462 of 1022 [2022-12-13 19:46:55,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:47:28,312 INFO L130 PetriNetUnfolder]: 109057/188989 cut-off events. [2022-12-13 19:47:28,312 INFO L131 PetriNetUnfolder]: For 1531972/1564841 co-relation queries the response was YES. [2022-12-13 19:47:29,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 764085 conditions, 188989 events. 109057/188989 cut-off events. For 1531972/1564841 co-relation queries the response was YES. Maximal size of possible extension queue 6766. Compared 1992249 event pairs, 30630 based on Foata normal form. 977/168639 useless extension candidates. Maximal degree in co-relation 764035. Up to 54836 conditions per place. [2022-12-13 19:47:30,653 INFO L137 encePairwiseOnDemand]: 1010/1022 looper letters, 945 selfloop transitions, 76 changer transitions 0/1095 dead transitions. [2022-12-13 19:47:30,653 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 1095 transitions, 18557 flow [2022-12-13 19:47:30,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 19:47:30,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-13 19:47:30,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 6642 transitions. [2022-12-13 19:47:30,659 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4642158233156276 [2022-12-13 19:47:30,659 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 6642 transitions. [2022-12-13 19:47:30,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 6642 transitions. [2022-12-13 19:47:30,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:47:30,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 6642 transitions. [2022-12-13 19:47:30,665 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 19:47:30,671 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 19:47:30,673 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 19:47:30,673 INFO L175 Difference]: Start difference. First operand has 186 places, 430 transitions, 6282 flow. Second operand 14 states and 6642 transitions. [2022-12-13 19:47:30,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 1095 transitions, 18557 flow [2022-12-13 19:47:59,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 1095 transitions, 18254 flow, removed 75 selfloop flow, removed 9 redundant places. [2022-12-13 19:47:59,343 INFO L231 Difference]: Finished difference. Result has 194 places, 497 transitions, 7810 flow [2022-12-13 19:47:59,343 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1022, PETRI_DIFFERENCE_MINUEND_FLOW=6161, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=7810, PETRI_PLACES=194, PETRI_TRANSITIONS=497} [2022-12-13 19:47:59,343 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, 53 predicate places. [2022-12-13 19:47:59,343 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 497 transitions, 7810 flow [2022-12-13 19:47:59,344 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 19:47:59,344 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:47:59,344 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 19:47:59,350 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c07f72-e659-41cd-a121-07f1a3fbbbfe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 19:47:59,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c07f72-e659-41cd-a121-07f1a3fbbbfe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:47:59,546 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 19:47:59,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:47:59,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1955652518, now seen corresponding path program 2 times [2022-12-13 19:47:59,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:47:59,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932251344] [2022-12-13 19:47:59,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:47:59,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:47:59,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:00,994 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 19:48:00,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:48:00,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932251344] [2022-12-13 19:48:00,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932251344] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:48:00,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275348390] [2022-12-13 19:48:00,994 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 19:48:00,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:48:00,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c07f72-e659-41cd-a121-07f1a3fbbbfe/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:48:00,995 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c07f72-e659-41cd-a121-07f1a3fbbbfe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:48:00,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c07f72-e659-41cd-a121-07f1a3fbbbfe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 19:48:01,230 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 19:48:01,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:48:01,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 61 conjunts are in the unsatisfiable core [2022-12-13 19:48:01,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:48:01,266 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-12-13 19:48:01,266 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 19:48:01,284 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-13 19:48:01,285 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 19:48:01,318 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-12-13 19:48:01,318 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 19:48:01,459 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 19:48:01,489 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 19:48:01,516 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:48:01,516 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 19:48:01,552 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:48:01,552 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 19:48:01,679 INFO L321 Elim1Store]: treesize reduction 700, result has 6.4 percent of original size [2022-12-13 19:48:01,680 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 19:48:01,685 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 19:48:01,727 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 19:48:01,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:48:03,702 INFO L321 Elim1Store]: treesize reduction 740, result has 12.2 percent of original size [2022-12-13 19:48:03,702 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 19:48:03,715 INFO L321 Elim1Store]: treesize reduction 216, result has 0.5 percent of original size [2022-12-13 19:48:03,715 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 19:48:03,722 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 19:48:03,726 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 19:48:03,766 INFO L321 Elim1Store]: treesize reduction 842, result has 0.1 percent of original size [2022-12-13 19:48:03,767 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 19:48:03,786 INFO L321 Elim1Store]: treesize reduction 842, result has 0.1 percent of original size [2022-12-13 19:48:03,786 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 19:48:03,809 INFO L321 Elim1Store]: treesize reduction 842, result has 0.1 percent of original size [2022-12-13 19:48:03,809 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 19:48:04,011 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 1 refuted. 3 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-13 19:48:04,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275348390] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:48:04,011 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:48:04,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 25 [2022-12-13 19:48:04,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824755563] [2022-12-13 19:48:04,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:48:04,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-13 19:48:04,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:48:04,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-13 19:48:04,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=561, Unknown=22, NotChecked=0, Total=702 [2022-12-13 19:48:11,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 19:48:19,779 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 354 out of 1022 [2022-12-13 19:48:19,782 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 497 transitions, 7810 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 19:48:19,782 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:48:19,782 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 354 of 1022 [2022-12-13 19:48:19,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand