./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-race-challenges/per-thread-struct-tid.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 9bd2c7ff 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_da823133-26f0-47dc-a529-37965aac5c4e/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da823133-26f0-47dc-a529-37965aac5c4e/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da823133-26f0-47dc-a529-37965aac5c4e/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da823133-26f0-47dc-a529-37965aac5c4e/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-race-challenges/per-thread-struct-tid.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da823133-26f0-47dc-a529-37965aac5c4e/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da823133-26f0-47dc-a529-37965aac5c4e/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --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 da100b5cb95d7325be7357bb16aa7526e66fa3d3a90ac0a0850ac9736c0f81ee --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:35:50,127 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:35:50,236 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da823133-26f0-47dc-a529-37965aac5c4e/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-19 07:35:50,246 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:35:50,247 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:35:50,309 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:35:50,309 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:35:50,310 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:35:50,311 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:35:50,316 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:35:50,317 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:35:50,317 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:35:50,318 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:35:50,320 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:35:50,320 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:35:50,320 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:35:50,321 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:35:50,321 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:35:50,321 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:35:50,322 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:35:50,322 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:35:50,323 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:35:50,323 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-19 07:35:50,323 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:35:50,324 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:35:50,324 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:35:50,324 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:35:50,325 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:35:50,326 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:35:50,326 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:35:50,327 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:35:50,328 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:35:50,328 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:35:50,328 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:35:50,328 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:35:50,328 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:35:50,341 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:35:50,342 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:35:50,342 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:35:50,342 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:35:50,342 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:35:50,345 INFO L153 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_da823133-26f0-47dc-a529-37965aac5c4e/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da823133-26f0-47dc-a529-37965aac5c4e/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da100b5cb95d7325be7357bb16aa7526e66fa3d3a90ac0a0850ac9736c0f81ee [2023-11-19 07:35:50,641 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:35:50,670 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:35:50,673 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:35:50,674 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:35:50,675 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:35:50,676 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da823133-26f0-47dc-a529-37965aac5c4e/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-race-challenges/per-thread-struct-tid.i [2023-11-19 07:35:53,912 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:35:54,296 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:35:54,302 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da823133-26f0-47dc-a529-37965aac5c4e/sv-benchmarks/c/pthread-race-challenges/per-thread-struct-tid.i [2023-11-19 07:35:54,329 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da823133-26f0-47dc-a529-37965aac5c4e/bin/uautomizer-verify-uCwYo4JHxu/data/8329e177c/e6742f9ca99a41c28e853a4291b9b593/FLAG3a15b5504 [2023-11-19 07:35:54,344 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da823133-26f0-47dc-a529-37965aac5c4e/bin/uautomizer-verify-uCwYo4JHxu/data/8329e177c/e6742f9ca99a41c28e853a4291b9b593 [2023-11-19 07:35:54,346 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:35:54,348 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:35:54,350 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:35:54,350 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:35:54,356 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:35:54,357 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:35:54" (1/1) ... [2023-11-19 07:35:54,358 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c0ceeac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:54, skipping insertion in model container [2023-11-19 07:35:54,358 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:35:54" (1/1) ... [2023-11-19 07:35:54,412 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:35:54,608 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 07:35:54,934 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:35:54,944 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:35:54,960 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 07:35:54,989 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:35:55,135 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:35:55,143 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:35:55,144 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:55 WrapperNode [2023-11-19 07:35:55,144 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:35:55,145 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:35:55,145 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:35:55,145 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:35:55,153 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:55" (1/1) ... [2023-11-19 07:35:55,186 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:55" (1/1) ... [2023-11-19 07:35:55,229 INFO L138 Inliner]: procedures = 264, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 76 [2023-11-19 07:35:55,230 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:35:55,230 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:35:55,231 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:35:55,231 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:35:55,241 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:55" (1/1) ... [2023-11-19 07:35:55,241 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:55" (1/1) ... [2023-11-19 07:35:55,261 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:55" (1/1) ... [2023-11-19 07:35:55,262 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:55" (1/1) ... [2023-11-19 07:35:55,272 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:55" (1/1) ... [2023-11-19 07:35:55,280 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:55" (1/1) ... [2023-11-19 07:35:55,282 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:55" (1/1) ... [2023-11-19 07:35:55,284 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:55" (1/1) ... [2023-11-19 07:35:55,287 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:35:55,288 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:35:55,288 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:35:55,288 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:35:55,297 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:55" (1/1) ... [2023-11-19 07:35:55,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:35:55,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da823133-26f0-47dc-a529-37965aac5c4e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:35:55,341 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da823133-26f0-47dc-a529-37965aac5c4e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:35:55,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da823133-26f0-47dc-a529-37965aac5c4e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:35:55,377 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 07:35:55,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:35:55,378 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:35:55,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:35:55,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:35:55,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 07:35:55,379 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2023-11-19 07:35:55,379 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2023-11-19 07:35:55,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:35:55,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:35:55,383 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:35:55,590 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:35:55,593 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:35:55,966 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:35:55,976 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:35:55,977 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 07:35:55,981 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:35:55 BoogieIcfgContainer [2023-11-19 07:35:55,981 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:35:55,984 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:35:55,985 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:35:55,988 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:35:55,989 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:35:54" (1/3) ... [2023-11-19 07:35:55,990 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@824702e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:35:55, skipping insertion in model container [2023-11-19 07:35:55,990 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:55" (2/3) ... [2023-11-19 07:35:55,990 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@824702e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:35:55, skipping insertion in model container [2023-11-19 07:35:55,991 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:35:55" (3/3) ... [2023-11-19 07:35:55,992 INFO L112 eAbstractionObserver]: Analyzing ICFG per-thread-struct-tid.i [2023-11-19 07:35:56,002 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:35:56,014 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:35:56,015 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2023-11-19 07:35:56,015 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:35:56,105 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-19 07:35:56,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 101 transitions, 209 flow [2023-11-19 07:35:56,215 INFO L124 PetriNetUnfolderBase]: 6/144 cut-off events. [2023-11-19 07:35:56,216 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:35:56,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 144 events. 6/144 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 228 event pairs, 0 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 64. Up to 4 conditions per place. [2023-11-19 07:35:56,220 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 101 transitions, 209 flow [2023-11-19 07:35:56,226 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 101 transitions, 209 flow [2023-11-19 07:35:56,230 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:35:56,239 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 100 places, 101 transitions, 209 flow [2023-11-19 07:35:56,242 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 100 places, 101 transitions, 209 flow [2023-11-19 07:35:56,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 101 transitions, 209 flow [2023-11-19 07:35:56,285 INFO L124 PetriNetUnfolderBase]: 6/144 cut-off events. [2023-11-19 07:35:56,285 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:35:56,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 144 events. 6/144 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 228 event pairs, 0 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 64. Up to 4 conditions per place. [2023-11-19 07:35:56,289 INFO L119 LiptonReduction]: Number of co-enabled transitions 1568 [2023-11-19 07:35:58,988 INFO L134 LiptonReduction]: Checked pairs total: 6153 [2023-11-19 07:35:58,988 INFO L136 LiptonReduction]: Total number of compositions: 70 [2023-11-19 07:35:59,016 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:35:59,023 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=LoopHeads, 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;@6487eb07, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:35:59,025 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-19 07:35:59,036 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:35:59,036 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2023-11-19 07:35:59,036 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:35:59,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:59,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:59,038 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2023-11-19 07:35:59,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:59,043 INFO L85 PathProgramCache]: Analyzing trace with hash -325229742, now seen corresponding path program 1 times [2023-11-19 07:35:59,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:59,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210841715] [2023-11-19 07:35:59,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:59,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:59,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:59,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:59,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:59,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210841715] [2023-11-19 07:35:59,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210841715] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:59,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:59,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:35:59,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861911134] [2023-11-19 07:35:59,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:59,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:35:59,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:59,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:35:59,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:36:00,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 171 [2023-11-19 07:36:00,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 38 transitions, 83 flow. Second operand has 6 states, 6 states have (on average 67.16666666666667) internal successors, (403), 6 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:00,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:00,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 171 [2023-11-19 07:36:00,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:00,435 INFO L124 PetriNetUnfolderBase]: 135/359 cut-off events. [2023-11-19 07:36:00,435 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:36:00,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 685 conditions, 359 events. 135/359 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1545 event pairs, 91 based on Foata normal form. 0/329 useless extension candidates. Maximal degree in co-relation 629. Up to 281 conditions per place. [2023-11-19 07:36:00,444 INFO L140 encePairwiseOnDemand]: 160/171 looper letters, 37 selfloop transitions, 21 changer transitions 0/65 dead transitions. [2023-11-19 07:36:00,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 65 transitions, 253 flow [2023-11-19 07:36:00,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:36:00,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:36:00,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 456 transitions. [2023-11-19 07:36:00,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2023-11-19 07:36:00,493 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 456 transitions. [2023-11-19 07:36:00,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 456 transitions. [2023-11-19 07:36:00,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:00,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 456 transitions. [2023-11-19 07:36:00,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 76.0) internal successors, (456), 6 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:00,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:00,516 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:00,518 INFO L175 Difference]: Start difference. First operand has 40 places, 38 transitions, 83 flow. Second operand 6 states and 456 transitions. [2023-11-19 07:36:00,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 65 transitions, 253 flow [2023-11-19 07:36:00,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 65 transitions, 253 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:36:00,525 INFO L231 Difference]: Finished difference. Result has 48 places, 57 transitions, 205 flow [2023-11-19 07:36:00,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=205, PETRI_PLACES=48, PETRI_TRANSITIONS=57} [2023-11-19 07:36:00,530 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 8 predicate places. [2023-11-19 07:36:00,531 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 57 transitions, 205 flow [2023-11-19 07:36:00,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 67.16666666666667) internal successors, (403), 6 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:00,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:00,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:00,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:36:00,532 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2023-11-19 07:36:00,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:00,533 INFO L85 PathProgramCache]: Analyzing trace with hash -951007611, now seen corresponding path program 1 times [2023-11-19 07:36:00,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:00,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392178555] [2023-11-19 07:36:00,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:00,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:00,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:00,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:00,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:00,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392178555] [2023-11-19 07:36:00,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392178555] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:00,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:00,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:36:00,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3750750] [2023-11-19 07:36:00,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:00,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:36:00,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:00,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:36:00,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:36:00,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 171 [2023-11-19 07:36:00,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 57 transitions, 205 flow. Second operand has 4 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:00,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:00,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 171 [2023-11-19 07:36:00,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:00,799 INFO L124 PetriNetUnfolderBase]: 48/206 cut-off events. [2023-11-19 07:36:00,800 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-19 07:36:00,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 423 conditions, 206 events. 48/206 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 819 event pairs, 4 based on Foata normal form. 0/184 useless extension candidates. Maximal degree in co-relation 361. Up to 54 conditions per place. [2023-11-19 07:36:00,803 INFO L140 encePairwiseOnDemand]: 166/171 looper letters, 17 selfloop transitions, 2 changer transitions 2/64 dead transitions. [2023-11-19 07:36:00,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 64 transitions, 264 flow [2023-11-19 07:36:00,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:36:00,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:36:00,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 369 transitions. [2023-11-19 07:36:00,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5394736842105263 [2023-11-19 07:36:00,806 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 369 transitions. [2023-11-19 07:36:00,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 369 transitions. [2023-11-19 07:36:00,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:00,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 369 transitions. [2023-11-19 07:36:00,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 92.25) internal successors, (369), 4 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:00,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:00,811 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:00,811 INFO L175 Difference]: Start difference. First operand has 48 places, 57 transitions, 205 flow. Second operand 4 states and 369 transitions. [2023-11-19 07:36:00,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 64 transitions, 264 flow [2023-11-19 07:36:00,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 64 transitions, 264 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:36:00,817 INFO L231 Difference]: Finished difference. Result has 53 places, 57 transitions, 217 flow [2023-11-19 07:36:00,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=217, PETRI_PLACES=53, PETRI_TRANSITIONS=57} [2023-11-19 07:36:00,818 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 13 predicate places. [2023-11-19 07:36:00,818 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 57 transitions, 217 flow [2023-11-19 07:36:00,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:00,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:00,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:00,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:36:00,820 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2023-11-19 07:36:00,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:00,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1460422206, now seen corresponding path program 1 times [2023-11-19 07:36:00,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:00,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883896929] [2023-11-19 07:36:00,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:00,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:00,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:01,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:01,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:01,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883896929] [2023-11-19 07:36:01,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883896929] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:01,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:01,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:36:01,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133414220] [2023-11-19 07:36:01,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:01,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:36:01,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:01,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:36:01,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:36:01,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 171 [2023-11-19 07:36:01,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 57 transitions, 217 flow. Second operand has 6 states, 6 states have (on average 73.5) internal successors, (441), 6 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:01,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:01,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 171 [2023-11-19 07:36:01,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:01,624 INFO L124 PetriNetUnfolderBase]: 193/496 cut-off events. [2023-11-19 07:36:01,625 INFO L125 PetriNetUnfolderBase]: For 122/126 co-relation queries the response was YES. [2023-11-19 07:36:01,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1267 conditions, 496 events. 193/496 cut-off events. For 122/126 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2280 event pairs, 39 based on Foata normal form. 0/453 useless extension candidates. Maximal degree in co-relation 1189. Up to 339 conditions per place. [2023-11-19 07:36:01,631 INFO L140 encePairwiseOnDemand]: 153/171 looper letters, 68 selfloop transitions, 57 changer transitions 5/137 dead transitions. [2023-11-19 07:36:01,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 137 transitions, 723 flow [2023-11-19 07:36:01,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:36:01,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:36:01,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 537 transitions. [2023-11-19 07:36:01,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5233918128654971 [2023-11-19 07:36:01,634 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 537 transitions. [2023-11-19 07:36:01,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 537 transitions. [2023-11-19 07:36:01,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:01,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 537 transitions. [2023-11-19 07:36:01,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 89.5) internal successors, (537), 6 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:01,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:01,641 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:01,641 INFO L175 Difference]: Start difference. First operand has 53 places, 57 transitions, 217 flow. Second operand 6 states and 537 transitions. [2023-11-19 07:36:01,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 137 transitions, 723 flow [2023-11-19 07:36:01,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 137 transitions, 691 flow, removed 10 selfloop flow, removed 3 redundant places. [2023-11-19 07:36:01,653 INFO L231 Difference]: Finished difference. Result has 58 places, 108 transitions, 561 flow [2023-11-19 07:36:01,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=561, PETRI_PLACES=58, PETRI_TRANSITIONS=108} [2023-11-19 07:36:01,655 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 18 predicate places. [2023-11-19 07:36:01,655 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 108 transitions, 561 flow [2023-11-19 07:36:01,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.5) internal successors, (441), 6 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:01,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:01,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:01,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:36:01,661 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2023-11-19 07:36:01,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:01,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1174901276, now seen corresponding path program 1 times [2023-11-19 07:36:01,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:01,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264161805] [2023-11-19 07:36:01,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:01,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:01,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:02,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:36:02,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:02,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264161805] [2023-11-19 07:36:02,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264161805] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:02,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:02,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:36:02,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247523822] [2023-11-19 07:36:02,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:02,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:36:02,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:02,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:36:02,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:36:02,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 171 [2023-11-19 07:36:02,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 108 transitions, 561 flow. Second operand has 6 states, 6 states have (on average 72.83333333333333) internal successors, (437), 6 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:02,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:02,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 171 [2023-11-19 07:36:02,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:02,585 INFO L124 PetriNetUnfolderBase]: 200/559 cut-off events. [2023-11-19 07:36:02,585 INFO L125 PetriNetUnfolderBase]: For 328/340 co-relation queries the response was YES. [2023-11-19 07:36:02,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1814 conditions, 559 events. 200/559 cut-off events. For 328/340 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2819 event pairs, 43 based on Foata normal form. 1/538 useless extension candidates. Maximal degree in co-relation 1725. Up to 369 conditions per place. [2023-11-19 07:36:02,592 INFO L140 encePairwiseOnDemand]: 160/171 looper letters, 87 selfloop transitions, 29 changer transitions 0/142 dead transitions. [2023-11-19 07:36:02,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 142 transitions, 967 flow [2023-11-19 07:36:02,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:36:02,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:36:02,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 477 transitions. [2023-11-19 07:36:02,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4649122807017544 [2023-11-19 07:36:02,596 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 477 transitions. [2023-11-19 07:36:02,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 477 transitions. [2023-11-19 07:36:02,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:02,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 477 transitions. [2023-11-19 07:36:02,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 79.5) internal successors, (477), 6 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:02,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:02,602 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:02,603 INFO L175 Difference]: Start difference. First operand has 58 places, 108 transitions, 561 flow. Second operand 6 states and 477 transitions. [2023-11-19 07:36:02,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 142 transitions, 967 flow [2023-11-19 07:36:02,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 142 transitions, 931 flow, removed 18 selfloop flow, removed 0 redundant places. [2023-11-19 07:36:02,615 INFO L231 Difference]: Finished difference. Result has 67 places, 132 transitions, 807 flow [2023-11-19 07:36:02,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=531, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=807, PETRI_PLACES=67, PETRI_TRANSITIONS=132} [2023-11-19 07:36:02,616 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 27 predicate places. [2023-11-19 07:36:02,617 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 132 transitions, 807 flow [2023-11-19 07:36:02,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.83333333333333) internal successors, (437), 6 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:02,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:02,618 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2023-11-19 07:36:02,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:36:02,618 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2023-11-19 07:36:02,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:02,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1829356559, now seen corresponding path program 1 times [2023-11-19 07:36:02,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:02,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499043469] [2023-11-19 07:36:02,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:02,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:02,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:36:02,649 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:36:02,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:36:02,689 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:36:02,689 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:36:02,691 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2023-11-19 07:36:02,693 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (5 of 7 remaining) [2023-11-19 07:36:02,693 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (4 of 7 remaining) [2023-11-19 07:36:02,694 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (3 of 7 remaining) [2023-11-19 07:36:02,694 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (2 of 7 remaining) [2023-11-19 07:36:02,694 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 7 remaining) [2023-11-19 07:36:02,694 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 7 remaining) [2023-11-19 07:36:02,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:36:02,695 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-19 07:36:02,698 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:36:02,698 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 07:36:02,723 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 07:36:02,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 119 transitions, 254 flow [2023-11-19 07:36:02,770 INFO L124 PetriNetUnfolderBase]: 11/263 cut-off events. [2023-11-19 07:36:02,770 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 07:36:02,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 263 events. 11/263 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 507 event pairs, 0 based on Foata normal form. 0/232 useless extension candidates. Maximal degree in co-relation 146. Up to 8 conditions per place. [2023-11-19 07:36:02,772 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 119 transitions, 254 flow [2023-11-19 07:36:02,774 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 119 places, 119 transitions, 254 flow [2023-11-19 07:36:02,774 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:36:02,774 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 119 places, 119 transitions, 254 flow [2023-11-19 07:36:02,775 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 119 places, 119 transitions, 254 flow [2023-11-19 07:36:02,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 119 transitions, 254 flow [2023-11-19 07:36:02,811 INFO L124 PetriNetUnfolderBase]: 11/263 cut-off events. [2023-11-19 07:36:02,811 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 07:36:02,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 263 events. 11/263 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 507 event pairs, 0 based on Foata normal form. 0/232 useless extension candidates. Maximal degree in co-relation 146. Up to 8 conditions per place. [2023-11-19 07:36:02,818 INFO L119 LiptonReduction]: Number of co-enabled transitions 4640 [2023-11-19 07:36:05,037 INFO L134 LiptonReduction]: Checked pairs total: 18628 [2023-11-19 07:36:05,038 INFO L136 LiptonReduction]: Total number of compositions: 70 [2023-11-19 07:36:05,040 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:36:05,043 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=LoopHeads, 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;@6487eb07, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:36:05,046 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-19 07:36:05,049 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:36:05,049 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2023-11-19 07:36:05,049 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:36:05,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:05,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:05,050 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-11-19 07:36:05,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:05,051 INFO L85 PathProgramCache]: Analyzing trace with hash 544698254, now seen corresponding path program 1 times [2023-11-19 07:36:05,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:05,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871703211] [2023-11-19 07:36:05,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:05,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:05,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:05,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:05,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:05,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871703211] [2023-11-19 07:36:05,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871703211] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:05,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:05,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:36:05,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556911938] [2023-11-19 07:36:05,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:05,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:36:05,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:05,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:36:05,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:36:05,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 189 [2023-11-19 07:36:05,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 54 transitions, 124 flow. Second operand has 6 states, 6 states have (on average 79.16666666666667) internal successors, (475), 6 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:05,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:05,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 189 [2023-11-19 07:36:05,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:06,250 INFO L124 PetriNetUnfolderBase]: 2299/4146 cut-off events. [2023-11-19 07:36:06,250 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2023-11-19 07:36:06,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8044 conditions, 4146 events. 2299/4146 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 23058 event pairs, 1715 based on Foata normal form. 0/3930 useless extension candidates. Maximal degree in co-relation 1116. Up to 3508 conditions per place. [2023-11-19 07:36:06,281 INFO L140 encePairwiseOnDemand]: 175/189 looper letters, 58 selfloop transitions, 37 changer transitions 0/106 dead transitions. [2023-11-19 07:36:06,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 106 transitions, 418 flow [2023-11-19 07:36:06,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:36:06,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:36:06,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 564 transitions. [2023-11-19 07:36:06,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4973544973544973 [2023-11-19 07:36:06,285 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 564 transitions. [2023-11-19 07:36:06,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 564 transitions. [2023-11-19 07:36:06,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:06,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 564 transitions. [2023-11-19 07:36:06,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 94.0) internal successors, (564), 6 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:06,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 189.0) internal successors, (1323), 7 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:06,293 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 189.0) internal successors, (1323), 7 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:06,293 INFO L175 Difference]: Start difference. First operand has 57 places, 54 transitions, 124 flow. Second operand 6 states and 564 transitions. [2023-11-19 07:36:06,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 106 transitions, 418 flow [2023-11-19 07:36:06,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 106 transitions, 418 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:36:06,298 INFO L231 Difference]: Finished difference. Result has 66 places, 90 transitions, 336 flow [2023-11-19 07:36:06,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=336, PETRI_PLACES=66, PETRI_TRANSITIONS=90} [2023-11-19 07:36:06,302 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 9 predicate places. [2023-11-19 07:36:06,303 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 90 transitions, 336 flow [2023-11-19 07:36:06,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 79.16666666666667) internal successors, (475), 6 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:06,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:06,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:06,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:36:06,304 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-11-19 07:36:06,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:06,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1649785077, now seen corresponding path program 1 times [2023-11-19 07:36:06,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:06,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485201747] [2023-11-19 07:36:06,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:06,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:06,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:06,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:06,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:06,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485201747] [2023-11-19 07:36:06,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485201747] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:06,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:06,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:36:06,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165460633] [2023-11-19 07:36:06,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:06,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:36:06,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:06,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:36:06,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:36:06,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 189 [2023-11-19 07:36:06,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 90 transitions, 336 flow. Second operand has 4 states, 4 states have (on average 103.75) internal successors, (415), 4 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:06,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:06,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 189 [2023-11-19 07:36:06,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:06,763 INFO L124 PetriNetUnfolderBase]: 776/1935 cut-off events. [2023-11-19 07:36:06,764 INFO L125 PetriNetUnfolderBase]: For 194/305 co-relation queries the response was YES. [2023-11-19 07:36:06,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4178 conditions, 1935 events. 776/1935 cut-off events. For 194/305 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 12621 event pairs, 347 based on Foata normal form. 0/1781 useless extension candidates. Maximal degree in co-relation 2708. Up to 853 conditions per place. [2023-11-19 07:36:06,783 INFO L140 encePairwiseOnDemand]: 184/189 looper letters, 28 selfloop transitions, 2 changer transitions 2/98 dead transitions. [2023-11-19 07:36:06,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 98 transitions, 419 flow [2023-11-19 07:36:06,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:36:06,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:36:06,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 440 transitions. [2023-11-19 07:36:06,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.582010582010582 [2023-11-19 07:36:06,786 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 440 transitions. [2023-11-19 07:36:06,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 440 transitions. [2023-11-19 07:36:06,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:06,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 440 transitions. [2023-11-19 07:36:06,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:06,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 189.0) internal successors, (945), 5 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:06,791 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 189.0) internal successors, (945), 5 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:06,791 INFO L175 Difference]: Start difference. First operand has 66 places, 90 transitions, 336 flow. Second operand 4 states and 440 transitions. [2023-11-19 07:36:06,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 98 transitions, 419 flow [2023-11-19 07:36:06,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 98 transitions, 419 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:36:06,801 INFO L231 Difference]: Finished difference. Result has 71 places, 91 transitions, 352 flow [2023-11-19 07:36:06,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=352, PETRI_PLACES=71, PETRI_TRANSITIONS=91} [2023-11-19 07:36:06,803 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 14 predicate places. [2023-11-19 07:36:06,803 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 91 transitions, 352 flow [2023-11-19 07:36:06,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.75) internal successors, (415), 4 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:06,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:06,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:06,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:36:06,807 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-11-19 07:36:06,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:06,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1340624123, now seen corresponding path program 1 times [2023-11-19 07:36:06,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:06,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84449377] [2023-11-19 07:36:06,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:06,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:06,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:07,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:07,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:07,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84449377] [2023-11-19 07:36:07,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84449377] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:07,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:07,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:36:07,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135840274] [2023-11-19 07:36:07,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:07,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:36:07,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:07,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:36:07,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:36:07,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 189 [2023-11-19 07:36:07,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 91 transitions, 352 flow. Second operand has 6 states, 6 states have (on average 85.5) internal successors, (513), 6 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:07,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:07,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 189 [2023-11-19 07:36:07,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:08,676 INFO L124 PetriNetUnfolderBase]: 3649/6392 cut-off events. [2023-11-19 07:36:08,677 INFO L125 PetriNetUnfolderBase]: For 1465/1507 co-relation queries the response was YES. [2023-11-19 07:36:08,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16539 conditions, 6392 events. 3649/6392 cut-off events. For 1465/1507 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 38365 event pairs, 1337 based on Foata normal form. 0/6007 useless extension candidates. Maximal degree in co-relation 16452. Up to 4916 conditions per place. [2023-11-19 07:36:08,735 INFO L140 encePairwiseOnDemand]: 163/189 looper letters, 131 selfloop transitions, 89 changer transitions 0/231 dead transitions. [2023-11-19 07:36:08,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 231 transitions, 1230 flow [2023-11-19 07:36:08,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:36:08,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:36:08,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 678 transitions. [2023-11-19 07:36:08,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5978835978835979 [2023-11-19 07:36:08,739 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 678 transitions. [2023-11-19 07:36:08,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 678 transitions. [2023-11-19 07:36:08,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:08,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 678 transitions. [2023-11-19 07:36:08,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:08,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 189.0) internal successors, (1323), 7 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:08,746 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 189.0) internal successors, (1323), 7 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:08,746 INFO L175 Difference]: Start difference. First operand has 71 places, 91 transitions, 352 flow. Second operand 6 states and 678 transitions. [2023-11-19 07:36:08,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 231 transitions, 1230 flow [2023-11-19 07:36:08,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 231 transitions, 1204 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-11-19 07:36:08,759 INFO L231 Difference]: Finished difference. Result has 77 places, 175 transitions, 908 flow [2023-11-19 07:36:08,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=908, PETRI_PLACES=77, PETRI_TRANSITIONS=175} [2023-11-19 07:36:08,760 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 20 predicate places. [2023-11-19 07:36:08,761 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 175 transitions, 908 flow [2023-11-19 07:36:08,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 85.5) internal successors, (513), 6 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:08,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:08,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:08,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:36:08,762 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-11-19 07:36:08,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:08,763 INFO L85 PathProgramCache]: Analyzing trace with hash -627887235, now seen corresponding path program 1 times [2023-11-19 07:36:08,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:08,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872128084] [2023-11-19 07:36:08,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:08,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:08,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:09,085 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:36:09,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:09,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872128084] [2023-11-19 07:36:09,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872128084] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:09,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:09,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:36:09,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452491071] [2023-11-19 07:36:09,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:09,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:36:09,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:09,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:36:09,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:36:09,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 189 [2023-11-19 07:36:09,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 175 transitions, 908 flow. Second operand has 6 states, 6 states have (on average 84.83333333333333) internal successors, (509), 6 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:09,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:09,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 189 [2023-11-19 07:36:09,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:10,972 INFO L124 PetriNetUnfolderBase]: 4197/7805 cut-off events. [2023-11-19 07:36:10,973 INFO L125 PetriNetUnfolderBase]: For 6282/6549 co-relation queries the response was YES. [2023-11-19 07:36:11,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25483 conditions, 7805 events. 4197/7805 cut-off events. For 6282/6549 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 51228 event pairs, 1254 based on Foata normal form. 11/7497 useless extension candidates. Maximal degree in co-relation 20095. Up to 5830 conditions per place. [2023-11-19 07:36:11,062 INFO L140 encePairwiseOnDemand]: 169/189 looper letters, 160 selfloop transitions, 69 changer transitions 0/258 dead transitions. [2023-11-19 07:36:11,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 258 transitions, 1799 flow [2023-11-19 07:36:11,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:36:11,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:36:11,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 598 transitions. [2023-11-19 07:36:11,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.527336860670194 [2023-11-19 07:36:11,066 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 598 transitions. [2023-11-19 07:36:11,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 598 transitions. [2023-11-19 07:36:11,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:11,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 598 transitions. [2023-11-19 07:36:11,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 99.66666666666667) internal successors, (598), 6 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:11,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 189.0) internal successors, (1323), 7 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:11,074 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 189.0) internal successors, (1323), 7 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:11,074 INFO L175 Difference]: Start difference. First operand has 77 places, 175 transitions, 908 flow. Second operand 6 states and 598 transitions. [2023-11-19 07:36:11,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 258 transitions, 1799 flow [2023-11-19 07:36:11,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 258 transitions, 1699 flow, removed 50 selfloop flow, removed 0 redundant places. [2023-11-19 07:36:11,169 INFO L231 Difference]: Finished difference. Result has 87 places, 235 transitions, 1524 flow [2023-11-19 07:36:11,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=846, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1524, PETRI_PLACES=87, PETRI_TRANSITIONS=235} [2023-11-19 07:36:11,171 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 30 predicate places. [2023-11-19 07:36:11,171 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 235 transitions, 1524 flow [2023-11-19 07:36:11,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 84.83333333333333) internal successors, (509), 6 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:11,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:11,173 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:11,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:36:11,174 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-11-19 07:36:11,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:11,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1875778565, now seen corresponding path program 1 times [2023-11-19 07:36:11,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:11,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226956076] [2023-11-19 07:36:11,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:11,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:11,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:11,802 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:11,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:11,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226956076] [2023-11-19 07:36:11,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226956076] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:36:11,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376127957] [2023-11-19 07:36:11,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:11,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:11,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da823133-26f0-47dc-a529-37965aac5c4e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:11,809 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da823133-26f0-47dc-a529-37965aac5c4e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:36:11,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da823133-26f0-47dc-a529-37965aac5c4e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:36:11,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:11,944 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-19 07:36:11,948 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:36:12,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-19 07:36:12,027 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-19 07:36:12,028 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-19 07:36:12,052 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-11-19 07:36:12,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2023-11-19 07:36:12,087 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:36:12,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 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 [2023-11-19 07:36:12,116 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:36:12,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 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 [2023-11-19 07:36:12,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 45 [2023-11-19 07:36:12,185 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:12,186 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:36:12,229 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (and (forall ((v_ArrVal_347 (Array Int Int))) (= (select (select (store |c_#race| c_threadThread1of2ForFork0_~t~0.base v_ArrVal_347) |c_ULTIMATE.start_main_~ts~0#1.base|) (+ .cse0 |c_ULTIMATE.start_main_~ts~0#1.offset| 2)) |c_ULTIMATE.start_main_#t~nondet9#1|)) (forall ((v_ArrVal_347 (Array Int Int))) (= (select (select (store |c_#race| c_threadThread1of2ForFork0_~t~0.base v_ArrVal_347) |c_ULTIMATE.start_main_~ts~0#1.base|) (+ .cse0 |c_ULTIMATE.start_main_~ts~0#1.offset|)) |c_ULTIMATE.start_main_#t~nondet9#1|)) (forall ((v_ArrVal_347 (Array Int Int))) (= (select (select (store |c_#race| c_threadThread1of2ForFork0_~t~0.base v_ArrVal_347) |c_ULTIMATE.start_main_~ts~0#1.base|) (+ .cse0 |c_ULTIMATE.start_main_~ts~0#1.offset| 1)) |c_ULTIMATE.start_main_#t~nondet9#1|)) (forall ((v_ArrVal_347 (Array Int Int))) (= (select (select (store |c_#race| c_threadThread1of2ForFork0_~t~0.base v_ArrVal_347) |c_ULTIMATE.start_main_~ts~0#1.base|) (+ .cse0 |c_ULTIMATE.start_main_~ts~0#1.offset| 3)) |c_ULTIMATE.start_main_#t~nondet9#1|)))) is different from false [2023-11-19 07:36:12,254 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (and (forall ((v_ArrVal_347 (Array Int Int))) (= (select (select (store |c_#race| |c_threadThread1of2ForFork0_#in~arg.base| v_ArrVal_347) |c_ULTIMATE.start_main_~ts~0#1.base|) (+ .cse0 |c_ULTIMATE.start_main_~ts~0#1.offset|)) |c_ULTIMATE.start_main_#t~nondet9#1|)) (forall ((v_ArrVal_347 (Array Int Int))) (= (select (select (store |c_#race| |c_threadThread1of2ForFork0_#in~arg.base| v_ArrVal_347) |c_ULTIMATE.start_main_~ts~0#1.base|) (+ .cse0 |c_ULTIMATE.start_main_~ts~0#1.offset| 2)) |c_ULTIMATE.start_main_#t~nondet9#1|)) (forall ((v_ArrVal_347 (Array Int Int))) (= (select (select (store |c_#race| |c_threadThread1of2ForFork0_#in~arg.base| v_ArrVal_347) |c_ULTIMATE.start_main_~ts~0#1.base|) (+ .cse0 |c_ULTIMATE.start_main_~ts~0#1.offset| 1)) |c_ULTIMATE.start_main_#t~nondet9#1|)) (forall ((v_ArrVal_347 (Array Int Int))) (= (select (select (store |c_#race| |c_threadThread1of2ForFork0_#in~arg.base| v_ArrVal_347) |c_ULTIMATE.start_main_~ts~0#1.base|) (+ .cse0 |c_ULTIMATE.start_main_~ts~0#1.offset| 3)) |c_ULTIMATE.start_main_#t~nondet9#1|)))) is different from false [2023-11-19 07:36:12,282 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (let ((.cse2 (+ .cse1 |c_ULTIMATE.start_main_~ts~0#1.offset| 3))) (let ((.cse0 (store |c_#race| |c_ULTIMATE.start_main_~ts~0#1.base| (store (select |c_#race| |c_ULTIMATE.start_main_~ts~0#1.base|) .cse2 |c_ULTIMATE.start_main_#t~nondet9#1|)))) (and (forall ((v_ArrVal_347 (Array Int Int))) (= (select (select (store .cse0 |c_threadThread1of2ForFork0_#in~arg.base| v_ArrVal_347) |c_ULTIMATE.start_main_~ts~0#1.base|) (+ .cse1 |c_ULTIMATE.start_main_~ts~0#1.offset|)) |c_ULTIMATE.start_main_#t~nondet9#1|)) (forall ((v_ArrVal_347 (Array Int Int))) (= (select (select (store .cse0 |c_threadThread1of2ForFork0_#in~arg.base| v_ArrVal_347) |c_ULTIMATE.start_main_~ts~0#1.base|) (+ .cse1 |c_ULTIMATE.start_main_~ts~0#1.offset| 1)) |c_ULTIMATE.start_main_#t~nondet9#1|)) (forall ((v_ArrVal_347 (Array Int Int))) (= (select (select (store .cse0 |c_threadThread1of2ForFork0_#in~arg.base| v_ArrVal_347) |c_ULTIMATE.start_main_~ts~0#1.base|) .cse2) |c_ULTIMATE.start_main_#t~nondet9#1|)) (forall ((v_ArrVal_347 (Array Int Int))) (= |c_ULTIMATE.start_main_#t~nondet9#1| (select (select (store .cse0 |c_threadThread1of2ForFork0_#in~arg.base| v_ArrVal_347) |c_ULTIMATE.start_main_~ts~0#1.base|) (+ .cse1 |c_ULTIMATE.start_main_~ts~0#1.offset| 2)))))))) is different from false [2023-11-19 07:36:12,313 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (let ((.cse3 (+ .cse1 |c_ULTIMATE.start_main_~ts~0#1.offset| 2)) (.cse2 (+ .cse1 |c_ULTIMATE.start_main_~ts~0#1.offset| 3))) (let ((.cse0 (store |c_#race| |c_ULTIMATE.start_main_~ts~0#1.base| (store (store (select |c_#race| |c_ULTIMATE.start_main_~ts~0#1.base|) .cse3 |c_ULTIMATE.start_main_#t~nondet9#1|) .cse2 |c_ULTIMATE.start_main_#t~nondet9#1|)))) (and (forall ((v_ArrVal_347 (Array Int Int))) (= (select (select (store .cse0 |c_threadThread1of2ForFork0_#in~arg.base| v_ArrVal_347) |c_ULTIMATE.start_main_~ts~0#1.base|) (+ .cse1 |c_ULTIMATE.start_main_~ts~0#1.offset|)) |c_ULTIMATE.start_main_#t~nondet9#1|)) (forall ((v_ArrVal_347 (Array Int Int))) (= (select (select (store .cse0 |c_threadThread1of2ForFork0_#in~arg.base| v_ArrVal_347) |c_ULTIMATE.start_main_~ts~0#1.base|) (+ .cse1 |c_ULTIMATE.start_main_~ts~0#1.offset| 1)) |c_ULTIMATE.start_main_#t~nondet9#1|)) (forall ((v_ArrVal_347 (Array Int Int))) (= (select (select (store .cse0 |c_threadThread1of2ForFork0_#in~arg.base| v_ArrVal_347) |c_ULTIMATE.start_main_~ts~0#1.base|) .cse2) |c_ULTIMATE.start_main_#t~nondet9#1|)) (forall ((v_ArrVal_347 (Array Int Int))) (= |c_ULTIMATE.start_main_#t~nondet9#1| (select (select (store .cse0 |c_threadThread1of2ForFork0_#in~arg.base| v_ArrVal_347) |c_ULTIMATE.start_main_~ts~0#1.base|) .cse3))))))) is different from false [2023-11-19 07:36:14,405 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-11-19 07:36:14,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376127957] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:36:14,406 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:36:14,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2023-11-19 07:36:14,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383607523] [2023-11-19 07:36:14,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:36:14,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-19 07:36:14,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:14,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-19 07:36:14,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=102, Unknown=4, NotChecked=92, Total=240 [2023-11-19 07:36:14,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 189 [2023-11-19 07:36:14,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 235 transitions, 1524 flow. Second operand has 16 states, 16 states have (on average 53.5625) internal successors, (857), 16 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:14,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:14,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 189 [2023-11-19 07:36:14,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:17,772 INFO L124 PetriNetUnfolderBase]: 6749/11395 cut-off events. [2023-11-19 07:36:17,772 INFO L125 PetriNetUnfolderBase]: For 17536/17542 co-relation queries the response was YES. [2023-11-19 07:36:17,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43046 conditions, 11395 events. 6749/11395 cut-off events. For 17536/17542 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 70010 event pairs, 1486 based on Foata normal form. 0/10076 useless extension candidates. Maximal degree in co-relation 28145. Up to 6486 conditions per place. [2023-11-19 07:36:17,904 INFO L140 encePairwiseOnDemand]: 168/189 looper letters, 403 selfloop transitions, 76 changer transitions 0/483 dead transitions. [2023-11-19 07:36:17,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 483 transitions, 4042 flow [2023-11-19 07:36:17,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:36:17,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-19 07:36:17,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 819 transitions. [2023-11-19 07:36:17,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2023-11-19 07:36:17,910 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 819 transitions. [2023-11-19 07:36:17,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 819 transitions. [2023-11-19 07:36:17,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:17,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 819 transitions. [2023-11-19 07:36:17,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 68.25) internal successors, (819), 12 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:17,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 189.0) internal successors, (2457), 13 states have internal predecessors, (2457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:17,922 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 189.0) internal successors, (2457), 13 states have internal predecessors, (2457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:17,922 INFO L175 Difference]: Start difference. First operand has 87 places, 235 transitions, 1524 flow. Second operand 12 states and 819 transitions. [2023-11-19 07:36:17,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 483 transitions, 4042 flow [2023-11-19 07:36:18,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 483 transitions, 3806 flow, removed 118 selfloop flow, removed 0 redundant places. [2023-11-19 07:36:18,080 INFO L231 Difference]: Finished difference. Result has 106 places, 271 transitions, 1987 flow [2023-11-19 07:36:18,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=1406, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1987, PETRI_PLACES=106, PETRI_TRANSITIONS=271} [2023-11-19 07:36:18,082 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 49 predicate places. [2023-11-19 07:36:18,082 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 271 transitions, 1987 flow [2023-11-19 07:36:18,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 53.5625) internal successors, (857), 16 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:18,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:18,083 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:18,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da823133-26f0-47dc-a529-37965aac5c4e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:36:18,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da823133-26f0-47dc-a529-37965aac5c4e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 07:36:18,305 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-11-19 07:36:18,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:18,305 INFO L85 PathProgramCache]: Analyzing trace with hash 720591146, now seen corresponding path program 1 times [2023-11-19 07:36:18,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:18,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968724797] [2023-11-19 07:36:18,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:18,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:18,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:18,938 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:18,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:18,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968724797] [2023-11-19 07:36:18,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968724797] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:36:18,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678639762] [2023-11-19 07:36:18,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:18,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:18,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da823133-26f0-47dc-a529-37965aac5c4e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:18,942 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da823133-26f0-47dc-a529-37965aac5c4e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:36:18,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da823133-26f0-47dc-a529-37965aac5c4e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:36:19,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:19,067 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-19 07:36:19,071 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:36:19,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-19 07:36:19,096 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-19 07:36:19,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-19 07:36:19,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-19 07:36:19,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-11-19 07:36:19,168 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:36:19,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2023-11-19 07:36:19,198 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:36:19,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 46 [2023-11-19 07:36:19,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 34 [2023-11-19 07:36:19,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:19,248 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:36:19,277 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_451 (Array Int Int))) (= |c_threadThread1of2ForFork0_#t~nondet4| (select (select (store |c_#race| |c_ULTIMATE.start_main_~ts~0#1.base| v_ArrVal_451) c_threadThread1of2ForFork0_~t~0.base) (+ c_threadThread1of2ForFork0_~t~0.offset 4)))) (forall ((v_ArrVal_451 (Array Int Int))) (= (select (select (store |c_#race| |c_ULTIMATE.start_main_~ts~0#1.base| v_ArrVal_451) c_threadThread1of2ForFork0_~t~0.base) (+ 7 c_threadThread1of2ForFork0_~t~0.offset)) |c_threadThread1of2ForFork0_#t~nondet4|)) (forall ((v_ArrVal_451 (Array Int Int))) (= |c_threadThread1of2ForFork0_#t~nondet4| (select (select (store |c_#race| |c_ULTIMATE.start_main_~ts~0#1.base| v_ArrVal_451) c_threadThread1of2ForFork0_~t~0.base) (+ c_threadThread1of2ForFork0_~t~0.offset 5)))) (forall ((v_ArrVal_451 (Array Int Int))) (= |c_threadThread1of2ForFork0_#t~nondet4| (select (select (store |c_#race| |c_ULTIMATE.start_main_~ts~0#1.base| v_ArrVal_451) c_threadThread1of2ForFork0_~t~0.base) (+ c_threadThread1of2ForFork0_~t~0.offset 6))))) is different from false [2023-11-19 07:36:19,300 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (+ 7 c_threadThread1of2ForFork0_~t~0.offset))) (let ((.cse0 (store |c_#race| c_threadThread1of2ForFork0_~t~0.base (store (select |c_#race| c_threadThread1of2ForFork0_~t~0.base) .cse1 |c_threadThread1of2ForFork0_#t~nondet4|)))) (and (forall ((v_ArrVal_451 (Array Int Int))) (= |c_threadThread1of2ForFork0_#t~nondet4| (select (select (store .cse0 |c_ULTIMATE.start_main_~ts~0#1.base| v_ArrVal_451) c_threadThread1of2ForFork0_~t~0.base) (+ c_threadThread1of2ForFork0_~t~0.offset 4)))) (forall ((v_ArrVal_451 (Array Int Int))) (= |c_threadThread1of2ForFork0_#t~nondet4| (select (select (store .cse0 |c_ULTIMATE.start_main_~ts~0#1.base| v_ArrVal_451) c_threadThread1of2ForFork0_~t~0.base) (+ c_threadThread1of2ForFork0_~t~0.offset 6)))) (forall ((v_ArrVal_451 (Array Int Int))) (= |c_threadThread1of2ForFork0_#t~nondet4| (select (select (store .cse0 |c_ULTIMATE.start_main_~ts~0#1.base| v_ArrVal_451) c_threadThread1of2ForFork0_~t~0.base) (+ c_threadThread1of2ForFork0_~t~0.offset 5)))) (forall ((v_ArrVal_451 (Array Int Int))) (= |c_threadThread1of2ForFork0_#t~nondet4| (select (select (store .cse0 |c_ULTIMATE.start_main_~ts~0#1.base| v_ArrVal_451) c_threadThread1of2ForFork0_~t~0.base) .cse1)))))) is different from false [2023-11-19 07:36:23,515 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:36:23,516 INFO L378 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 4 case distinctions, treesize of input 37 treesize of output 53 [2023-11-19 07:36:23,525 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:36:23,525 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 28 [2023-11-19 07:36:23,537 INFO L349 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2023-11-19 07:36:23,538 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 37 treesize of output 1 [2023-11-19 07:36:23,546 INFO L349 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2023-11-19 07:36:23,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 37 treesize of output 1 [2023-11-19 07:36:23,554 INFO L349 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2023-11-19 07:36:23,554 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 37 treesize of output 1 [2023-11-19 07:36:23,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-11-19 07:36:23,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678639762] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:36:23,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:36:23,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2023-11-19 07:36:23,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304265632] [2023-11-19 07:36:23,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:36:23,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-19 07:36:23,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:23,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-19 07:36:23,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=126, Unknown=16, NotChecked=50, Total=240 [2023-11-19 07:36:23,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 189 [2023-11-19 07:36:23,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 271 transitions, 1987 flow. Second operand has 16 states, 16 states have (on average 58.625) internal successors, (938), 16 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:23,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:23,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 189 [2023-11-19 07:36:23,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:28,855 INFO L124 PetriNetUnfolderBase]: 7618/12823 cut-off events. [2023-11-19 07:36:28,856 INFO L125 PetriNetUnfolderBase]: For 22625/22631 co-relation queries the response was YES. [2023-11-19 07:36:28,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51563 conditions, 12823 events. 7618/12823 cut-off events. For 22625/22631 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 81272 event pairs, 1012 based on Foata normal form. 6/11620 useless extension candidates. Maximal degree in co-relation 40146. Up to 4796 conditions per place. [2023-11-19 07:36:29,012 INFO L140 encePairwiseOnDemand]: 168/189 looper letters, 633 selfloop transitions, 387 changer transitions 3/1027 dead transitions. [2023-11-19 07:36:29,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 1027 transitions, 8950 flow [2023-11-19 07:36:29,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-19 07:36:29,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-11-19 07:36:29,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1759 transitions. [2023-11-19 07:36:29,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40464688290775247 [2023-11-19 07:36:29,022 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1759 transitions. [2023-11-19 07:36:29,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1759 transitions. [2023-11-19 07:36:29,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:29,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1759 transitions. [2023-11-19 07:36:29,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 76.47826086956522) internal successors, (1759), 23 states have internal predecessors, (1759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:29,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 189.0) internal successors, (4536), 24 states have internal predecessors, (4536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:29,044 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 189.0) internal successors, (4536), 24 states have internal predecessors, (4536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:29,044 INFO L175 Difference]: Start difference. First operand has 106 places, 271 transitions, 1987 flow. Second operand 23 states and 1759 transitions. [2023-11-19 07:36:29,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 1027 transitions, 8950 flow [2023-11-19 07:36:29,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 1027 transitions, 8926 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-19 07:36:29,254 INFO L231 Difference]: Finished difference. Result has 139 places, 660 transitions, 6572 flow [2023-11-19 07:36:29,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=1974, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=6572, PETRI_PLACES=139, PETRI_TRANSITIONS=660} [2023-11-19 07:36:29,256 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 82 predicate places. [2023-11-19 07:36:29,256 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 660 transitions, 6572 flow [2023-11-19 07:36:29,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 58.625) internal successors, (938), 16 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:29,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:29,257 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:29,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da823133-26f0-47dc-a529-37965aac5c4e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:36:29,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da823133-26f0-47dc-a529-37965aac5c4e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-19 07:36:29,477 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-11-19 07:36:29,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:29,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1023531451, now seen corresponding path program 2 times [2023-11-19 07:36:29,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:29,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863340940] [2023-11-19 07:36:29,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:29,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:29,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:29,974 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:29,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:29,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863340940] [2023-11-19 07:36:29,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863340940] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:36:29,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966595412] [2023-11-19 07:36:29,976 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:36:29,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:29,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da823133-26f0-47dc-a529-37965aac5c4e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:29,981 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da823133-26f0-47dc-a529-37965aac5c4e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:36:30,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da823133-26f0-47dc-a529-37965aac5c4e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:36:30,148 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:36:30,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:36:30,150 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-19 07:36:30,158 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:36:30,163 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-19 07:36:30,201 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-19 07:36:30,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-19 07:36:30,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-11-19 07:36:30,452 INFO L378 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 [2023-11-19 07:36:30,524 INFO L378 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 0 case distinctions, treesize of input 43 treesize of output 30 [2023-11-19 07:36:30,576 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:36:30,577 INFO L378 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 1 case distinctions, treesize of input 40 treesize of output 42 [2023-11-19 07:36:30,646 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:36:30,647 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2023-11-19 07:36:30,707 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:30,708 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:36:31,473 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:31,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966595412] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:36:31,474 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:36:31,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 26 [2023-11-19 07:36:31,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885179634] [2023-11-19 07:36:31,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:36:31,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-19 07:36:31,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:31,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-19 07:36:31,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=633, Unknown=0, NotChecked=0, Total=756 [2023-11-19 07:36:34,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 189 [2023-11-19 07:36:34,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 660 transitions, 6572 flow. Second operand has 28 states, 28 states have (on average 75.82142857142857) internal successors, (2123), 28 states have internal predecessors, (2123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:34,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:34,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 189 [2023-11-19 07:36:34,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand