./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 0e0057cc 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_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme --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 6efa0097353392a416215c2535cfc6cdc34364d9b0eb2844e37da9edef467642 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 12:00:04,862 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 12:00:04,936 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-26 12:00:04,942 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 12:00:04,943 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 12:00:04,970 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 12:00:04,971 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 12:00:04,971 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 12:00:04,972 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 12:00:04,973 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 12:00:04,974 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 12:00:04,974 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 12:00:04,975 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 12:00:04,976 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 12:00:04,976 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 12:00:04,977 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 12:00:04,977 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 12:00:04,978 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 12:00:04,979 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 12:00:04,979 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 12:00:04,980 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 12:00:04,981 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 12:00:04,981 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-26 12:00:04,982 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 12:00:04,982 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 12:00:04,983 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 12:00:04,984 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 12:00:04,984 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 12:00:04,985 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 12:00:04,985 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 12:00:04,986 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:00:04,987 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 12:00:04,987 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 12:00:04,988 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 12:00:04,988 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 12:00:04,989 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 12:00:04,989 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 12:00:04,990 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 12:00:04,990 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 12:00:04,991 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 12:00:04,991 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 12:00:04,992 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_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6efa0097353392a416215c2535cfc6cdc34364d9b0eb2844e37da9edef467642 [2023-11-26 12:00:05,330 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 12:00:05,355 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 12:00:05,358 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 12:00:05,360 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 12:00:05,361 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 12:00:05,362 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i [2023-11-26 12:00:08,548 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 12:00:08,974 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 12:00:08,974 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i [2023-11-26 12:00:09,014 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/data/9f4896c97/24a48cfab1a6463b941c707cfea5851f/FLAG7cb533260 [2023-11-26 12:00:09,037 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/data/9f4896c97/24a48cfab1a6463b941c707cfea5851f [2023-11-26 12:00:09,044 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 12:00:09,047 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 12:00:09,049 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 12:00:09,049 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 12:00:09,055 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 12:00:09,056 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:00:09" (1/1) ... [2023-11-26 12:00:09,057 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c614f04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:09, skipping insertion in model container [2023-11-26 12:00:09,057 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:00:09" (1/1) ... [2023-11-26 12:00:09,137 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:00:09,828 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-26 12:00:09,830 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-26 12:00:09,831 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-26 12:00:09,832 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-26 12:00:09,886 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:00:09,916 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 12:00:09,998 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-26 12:00:10,002 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-26 12:00:10,004 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-26 12:00:10,006 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-26 12:00:10,034 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:00:10,140 INFO L206 MainTranslator]: Completed translation [2023-11-26 12:00:10,141 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:10 WrapperNode [2023-11-26 12:00:10,141 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 12:00:10,144 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 12:00:10,144 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 12:00:10,144 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 12:00:10,153 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:10" (1/1) ... [2023-11-26 12:00:10,191 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:10" (1/1) ... [2023-11-26 12:00:10,261 INFO L138 Inliner]: procedures = 279, calls = 56, calls flagged for inlining = 12, calls inlined = 13, statements flattened = 377 [2023-11-26 12:00:10,262 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 12:00:10,263 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 12:00:10,263 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 12:00:10,263 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 12:00:10,274 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:10" (1/1) ... [2023-11-26 12:00:10,275 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:10" (1/1) ... [2023-11-26 12:00:10,283 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:10" (1/1) ... [2023-11-26 12:00:10,284 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:10" (1/1) ... [2023-11-26 12:00:10,334 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:10" (1/1) ... [2023-11-26 12:00:10,341 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:10" (1/1) ... [2023-11-26 12:00:10,356 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:10" (1/1) ... [2023-11-26 12:00:10,360 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:10" (1/1) ... [2023-11-26 12:00:10,367 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 12:00:10,374 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 12:00:10,375 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 12:00:10,375 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 12:00:10,376 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:10" (1/1) ... [2023-11-26 12:00:10,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:00:10,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:10,410 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 12:00:10,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 12:00:10,447 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 12:00:10,448 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-26 12:00:10,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 12:00:10,448 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-26 12:00:10,448 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-26 12:00:10,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-26 12:00:10,449 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-26 12:00:10,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 12:00:10,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 12:00:10,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-26 12:00:10,450 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-26 12:00:10,450 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-26 12:00:10,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-26 12:00:10,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 12:00:10,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 12:00:10,471 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 12:00:10,670 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 12:00:10,672 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 12:00:11,548 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 12:00:11,601 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 12:00:11,601 INFO L309 CfgBuilder]: Removed 16 assume(true) statements. [2023-11-26 12:00:11,604 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:00:11 BoogieIcfgContainer [2023-11-26 12:00:11,605 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 12:00:11,609 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 12:00:11,609 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 12:00:11,613 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 12:00:11,614 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:00:09" (1/3) ... [2023-11-26 12:00:11,615 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3befb19c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:00:11, skipping insertion in model container [2023-11-26 12:00:11,615 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:10" (2/3) ... [2023-11-26 12:00:11,617 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3befb19c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:00:11, skipping insertion in model container [2023-11-26 12:00:11,617 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:00:11" (3/3) ... [2023-11-26 12:00:11,619 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_92-evilcollapse_racing.i [2023-11-26 12:00:11,629 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 12:00:11,641 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 12:00:11,641 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2023-11-26 12:00:11,641 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 12:00:11,781 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-26 12:00:11,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 397 places, 421 transitions, 849 flow [2023-11-26 12:00:12,090 INFO L124 PetriNetUnfolderBase]: 29/446 cut-off events. [2023-11-26 12:00:12,091 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-26 12:00:12,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 451 conditions, 446 events. 29/446 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 970 event pairs, 0 based on Foata normal form. 0/391 useless extension candidates. Maximal degree in co-relation 264. Up to 4 conditions per place. [2023-11-26 12:00:12,100 INFO L82 GeneralOperation]: Start removeDead. Operand has 397 places, 421 transitions, 849 flow [2023-11-26 12:00:12,109 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 397 places, 421 transitions, 849 flow [2023-11-26 12:00:12,120 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:00:12,127 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;@4c4f899c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:00:12,127 INFO L358 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2023-11-26 12:00:12,135 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 12:00:12,135 INFO L124 PetriNetUnfolderBase]: 1/43 cut-off events. [2023-11-26 12:00:12,136 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 12:00:12,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:12,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:12,137 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-11-26 12:00:12,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:12,143 INFO L85 PathProgramCache]: Analyzing trace with hash 299044945, now seen corresponding path program 1 times [2023-11-26 12:00:12,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:12,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710618505] [2023-11-26 12:00:12,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:12,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:12,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:13,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:13,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:13,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710618505] [2023-11-26 12:00:13,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710618505] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:13,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:13,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 12:00:13,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513115857] [2023-11-26 12:00:13,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:13,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:00:13,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:13,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:00:13,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:00:14,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 421 [2023-11-26 12:00:14,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 421 transitions, 849 flow. Second operand has 6 states, 6 states have (on average 296.3333333333333) internal successors, (1778), 6 states have internal predecessors, (1778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:14,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:14,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 421 [2023-11-26 12:00:14,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:14,558 INFO L124 PetriNetUnfolderBase]: 163/1011 cut-off events. [2023-11-26 12:00:14,558 INFO L125 PetriNetUnfolderBase]: For 11/15 co-relation queries the response was YES. [2023-11-26 12:00:14,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1417 conditions, 1011 events. 163/1011 cut-off events. For 11/15 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 4733 event pairs, 144 based on Foata normal form. 140/1067 useless extension candidates. Maximal degree in co-relation 1079. Up to 390 conditions per place. [2023-11-26 12:00:14,573 INFO L140 encePairwiseOnDemand]: 388/421 looper letters, 92 selfloop transitions, 10 changer transitions 2/395 dead transitions. [2023-11-26 12:00:14,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 395 transitions, 1001 flow [2023-11-26 12:00:14,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 12:00:14,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 12:00:14,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1895 transitions. [2023-11-26 12:00:14,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7501979414093428 [2023-11-26 12:00:14,602 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1895 transitions. [2023-11-26 12:00:14,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1895 transitions. [2023-11-26 12:00:14,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:14,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1895 transitions. [2023-11-26 12:00:14,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 315.8333333333333) internal successors, (1895), 6 states have internal predecessors, (1895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:14,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:14,640 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:14,643 INFO L175 Difference]: Start difference. First operand has 397 places, 421 transitions, 849 flow. Second operand 6 states and 1895 transitions. [2023-11-26 12:00:14,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 395 transitions, 1001 flow [2023-11-26 12:00:14,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 395 transitions, 1001 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 12:00:14,671 INFO L231 Difference]: Finished difference. Result has 397 places, 393 transitions, 813 flow [2023-11-26 12:00:14,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=421, PETRI_DIFFERENCE_MINUEND_FLOW=797, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=813, PETRI_PLACES=397, PETRI_TRANSITIONS=393} [2023-11-26 12:00:14,679 INFO L281 CegarLoopForPetriNet]: 397 programPoint places, 0 predicate places. [2023-11-26 12:00:14,679 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 393 transitions, 813 flow [2023-11-26 12:00:14,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 296.3333333333333) internal successors, (1778), 6 states have internal predecessors, (1778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:14,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:14,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:14,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 12:00:14,684 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-11-26 12:00:14,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:14,685 INFO L85 PathProgramCache]: Analyzing trace with hash -392632889, now seen corresponding path program 1 times [2023-11-26 12:00:14,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:14,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777778681] [2023-11-26 12:00:14,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:14,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:14,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:15,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:15,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:15,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777778681] [2023-11-26 12:00:15,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777778681] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:15,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:15,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 12:00:15,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457862906] [2023-11-26 12:00:15,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:15,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:00:15,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:15,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:00:15,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:00:16,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 421 [2023-11-26 12:00:16,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 393 transitions, 813 flow. Second operand has 6 states, 6 states have (on average 296.3333333333333) internal successors, (1778), 6 states have internal predecessors, (1778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:16,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:16,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 421 [2023-11-26 12:00:16,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:16,372 INFO L124 PetriNetUnfolderBase]: 163/1007 cut-off events. [2023-11-26 12:00:16,373 INFO L125 PetriNetUnfolderBase]: For 11/15 co-relation queries the response was YES. [2023-11-26 12:00:16,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1424 conditions, 1007 events. 163/1007 cut-off events. For 11/15 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 4709 event pairs, 144 based on Foata normal form. 0/927 useless extension candidates. Maximal degree in co-relation 1248. Up to 390 conditions per place. [2023-11-26 12:00:16,381 INFO L140 encePairwiseOnDemand]: 409/421 looper letters, 92 selfloop transitions, 10 changer transitions 0/391 dead transitions. [2023-11-26 12:00:16,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 391 transitions, 1013 flow [2023-11-26 12:00:16,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 12:00:16,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 12:00:16,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1874 transitions. [2023-11-26 12:00:16,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7418844022169437 [2023-11-26 12:00:16,389 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1874 transitions. [2023-11-26 12:00:16,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1874 transitions. [2023-11-26 12:00:16,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:16,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1874 transitions. [2023-11-26 12:00:16,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 312.3333333333333) internal successors, (1874), 6 states have internal predecessors, (1874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:16,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:16,412 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:16,412 INFO L175 Difference]: Start difference. First operand has 397 places, 393 transitions, 813 flow. Second operand 6 states and 1874 transitions. [2023-11-26 12:00:16,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 391 transitions, 1013 flow [2023-11-26 12:00:16,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 391 transitions, 993 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-26 12:00:16,424 INFO L231 Difference]: Finished difference. Result has 393 places, 391 transitions, 809 flow [2023-11-26 12:00:16,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=421, PETRI_DIFFERENCE_MINUEND_FLOW=789, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=809, PETRI_PLACES=393, PETRI_TRANSITIONS=391} [2023-11-26 12:00:16,426 INFO L281 CegarLoopForPetriNet]: 397 programPoint places, -4 predicate places. [2023-11-26 12:00:16,427 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 391 transitions, 809 flow [2023-11-26 12:00:16,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 296.3333333333333) internal successors, (1778), 6 states have internal predecessors, (1778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:16,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:16,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:16,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 12:00:16,430 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-11-26 12:00:16,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:16,430 INFO L85 PathProgramCache]: Analyzing trace with hash 384460638, now seen corresponding path program 1 times [2023-11-26 12:00:16,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:16,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321189730] [2023-11-26 12:00:16,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:16,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:16,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:16,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:16,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:16,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321189730] [2023-11-26 12:00:16,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321189730] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:16,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:16,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:00:16,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972559576] [2023-11-26 12:00:16,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:16,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:00:16,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:16,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:00:16,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:00:16,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 383 out of 421 [2023-11-26 12:00:16,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 391 transitions, 809 flow. Second operand has 3 states, 3 states have (on average 384.3333333333333) internal successors, (1153), 3 states have internal predecessors, (1153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:16,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:16,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 383 of 421 [2023-11-26 12:00:16,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:16,641 INFO L124 PetriNetUnfolderBase]: 15/563 cut-off events. [2023-11-26 12:00:16,641 INFO L125 PetriNetUnfolderBase]: For 5/6 co-relation queries the response was YES. [2023-11-26 12:00:16,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 624 conditions, 563 events. 15/563 cut-off events. For 5/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1472 event pairs, 8 based on Foata normal form. 1/523 useless extension candidates. Maximal degree in co-relation 404. Up to 34 conditions per place. [2023-11-26 12:00:16,645 INFO L140 encePairwiseOnDemand]: 418/421 looper letters, 15 selfloop transitions, 2 changer transitions 0/392 dead transitions. [2023-11-26 12:00:16,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 392 transitions, 845 flow [2023-11-26 12:00:16,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:00:16,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:00:16,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1167 transitions. [2023-11-26 12:00:16,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9239904988123515 [2023-11-26 12:00:16,650 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1167 transitions. [2023-11-26 12:00:16,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1167 transitions. [2023-11-26 12:00:16,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:16,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1167 transitions. [2023-11-26 12:00:16,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 389.0) internal successors, (1167), 3 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:16,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 421.0) internal successors, (1684), 4 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:16,662 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 421.0) internal successors, (1684), 4 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:16,663 INFO L175 Difference]: Start difference. First operand has 393 places, 391 transitions, 809 flow. Second operand 3 states and 1167 transitions. [2023-11-26 12:00:16,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 392 transitions, 845 flow [2023-11-26 12:00:16,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 392 transitions, 825 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-26 12:00:16,674 INFO L231 Difference]: Finished difference. Result has 391 places, 392 transitions, 801 flow [2023-11-26 12:00:16,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=421, PETRI_DIFFERENCE_MINUEND_FLOW=789, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=801, PETRI_PLACES=391, PETRI_TRANSITIONS=392} [2023-11-26 12:00:16,676 INFO L281 CegarLoopForPetriNet]: 397 programPoint places, -6 predicate places. [2023-11-26 12:00:16,677 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 392 transitions, 801 flow [2023-11-26 12:00:16,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 384.3333333333333) internal successors, (1153), 3 states have internal predecessors, (1153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:16,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:16,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:16,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 12:00:16,679 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-11-26 12:00:16,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:16,680 INFO L85 PathProgramCache]: Analyzing trace with hash -610532648, now seen corresponding path program 1 times [2023-11-26 12:00:16,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:16,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350728228] [2023-11-26 12:00:16,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:16,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:16,706 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:00:16,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [656311630] [2023-11-26 12:00:16,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:16,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:16,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:16,713 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:16,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 12:00:16,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:16,887 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-26 12:00:16,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:16,988 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-26 12:00:17,020 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 19 treesize of output 18 [2023-11-26 12:00:17,062 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-26 12:00:17,063 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 26 treesize of output 28 [2023-11-26 12:00:17,111 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-26 12:00:17,111 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 33 treesize of output 38 [2023-11-26 12:00:17,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:17,144 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:00:17,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:17,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350728228] [2023-11-26 12:00:17,144 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:00:17,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656311630] [2023-11-26 12:00:17,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656311630] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:17,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:17,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 12:00:17,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619006669] [2023-11-26 12:00:17,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:17,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 12:00:17,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:17,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 12:00:17,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-26 12:00:18,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 292 out of 421 [2023-11-26 12:00:18,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 392 transitions, 801 flow. Second operand has 8 states, 8 states have (on average 294.25) internal successors, (2354), 8 states have internal predecessors, (2354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:18,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:18,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 292 of 421 [2023-11-26 12:00:18,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:18,372 INFO L124 PetriNetUnfolderBase]: 164/1130 cut-off events. [2023-11-26 12:00:18,372 INFO L125 PetriNetUnfolderBase]: For 12/16 co-relation queries the response was YES. [2023-11-26 12:00:18,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1595 conditions, 1130 events. 164/1130 cut-off events. For 12/16 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5129 event pairs, 144 based on Foata normal form. 0/1046 useless extension candidates. Maximal degree in co-relation 1393. Up to 416 conditions per place. [2023-11-26 12:00:18,380 INFO L140 encePairwiseOnDemand]: 411/421 looper letters, 97 selfloop transitions, 9 changer transitions 0/391 dead transitions. [2023-11-26 12:00:18,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 391 transitions, 1011 flow [2023-11-26 12:00:18,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 12:00:18,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-26 12:00:18,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2735 transitions. [2023-11-26 12:00:18,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7218263394035366 [2023-11-26 12:00:18,390 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2735 transitions. [2023-11-26 12:00:18,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2735 transitions. [2023-11-26 12:00:18,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:18,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2735 transitions. [2023-11-26 12:00:18,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 303.8888888888889) internal successors, (2735), 9 states have internal predecessors, (2735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:18,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 421.0) internal successors, (4210), 10 states have internal predecessors, (4210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:18,416 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 421.0) internal successors, (4210), 10 states have internal predecessors, (4210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:18,416 INFO L175 Difference]: Start difference. First operand has 391 places, 392 transitions, 801 flow. Second operand 9 states and 2735 transitions. [2023-11-26 12:00:18,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 391 transitions, 1011 flow [2023-11-26 12:00:18,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 391 transitions, 1009 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 12:00:18,428 INFO L231 Difference]: Finished difference. Result has 397 places, 391 transitions, 815 flow [2023-11-26 12:00:18,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=421, PETRI_DIFFERENCE_MINUEND_FLOW=797, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=815, PETRI_PLACES=397, PETRI_TRANSITIONS=391} [2023-11-26 12:00:18,431 INFO L281 CegarLoopForPetriNet]: 397 programPoint places, 0 predicate places. [2023-11-26 12:00:18,431 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 391 transitions, 815 flow [2023-11-26 12:00:18,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 294.25) internal successors, (2354), 8 states have internal predecessors, (2354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:18,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:18,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:18,449 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-26 12:00:18,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:18,646 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-11-26 12:00:18,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:18,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1230342874, now seen corresponding path program 1 times [2023-11-26 12:00:18,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:18,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546472312] [2023-11-26 12:00:18,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:18,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:18,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:18,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:18,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:18,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546472312] [2023-11-26 12:00:18,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546472312] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:18,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:18,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:00:18,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644226874] [2023-11-26 12:00:18,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:18,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:00:18,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:18,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:00:18,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:00:18,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 383 out of 421 [2023-11-26 12:00:18,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 391 transitions, 815 flow. Second operand has 3 states, 3 states have (on average 384.3333333333333) internal successors, (1153), 3 states have internal predecessors, (1153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:18,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:18,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 383 of 421 [2023-11-26 12:00:18,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:18,933 INFO L124 PetriNetUnfolderBase]: 15/751 cut-off events. [2023-11-26 12:00:18,933 INFO L125 PetriNetUnfolderBase]: For 5/6 co-relation queries the response was YES. [2023-11-26 12:00:18,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 838 conditions, 751 events. 15/751 cut-off events. For 5/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1665 event pairs, 8 based on Foata normal form. 2/706 useless extension candidates. Maximal degree in co-relation 617. Up to 38 conditions per place. [2023-11-26 12:00:18,938 INFO L140 encePairwiseOnDemand]: 418/421 looper letters, 15 selfloop transitions, 2 changer transitions 0/392 dead transitions. [2023-11-26 12:00:18,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 392 transitions, 851 flow [2023-11-26 12:00:18,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:00:18,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:00:18,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1167 transitions. [2023-11-26 12:00:18,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9239904988123515 [2023-11-26 12:00:18,943 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1167 transitions. [2023-11-26 12:00:18,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1167 transitions. [2023-11-26 12:00:18,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:18,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1167 transitions. [2023-11-26 12:00:18,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 389.0) internal successors, (1167), 3 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:18,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 421.0) internal successors, (1684), 4 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:18,953 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 421.0) internal successors, (1684), 4 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:18,953 INFO L175 Difference]: Start difference. First operand has 397 places, 391 transitions, 815 flow. Second operand 3 states and 1167 transitions. [2023-11-26 12:00:18,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 392 transitions, 851 flow [2023-11-26 12:00:18,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 392 transitions, 833 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-11-26 12:00:18,964 INFO L231 Difference]: Finished difference. Result has 392 places, 392 transitions, 809 flow [2023-11-26 12:00:18,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=421, PETRI_DIFFERENCE_MINUEND_FLOW=797, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=809, PETRI_PLACES=392, PETRI_TRANSITIONS=392} [2023-11-26 12:00:18,968 INFO L281 CegarLoopForPetriNet]: 397 programPoint places, -5 predicate places. [2023-11-26 12:00:18,968 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 392 transitions, 809 flow [2023-11-26 12:00:18,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 384.3333333333333) internal successors, (1153), 3 states have internal predecessors, (1153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:18,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:18,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:18,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 12:00:18,970 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-11-26 12:00:18,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:18,970 INFO L85 PathProgramCache]: Analyzing trace with hash -893732395, now seen corresponding path program 1 times [2023-11-26 12:00:18,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:18,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077394413] [2023-11-26 12:00:18,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:18,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:19,025 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:00:19,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1657312943] [2023-11-26 12:00:19,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:19,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:19,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:19,029 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:19,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 12:00:19,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:19,224 INFO L262 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-26 12:00:19,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:19,244 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-26 12:00:19,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-11-26 12:00:19,279 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-26 12:00:19,279 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2023-11-26 12:00:19,315 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-26 12:00:19,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2023-11-26 12:00:19,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:19,345 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:00:19,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:19,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077394413] [2023-11-26 12:00:19,345 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:00:19,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657312943] [2023-11-26 12:00:19,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657312943] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:19,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:19,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 12:00:19,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162585017] [2023-11-26 12:00:19,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:19,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:00:19,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:19,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:00:19,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:00:20,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 331 out of 421 [2023-11-26 12:00:20,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 392 transitions, 809 flow. Second operand has 6 states, 6 states have (on average 335.5) internal successors, (2013), 6 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:20,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:20,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 331 of 421 [2023-11-26 12:00:20,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:20,656 INFO L124 PetriNetUnfolderBase]: 7/723 cut-off events. [2023-11-26 12:00:20,657 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-26 12:00:20,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 932 conditions, 723 events. 7/723 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1301 event pairs, 0 based on Foata normal form. 0/689 useless extension candidates. Maximal degree in co-relation 743. Up to 167 conditions per place. [2023-11-26 12:00:20,661 INFO L140 encePairwiseOnDemand]: 415/421 looper letters, 62 selfloop transitions, 5 changer transitions 0/391 dead transitions. [2023-11-26 12:00:20,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 391 transitions, 941 flow [2023-11-26 12:00:20,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 12:00:20,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 12:00:20,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2054 transitions. [2023-11-26 12:00:20,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8131433095803642 [2023-11-26 12:00:20,669 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2054 transitions. [2023-11-26 12:00:20,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2054 transitions. [2023-11-26 12:00:20,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:20,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2054 transitions. [2023-11-26 12:00:20,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 342.3333333333333) internal successors, (2054), 6 states have internal predecessors, (2054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:20,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:20,685 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:20,685 INFO L175 Difference]: Start difference. First operand has 392 places, 392 transitions, 809 flow. Second operand 6 states and 2054 transitions. [2023-11-26 12:00:20,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 391 transitions, 941 flow [2023-11-26 12:00:20,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 391 transitions, 939 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 12:00:20,695 INFO L231 Difference]: Finished difference. Result has 395 places, 391 transitions, 815 flow [2023-11-26 12:00:20,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=421, PETRI_DIFFERENCE_MINUEND_FLOW=805, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=815, PETRI_PLACES=395, PETRI_TRANSITIONS=391} [2023-11-26 12:00:20,700 INFO L281 CegarLoopForPetriNet]: 397 programPoint places, -2 predicate places. [2023-11-26 12:00:20,700 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 391 transitions, 815 flow [2023-11-26 12:00:20,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 335.5) internal successors, (2013), 6 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:20,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:20,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:20,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:20,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-26 12:00:20,910 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-11-26 12:00:20,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:20,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1528362954, now seen corresponding path program 1 times [2023-11-26 12:00:20,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:20,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125804222] [2023-11-26 12:00:20,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:20,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:20,951 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:00:20,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [712437332] [2023-11-26 12:00:20,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:20,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:20,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:20,956 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:20,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 12:00:21,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:21,178 INFO L262 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-26 12:00:21,188 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:21,201 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-26 12:00:21,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-11-26 12:00:21,235 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-26 12:00:21,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2023-11-26 12:00:21,267 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-26 12:00:21,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 46 [2023-11-26 12:00:21,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:21,294 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:00:21,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:21,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125804222] [2023-11-26 12:00:21,295 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:00:21,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712437332] [2023-11-26 12:00:21,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712437332] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:21,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:21,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 12:00:21,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699303067] [2023-11-26 12:00:21,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:21,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:00:21,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:21,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:00:21,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:00:22,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 421 [2023-11-26 12:00:22,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 391 transitions, 815 flow. Second operand has 6 states, 6 states have (on average 299.3333333333333) internal successors, (1796), 6 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:22,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:22,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 421 [2023-11-26 12:00:22,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:22,497 INFO L124 PetriNetUnfolderBase]: 164/1312 cut-off events. [2023-11-26 12:00:22,497 INFO L125 PetriNetUnfolderBase]: For 15/19 co-relation queries the response was YES. [2023-11-26 12:00:22,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1877 conditions, 1312 events. 164/1312 cut-off events. For 15/19 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 5591 event pairs, 144 based on Foata normal form. 0/1228 useless extension candidates. Maximal degree in co-relation 1434. Up to 504 conditions per place. [2023-11-26 12:00:22,505 INFO L140 encePairwiseOnDemand]: 415/421 looper letters, 99 selfloop transitions, 5 changer transitions 0/390 dead transitions. [2023-11-26 12:00:22,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 390 transitions, 1021 flow [2023-11-26 12:00:22,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 12:00:22,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 12:00:22,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1869 transitions. [2023-11-26 12:00:22,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7399049881235155 [2023-11-26 12:00:22,512 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1869 transitions. [2023-11-26 12:00:22,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1869 transitions. [2023-11-26 12:00:22,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:22,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1869 transitions. [2023-11-26 12:00:22,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 311.5) internal successors, (1869), 6 states have internal predecessors, (1869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:22,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:22,527 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:22,527 INFO L175 Difference]: Start difference. First operand has 395 places, 391 transitions, 815 flow. Second operand 6 states and 1869 transitions. [2023-11-26 12:00:22,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 390 transitions, 1021 flow [2023-11-26 12:00:22,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 390 transitions, 1011 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-26 12:00:22,538 INFO L231 Difference]: Finished difference. Result has 394 places, 390 transitions, 813 flow [2023-11-26 12:00:22,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=421, PETRI_DIFFERENCE_MINUEND_FLOW=803, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=813, PETRI_PLACES=394, PETRI_TRANSITIONS=390} [2023-11-26 12:00:22,540 INFO L281 CegarLoopForPetriNet]: 397 programPoint places, -3 predicate places. [2023-11-26 12:00:22,540 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 390 transitions, 813 flow [2023-11-26 12:00:22,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 299.3333333333333) internal successors, (1796), 6 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:22,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:22,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:22,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:22,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-26 12:00:22,749 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-11-26 12:00:22,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:22,750 INFO L85 PathProgramCache]: Analyzing trace with hash 359080098, now seen corresponding path program 1 times [2023-11-26 12:00:22,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:22,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977620628] [2023-11-26 12:00:22,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:22,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:22,782 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:00:22,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [912367207] [2023-11-26 12:00:22,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:22,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:22,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:22,784 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:22,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 12:00:23,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:23,024 INFO L262 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-26 12:00:23,029 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:23,053 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-26 12:00:23,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-11-26 12:00:23,098 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-26 12:00:23,098 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2023-11-26 12:00:23,134 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-26 12:00:23,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2023-11-26 12:00:23,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:23,163 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:00:23,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:23,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977620628] [2023-11-26 12:00:23,164 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:00:23,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912367207] [2023-11-26 12:00:23,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912367207] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:23,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:23,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 12:00:23,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505737224] [2023-11-26 12:00:23,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:23,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:00:23,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:23,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:00:23,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:00:23,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 421 [2023-11-26 12:00:23,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 390 transitions, 813 flow. Second operand has 6 states, 6 states have (on average 304.0) internal successors, (1824), 6 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:23,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:23,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 421 [2023-11-26 12:00:23,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:24,004 INFO L124 PetriNetUnfolderBase]: 164/1308 cut-off events. [2023-11-26 12:00:24,004 INFO L125 PetriNetUnfolderBase]: For 15/19 co-relation queries the response was YES. [2023-11-26 12:00:24,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1857 conditions, 1308 events. 164/1308 cut-off events. For 15/19 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 5578 event pairs, 144 based on Foata normal form. 0/1228 useless extension candidates. Maximal degree in co-relation 1450. Up to 488 conditions per place. [2023-11-26 12:00:24,013 INFO L140 encePairwiseOnDemand]: 415/421 looper letters, 95 selfloop transitions, 5 changer transitions 0/389 dead transitions. [2023-11-26 12:00:24,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 389 transitions, 1011 flow [2023-11-26 12:00:24,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 12:00:24,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 12:00:24,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1889 transitions. [2023-11-26 12:00:24,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7478226444972288 [2023-11-26 12:00:24,021 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1889 transitions. [2023-11-26 12:00:24,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1889 transitions. [2023-11-26 12:00:24,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:24,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1889 transitions. [2023-11-26 12:00:24,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 314.8333333333333) internal successors, (1889), 6 states have internal predecessors, (1889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:24,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:24,036 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:24,037 INFO L175 Difference]: Start difference. First operand has 394 places, 390 transitions, 813 flow. Second operand 6 states and 1889 transitions. [2023-11-26 12:00:24,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 389 transitions, 1011 flow [2023-11-26 12:00:24,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 389 transitions, 1001 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-26 12:00:24,047 INFO L231 Difference]: Finished difference. Result has 393 places, 389 transitions, 811 flow [2023-11-26 12:00:24,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=421, PETRI_DIFFERENCE_MINUEND_FLOW=801, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=811, PETRI_PLACES=393, PETRI_TRANSITIONS=389} [2023-11-26 12:00:24,051 INFO L281 CegarLoopForPetriNet]: 397 programPoint places, -4 predicate places. [2023-11-26 12:00:24,052 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 389 transitions, 811 flow [2023-11-26 12:00:24,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 304.0) internal successors, (1824), 6 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:24,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:24,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:24,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:24,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:24,261 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-11-26 12:00:24,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:24,261 INFO L85 PathProgramCache]: Analyzing trace with hash -159879217, now seen corresponding path program 1 times [2023-11-26 12:00:24,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:24,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574024810] [2023-11-26 12:00:24,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:24,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:24,297 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:00:24,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1618355975] [2023-11-26 12:00:24,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:24,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:24,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:24,299 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:24,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 12:00:24,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:24,557 INFO L262 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-26 12:00:24,562 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:24,573 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-26 12:00:24,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-11-26 12:00:24,617 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-26 12:00:24,617 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2023-11-26 12:00:24,651 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-26 12:00:24,654 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 46 [2023-11-26 12:00:24,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:24,680 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:00:24,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:24,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574024810] [2023-11-26 12:00:24,680 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:00:24,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618355975] [2023-11-26 12:00:24,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618355975] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:24,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:24,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 12:00:24,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391826791] [2023-11-26 12:00:24,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:24,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:00:24,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:24,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:00:24,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:00:25,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 421 [2023-11-26 12:00:25,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 389 transitions, 811 flow. Second operand has 6 states, 6 states have (on average 304.0) internal successors, (1824), 6 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:25,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:25,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 421 [2023-11-26 12:00:25,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:25,520 INFO L124 PetriNetUnfolderBase]: 164/1304 cut-off events. [2023-11-26 12:00:25,521 INFO L125 PetriNetUnfolderBase]: For 11/15 co-relation queries the response was YES. [2023-11-26 12:00:25,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1853 conditions, 1304 events. 164/1304 cut-off events. For 11/15 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 5496 event pairs, 144 based on Foata normal form. 0/1228 useless extension candidates. Maximal degree in co-relation 1465. Up to 488 conditions per place. [2023-11-26 12:00:25,530 INFO L140 encePairwiseOnDemand]: 415/421 looper letters, 95 selfloop transitions, 5 changer transitions 0/388 dead transitions. [2023-11-26 12:00:25,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 388 transitions, 1009 flow [2023-11-26 12:00:25,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 12:00:25,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 12:00:25,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1889 transitions. [2023-11-26 12:00:25,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7478226444972288 [2023-11-26 12:00:25,537 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1889 transitions. [2023-11-26 12:00:25,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1889 transitions. [2023-11-26 12:00:25,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:25,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1889 transitions. [2023-11-26 12:00:25,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 314.8333333333333) internal successors, (1889), 6 states have internal predecessors, (1889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:25,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:25,551 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:25,552 INFO L175 Difference]: Start difference. First operand has 393 places, 389 transitions, 811 flow. Second operand 6 states and 1889 transitions. [2023-11-26 12:00:25,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 388 transitions, 1009 flow [2023-11-26 12:00:25,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 388 transitions, 999 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-26 12:00:25,562 INFO L231 Difference]: Finished difference. Result has 392 places, 388 transitions, 809 flow [2023-11-26 12:00:25,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=421, PETRI_DIFFERENCE_MINUEND_FLOW=799, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=809, PETRI_PLACES=392, PETRI_TRANSITIONS=388} [2023-11-26 12:00:25,564 INFO L281 CegarLoopForPetriNet]: 397 programPoint places, -5 predicate places. [2023-11-26 12:00:25,565 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 388 transitions, 809 flow [2023-11-26 12:00:25,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 304.0) internal successors, (1824), 6 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:25,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:25,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:25,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:25,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:25,773 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-11-26 12:00:25,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:25,774 INFO L85 PathProgramCache]: Analyzing trace with hash -478380068, now seen corresponding path program 1 times [2023-11-26 12:00:25,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:25,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645064593] [2023-11-26 12:00:25,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:25,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:25,823 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:00:25,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1665762579] [2023-11-26 12:00:25,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:25,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:25,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:25,825 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:25,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 12:00:26,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:26,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-26 12:00:26,095 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:26,107 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-26 12:00:26,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-11-26 12:00:26,135 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-26 12:00:26,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2023-11-26 12:00:26,163 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-26 12:00:26,163 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2023-11-26 12:00:26,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:26,187 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:00:26,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:26,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645064593] [2023-11-26 12:00:26,188 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:00:26,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665762579] [2023-11-26 12:00:26,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665762579] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:26,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:26,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 12:00:26,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402970942] [2023-11-26 12:00:26,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:26,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:00:26,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:26,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:00:26,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:00:26,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 421 [2023-11-26 12:00:26,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 388 transitions, 809 flow. Second operand has 6 states, 6 states have (on average 300.5) internal successors, (1803), 6 states have internal predecessors, (1803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:26,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:26,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 421 [2023-11-26 12:00:26,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:27,079 INFO L124 PetriNetUnfolderBase]: 164/1300 cut-off events. [2023-11-26 12:00:27,079 INFO L125 PetriNetUnfolderBase]: For 15/19 co-relation queries the response was YES. [2023-11-26 12:00:27,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1869 conditions, 1300 events. 164/1300 cut-off events. For 15/19 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 5487 event pairs, 144 based on Foata normal form. 0/1228 useless extension candidates. Maximal degree in co-relation 1478. Up to 508 conditions per place. [2023-11-26 12:00:27,088 INFO L140 encePairwiseOnDemand]: 415/421 looper letters, 100 selfloop transitions, 5 changer transitions 0/387 dead transitions. [2023-11-26 12:00:27,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 387 transitions, 1017 flow [2023-11-26 12:00:27,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 12:00:27,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 12:00:27,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1864 transitions. [2023-11-26 12:00:27,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7379255740300871 [2023-11-26 12:00:27,095 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1864 transitions. [2023-11-26 12:00:27,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1864 transitions. [2023-11-26 12:00:27,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:27,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1864 transitions. [2023-11-26 12:00:27,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 310.6666666666667) internal successors, (1864), 6 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:27,107 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:27,108 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:27,108 INFO L175 Difference]: Start difference. First operand has 392 places, 388 transitions, 809 flow. Second operand 6 states and 1864 transitions. [2023-11-26 12:00:27,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 387 transitions, 1017 flow [2023-11-26 12:00:27,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 387 transitions, 1007 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-26 12:00:27,119 INFO L231 Difference]: Finished difference. Result has 391 places, 387 transitions, 807 flow [2023-11-26 12:00:27,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=421, PETRI_DIFFERENCE_MINUEND_FLOW=797, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=807, PETRI_PLACES=391, PETRI_TRANSITIONS=387} [2023-11-26 12:00:27,120 INFO L281 CegarLoopForPetriNet]: 397 programPoint places, -6 predicate places. [2023-11-26 12:00:27,120 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 387 transitions, 807 flow [2023-11-26 12:00:27,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 300.5) internal successors, (1803), 6 states have internal predecessors, (1803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:27,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:27,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:27,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:27,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-26 12:00:27,329 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-11-26 12:00:27,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:27,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1574502272, now seen corresponding path program 1 times [2023-11-26 12:00:27,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:27,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984400503] [2023-11-26 12:00:27,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:27,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:27,375 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:00:27,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [117943054] [2023-11-26 12:00:27,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:27,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:27,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:27,377 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:27,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 12:00:27,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:27,665 INFO L262 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 12:00:27,669 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:27,835 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:27,836 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:00:28,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:28,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:28,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984400503] [2023-11-26 12:00:28,035 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:00:28,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117943054] [2023-11-26 12:00:28,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117943054] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:00:28,035 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 12:00:28,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-26 12:00:28,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764672691] [2023-11-26 12:00:28,039 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 12:00:28,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 12:00:28,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:28,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 12:00:28,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-26 12:00:28,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 380 out of 421 [2023-11-26 12:00:28,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 387 transitions, 807 flow. Second operand has 8 states, 8 states have (on average 381.75) internal successors, (3054), 8 states have internal predecessors, (3054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:28,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:28,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 380 of 421 [2023-11-26 12:00:28,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:28,318 INFO L124 PetriNetUnfolderBase]: 15/917 cut-off events. [2023-11-26 12:00:28,319 INFO L125 PetriNetUnfolderBase]: For 7/8 co-relation queries the response was YES. [2023-11-26 12:00:28,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1031 conditions, 917 events. 15/917 cut-off events. For 7/8 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1205 event pairs, 8 based on Foata normal form. 4/894 useless extension candidates. Maximal degree in co-relation 809. Up to 38 conditions per place. [2023-11-26 12:00:28,323 INFO L140 encePairwiseOnDemand]: 415/421 looper letters, 19 selfloop transitions, 9 changer transitions 0/395 dead transitions. [2023-11-26 12:00:28,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 395 transitions, 881 flow [2023-11-26 12:00:28,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 12:00:28,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-26 12:00:28,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3450 transitions. [2023-11-26 12:00:28,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9105304829770388 [2023-11-26 12:00:28,335 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3450 transitions. [2023-11-26 12:00:28,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3450 transitions. [2023-11-26 12:00:28,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:28,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3450 transitions. [2023-11-26 12:00:28,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 383.3333333333333) internal successors, (3450), 9 states have internal predecessors, (3450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:28,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 421.0) internal successors, (4210), 10 states have internal predecessors, (4210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:28,358 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 421.0) internal successors, (4210), 10 states have internal predecessors, (4210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:28,358 INFO L175 Difference]: Start difference. First operand has 391 places, 387 transitions, 807 flow. Second operand 9 states and 3450 transitions. [2023-11-26 12:00:28,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 395 transitions, 881 flow [2023-11-26 12:00:28,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 395 transitions, 871 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-26 12:00:28,369 INFO L231 Difference]: Finished difference. Result has 397 places, 393 transitions, 847 flow [2023-11-26 12:00:28,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=421, PETRI_DIFFERENCE_MINUEND_FLOW=797, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=847, PETRI_PLACES=397, PETRI_TRANSITIONS=393} [2023-11-26 12:00:28,370 INFO L281 CegarLoopForPetriNet]: 397 programPoint places, 0 predicate places. [2023-11-26 12:00:28,370 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 393 transitions, 847 flow [2023-11-26 12:00:28,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 381.75) internal successors, (3054), 8 states have internal predecessors, (3054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:28,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:28,372 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:28,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:28,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:28,580 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-11-26 12:00:28,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:28,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1583784128, now seen corresponding path program 2 times [2023-11-26 12:00:28,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:28,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967872554] [2023-11-26 12:00:28,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:28,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:28,681 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:00:28,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1701685206] [2023-11-26 12:00:28,681 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 12:00:28,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:28,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:28,683 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:28,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-26 12:00:29,035 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 12:00:29,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 12:00:29,037 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-26 12:00:29,045 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:29,101 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-11-26 12:00:29,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2023-11-26 12:00:29,143 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-26 12:00:29,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 43 [2023-11-26 12:00:29,177 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-26 12:00:29,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 58 [2023-11-26 12:00:29,207 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2023-11-26 12:00:29,208 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:00:29,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:29,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967872554] [2023-11-26 12:00:29,208 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:00:29,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701685206] [2023-11-26 12:00:29,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701685206] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:29,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:29,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 12:00:29,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22463666] [2023-11-26 12:00:29,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:29,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:00:29,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:29,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:00:29,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:00:30,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 421 [2023-11-26 12:00:30,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 393 transitions, 847 flow. Second operand has 6 states, 6 states have (on average 329.3333333333333) internal successors, (1976), 6 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:30,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:30,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 421 [2023-11-26 12:00:30,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:30,484 INFO L124 PetriNetUnfolderBase]: 7/891 cut-off events. [2023-11-26 12:00:30,484 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-11-26 12:00:30,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1179 conditions, 891 events. 7/891 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 848 event pairs, 0 based on Foata normal form. 0/871 useless extension candidates. Maximal degree in co-relation 988. Up to 214 conditions per place. [2023-11-26 12:00:30,488 INFO L140 encePairwiseOnDemand]: 409/421 looper letters, 65 selfloop transitions, 10 changer transitions 0/391 dead transitions. [2023-11-26 12:00:30,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 391 transitions, 993 flow [2023-11-26 12:00:30,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 12:00:30,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 12:00:30,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2009 transitions. [2023-11-26 12:00:30,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7953285827395091 [2023-11-26 12:00:30,497 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2009 transitions. [2023-11-26 12:00:30,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2009 transitions. [2023-11-26 12:00:30,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:30,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2009 transitions. [2023-11-26 12:00:30,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 334.8333333333333) internal successors, (2009), 6 states have internal predecessors, (2009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:30,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:30,513 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:30,513 INFO L175 Difference]: Start difference. First operand has 397 places, 393 transitions, 847 flow. Second operand 6 states and 2009 transitions. [2023-11-26 12:00:30,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 391 transitions, 993 flow [2023-11-26 12:00:30,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 391 transitions, 987 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-26 12:00:30,525 INFO L231 Difference]: Finished difference. Result has 399 places, 391 transitions, 857 flow [2023-11-26 12:00:30,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=421, PETRI_DIFFERENCE_MINUEND_FLOW=837, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=857, PETRI_PLACES=399, PETRI_TRANSITIONS=391} [2023-11-26 12:00:30,527 INFO L281 CegarLoopForPetriNet]: 397 programPoint places, 2 predicate places. [2023-11-26 12:00:30,527 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 391 transitions, 857 flow [2023-11-26 12:00:30,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 329.3333333333333) internal successors, (1976), 6 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:30,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:30,529 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:30,535 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-26 12:00:30,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:30,735 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-11-26 12:00:30,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:30,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1856895001, now seen corresponding path program 1 times [2023-11-26 12:00:30,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:30,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46678642] [2023-11-26 12:00:30,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:30,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:30,833 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:00:30,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [202645102] [2023-11-26 12:00:30,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:30,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:30,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:30,849 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:30,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-26 12:00:31,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:31,431 INFO L262 TraceCheckSpWp]: Trace formula consists of 1424 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 12:00:31,439 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:31,825 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 1 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:31,825 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:00:32,363 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 1 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:32,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:32,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46678642] [2023-11-26 12:00:32,369 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:00:32,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202645102] [2023-11-26 12:00:32,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202645102] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:00:32,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 12:00:32,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-11-26 12:00:32,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507108158] [2023-11-26 12:00:32,370 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 12:00:32,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-26 12:00:32,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:32,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-26 12:00:32,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-11-26 12:00:32,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 380 out of 421 [2023-11-26 12:00:32,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 391 transitions, 857 flow. Second operand has 16 states, 16 states have (on average 381.875) internal successors, (6110), 16 states have internal predecessors, (6110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:32,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:32,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 380 of 421 [2023-11-26 12:00:32,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:33,243 INFO L124 PetriNetUnfolderBase]: 15/1643 cut-off events. [2023-11-26 12:00:33,243 INFO L125 PetriNetUnfolderBase]: For 55/56 co-relation queries the response was YES. [2023-11-26 12:00:33,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1854 conditions, 1643 events. 15/1643 cut-off events. For 55/56 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1200 event pairs, 8 based on Foata normal form. 8/1626 useless extension candidates. Maximal degree in co-relation 1629. Up to 38 conditions per place. [2023-11-26 12:00:33,254 INFO L140 encePairwiseOnDemand]: 415/421 looper letters, 23 selfloop transitions, 21 changer transitions 0/409 dead transitions. [2023-11-26 12:00:33,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 409 transitions, 1033 flow [2023-11-26 12:00:33,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-26 12:00:33,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-26 12:00:33,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 8028 transitions. [2023-11-26 12:00:33,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9080420766881574 [2023-11-26 12:00:33,278 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 8028 transitions. [2023-11-26 12:00:33,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 8028 transitions. [2023-11-26 12:00:33,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:33,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 8028 transitions. [2023-11-26 12:00:33,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 382.2857142857143) internal successors, (8028), 21 states have internal predecessors, (8028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:33,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 421.0) internal successors, (9262), 22 states have internal predecessors, (9262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:33,335 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 421.0) internal successors, (9262), 22 states have internal predecessors, (9262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:33,335 INFO L175 Difference]: Start difference. First operand has 399 places, 391 transitions, 857 flow. Second operand 21 states and 8028 transitions. [2023-11-26 12:00:33,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 409 transitions, 1033 flow [2023-11-26 12:00:33,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 409 transitions, 1013 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-26 12:00:33,349 INFO L231 Difference]: Finished difference. Result has 419 places, 404 transitions, 967 flow [2023-11-26 12:00:33,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=421, PETRI_DIFFERENCE_MINUEND_FLOW=837, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=967, PETRI_PLACES=419, PETRI_TRANSITIONS=404} [2023-11-26 12:00:33,351 INFO L281 CegarLoopForPetriNet]: 397 programPoint places, 22 predicate places. [2023-11-26 12:00:33,351 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 404 transitions, 967 flow [2023-11-26 12:00:33,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 381.875) internal successors, (6110), 16 states have internal predecessors, (6110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:33,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:33,354 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:33,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:33,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-26 12:00:33,564 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-11-26 12:00:33,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:33,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1460041881, now seen corresponding path program 2 times [2023-11-26 12:00:33,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:33,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353067868] [2023-11-26 12:00:33,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:33,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:33,722 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:00:33,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1113498664] [2023-11-26 12:00:33,728 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 12:00:33,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:33,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:33,733 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:33,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-26 12:00:34,300 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 12:00:34,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 12:00:34,304 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-26 12:00:34,322 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:34,356 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-26 12:00:34,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-11-26 12:00:34,386 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-26 12:00:34,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2023-11-26 12:00:34,412 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-26 12:00:34,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2023-11-26 12:00:34,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1919 trivial. 0 not checked. [2023-11-26 12:00:34,438 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:00:34,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:34,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353067868] [2023-11-26 12:00:34,441 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:00:34,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113498664] [2023-11-26 12:00:34,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113498664] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:34,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:34,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 12:00:34,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332199677] [2023-11-26 12:00:34,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:34,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:00:34,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:34,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:00:34,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:00:35,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 331 out of 421 [2023-11-26 12:00:35,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 404 transitions, 967 flow. Second operand has 6 states, 6 states have (on average 338.3333333333333) internal successors, (2030), 6 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:35,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:35,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 331 of 421 [2023-11-26 12:00:35,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:36,040 INFO L124 PetriNetUnfolderBase]: 26/1705 cut-off events. [2023-11-26 12:00:36,040 INFO L125 PetriNetUnfolderBase]: For 79/80 co-relation queries the response was YES. [2023-11-26 12:00:36,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2366 conditions, 1705 events. 26/1705 cut-off events. For 79/80 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1632 event pairs, 16 based on Foata normal form. 0/1677 useless extension candidates. Maximal degree in co-relation 2047. Up to 471 conditions per place. [2023-11-26 12:00:36,048 INFO L140 encePairwiseOnDemand]: 415/421 looper letters, 62 selfloop transitions, 5 changer transitions 0/403 dead transitions. [2023-11-26 12:00:36,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 403 transitions, 1099 flow [2023-11-26 12:00:36,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 12:00:36,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 12:00:36,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2054 transitions. [2023-11-26 12:00:36,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8131433095803642 [2023-11-26 12:00:36,057 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2054 transitions. [2023-11-26 12:00:36,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2054 transitions. [2023-11-26 12:00:36,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:36,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2054 transitions. [2023-11-26 12:00:36,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 342.3333333333333) internal successors, (2054), 6 states have internal predecessors, (2054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:36,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:36,071 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:36,072 INFO L175 Difference]: Start difference. First operand has 419 places, 404 transitions, 967 flow. Second operand 6 states and 2054 transitions. [2023-11-26 12:00:36,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 403 transitions, 1099 flow [2023-11-26 12:00:36,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 403 transitions, 1075 flow, removed 6 selfloop flow, removed 6 redundant places. [2023-11-26 12:00:36,086 INFO L231 Difference]: Finished difference. Result has 417 places, 403 transitions, 951 flow [2023-11-26 12:00:36,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=421, PETRI_DIFFERENCE_MINUEND_FLOW=941, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=951, PETRI_PLACES=417, PETRI_TRANSITIONS=403} [2023-11-26 12:00:36,088 INFO L281 CegarLoopForPetriNet]: 397 programPoint places, 20 predicate places. [2023-11-26 12:00:36,088 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 403 transitions, 951 flow [2023-11-26 12:00:36,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 338.3333333333333) internal successors, (2030), 6 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:36,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:36,090 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:36,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:36,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-26 12:00:36,305 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-11-26 12:00:36,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:36,305 INFO L85 PathProgramCache]: Analyzing trace with hash 805919436, now seen corresponding path program 1 times [2023-11-26 12:00:36,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:36,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403902819] [2023-11-26 12:00:36,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:36,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:36,459 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:00:36,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1774545429] [2023-11-26 12:00:36,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:36,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:36,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:36,461 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:36,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-26 12:00:37,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:37,531 INFO L262 TraceCheckSpWp]: Trace formula consists of 2937 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-26 12:00:37,545 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:38,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 1 proven. 1918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:38,612 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:00:39,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 1 proven. 1918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:39,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:39,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403902819] [2023-11-26 12:00:39,776 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:00:39,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774545429] [2023-11-26 12:00:39,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774545429] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:00:39,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 12:00:39,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2023-11-26 12:00:39,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736079653] [2023-11-26 12:00:39,777 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 12:00:39,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-26 12:00:39,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:39,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-26 12:00:39,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2023-11-26 12:00:39,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 380 out of 421 [2023-11-26 12:00:39,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 403 transitions, 951 flow. Second operand has 32 states, 32 states have (on average 381.9375) internal successors, (12222), 32 states have internal predecessors, (12222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:39,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:39,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 380 of 421 [2023-11-26 12:00:39,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:41,786 INFO L124 PetriNetUnfolderBase]: 15/3098 cut-off events. [2023-11-26 12:00:41,786 INFO L125 PetriNetUnfolderBase]: For 571/572 co-relation queries the response was YES. [2023-11-26 12:00:41,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3599 conditions, 3098 events. 15/3098 cut-off events. For 571/572 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1200 event pairs, 8 based on Foata normal form. 16/3090 useless extension candidates. Maximal degree in co-relation 3369. Up to 52 conditions per place. [2023-11-26 12:00:41,796 INFO L140 encePairwiseOnDemand]: 415/421 looper letters, 31 selfloop transitions, 45 changer transitions 0/440 dead transitions. [2023-11-26 12:00:41,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 440 transitions, 1375 flow [2023-11-26 12:00:41,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-11-26 12:00:41,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2023-11-26 12:00:41,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 17184 transitions. [2023-11-26 12:00:41,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.907046714172605 [2023-11-26 12:00:41,820 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 17184 transitions. [2023-11-26 12:00:41,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 17184 transitions. [2023-11-26 12:00:41,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:41,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 17184 transitions. [2023-11-26 12:00:41,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 381.8666666666667) internal successors, (17184), 45 states have internal predecessors, (17184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:41,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 421.0) internal successors, (19366), 46 states have internal predecessors, (19366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:41,885 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 421.0) internal successors, (19366), 46 states have internal predecessors, (19366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:41,885 INFO L175 Difference]: Start difference. First operand has 417 places, 403 transitions, 951 flow. Second operand 45 states and 17184 transitions. [2023-11-26 12:00:41,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 440 transitions, 1375 flow [2023-11-26 12:00:41,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 440 transitions, 1365 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-26 12:00:41,899 INFO L231 Difference]: Finished difference. Result has 465 places, 428 transitions, 1243 flow [2023-11-26 12:00:41,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=421, PETRI_DIFFERENCE_MINUEND_FLOW=941, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=1243, PETRI_PLACES=465, PETRI_TRANSITIONS=428} [2023-11-26 12:00:41,900 INFO L281 CegarLoopForPetriNet]: 397 programPoint places, 68 predicate places. [2023-11-26 12:00:41,900 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 428 transitions, 1243 flow [2023-11-26 12:00:41,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 381.9375) internal successors, (12222), 32 states have internal predecessors, (12222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:41,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:41,904 INFO L208 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:41,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:42,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-26 12:00:42,117 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-11-26 12:00:42,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:42,118 INFO L85 PathProgramCache]: Analyzing trace with hash 250428364, now seen corresponding path program 2 times [2023-11-26 12:00:42,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:42,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531608875] [2023-11-26 12:00:42,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:42,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:42,485 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:00:42,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2067518298] [2023-11-26 12:00:42,485 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 12:00:42,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:42,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:42,487 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:42,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-26 12:00:43,577 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 12:00:43,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 12:00:43,583 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-26 12:00:43,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:43,658 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-26 12:00:43,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-11-26 12:00:43,687 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-26 12:00:43,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2023-11-26 12:00:43,715 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-26 12:00:43,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2023-11-26 12:00:43,748 INFO L134 CoverageAnalysis]: Checked inductivity of 9571 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9571 trivial. 0 not checked. [2023-11-26 12:00:43,749 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:00:43,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:43,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531608875] [2023-11-26 12:00:43,749 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:00:43,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067518298] [2023-11-26 12:00:43,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067518298] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:43,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:43,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 12:00:43,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56043554] [2023-11-26 12:00:43,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:43,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:00:43,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:43,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:00:43,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:00:44,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 421 [2023-11-26 12:00:44,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 428 transitions, 1243 flow. Second operand has 6 states, 6 states have (on average 303.1666666666667) internal successors, (1819), 6 states have internal predecessors, (1819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:44,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:44,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 421 [2023-11-26 12:00:44,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:46,618 INFO L124 PetriNetUnfolderBase]: 203/3815 cut-off events. [2023-11-26 12:00:46,619 INFO L125 PetriNetUnfolderBase]: For 468/473 co-relation queries the response was YES. [2023-11-26 12:00:46,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5721 conditions, 3815 events. 203/3815 cut-off events. For 468/473 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 6955 event pairs, 180 based on Foata normal form. 0/3735 useless extension candidates. Maximal degree in co-relation 4382. Up to 1408 conditions per place. [2023-11-26 12:00:46,637 INFO L140 encePairwiseOnDemand]: 415/421 looper letters, 100 selfloop transitions, 5 changer transitions 0/427 dead transitions. [2023-11-26 12:00:46,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 427 transitions, 1451 flow [2023-11-26 12:00:46,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 12:00:46,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 12:00:46,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1864 transitions. [2023-11-26 12:00:46,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7379255740300871 [2023-11-26 12:00:46,640 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1864 transitions. [2023-11-26 12:00:46,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1864 transitions. [2023-11-26 12:00:46,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:46,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1864 transitions. [2023-11-26 12:00:46,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 310.6666666666667) internal successors, (1864), 6 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:46,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:46,647 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:46,647 INFO L175 Difference]: Start difference. First operand has 465 places, 428 transitions, 1243 flow. Second operand 6 states and 1864 transitions. [2023-11-26 12:00:46,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 427 transitions, 1451 flow [2023-11-26 12:00:46,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 427 transitions, 1395 flow, removed 10 selfloop flow, removed 18 redundant places. [2023-11-26 12:00:46,667 INFO L231 Difference]: Finished difference. Result has 451 places, 427 transitions, 1195 flow [2023-11-26 12:00:46,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=421, PETRI_DIFFERENCE_MINUEND_FLOW=1185, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1195, PETRI_PLACES=451, PETRI_TRANSITIONS=427} [2023-11-26 12:00:46,668 INFO L281 CegarLoopForPetriNet]: 397 programPoint places, 54 predicate places. [2023-11-26 12:00:46,669 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 427 transitions, 1195 flow [2023-11-26 12:00:46,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 303.1666666666667) internal successors, (1819), 6 states have internal predecessors, (1819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:46,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:46,671 INFO L208 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:46,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:46,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-26 12:00:46,880 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-11-26 12:00:46,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:46,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1780922273, now seen corresponding path program 1 times [2023-11-26 12:00:46,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:46,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088268602] [2023-11-26 12:00:46,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:46,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:47,227 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:00:47,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1076562933] [2023-11-26 12:00:47,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:47,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:47,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:47,229 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:47,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-26 12:00:49,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:49,223 INFO L262 TraceCheckSpWp]: Trace formula consists of 5936 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 12:00:49,249 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:49,307 INFO L134 CoverageAnalysis]: Checked inductivity of 9571 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9571 trivial. 0 not checked. [2023-11-26 12:00:49,308 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:00:49,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:49,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088268602] [2023-11-26 12:00:49,308 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:00:49,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076562933] [2023-11-26 12:00:49,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076562933] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:49,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:49,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:00:49,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414881086] [2023-11-26 12:00:49,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:49,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:00:49,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:49,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:00:49,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:00:49,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 383 out of 421 [2023-11-26 12:00:49,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 427 transitions, 1195 flow. Second operand has 3 states, 3 states have (on average 384.3333333333333) internal successors, (1153), 3 states have internal predecessors, (1153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:49,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:49,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 383 of 421 [2023-11-26 12:00:49,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:50,937 INFO L124 PetriNetUnfolderBase]: 38/3310 cut-off events. [2023-11-26 12:00:50,937 INFO L125 PetriNetUnfolderBase]: For 518/522 co-relation queries the response was YES. [2023-11-26 12:00:50,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3834 conditions, 3310 events. 38/3310 cut-off events. For 518/522 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2730 event pairs, 0 based on Foata normal form. 2/3262 useless extension candidates. Maximal degree in co-relation 3311. Up to 72 conditions per place. [2023-11-26 12:00:50,948 INFO L140 encePairwiseOnDemand]: 418/421 looper letters, 22 selfloop transitions, 2 changer transitions 0/435 dead transitions. [2023-11-26 12:00:50,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 435 transitions, 1259 flow [2023-11-26 12:00:50,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:00:50,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:00:50,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1174 transitions. [2023-11-26 12:00:50,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9295328582739509 [2023-11-26 12:00:50,951 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1174 transitions. [2023-11-26 12:00:50,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1174 transitions. [2023-11-26 12:00:50,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:50,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1174 transitions. [2023-11-26 12:00:50,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 391.3333333333333) internal successors, (1174), 3 states have internal predecessors, (1174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:50,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 421.0) internal successors, (1684), 4 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:50,955 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 421.0) internal successors, (1684), 4 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:50,955 INFO L175 Difference]: Start difference. First operand has 451 places, 427 transitions, 1195 flow. Second operand 3 states and 1174 transitions. [2023-11-26 12:00:50,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 435 transitions, 1259 flow [2023-11-26 12:00:50,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 435 transitions, 1249 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-26 12:00:50,975 INFO L231 Difference]: Finished difference. Result has 449 places, 427 transitions, 1193 flow [2023-11-26 12:00:50,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=421, PETRI_DIFFERENCE_MINUEND_FLOW=1185, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1193, PETRI_PLACES=449, PETRI_TRANSITIONS=427} [2023-11-26 12:00:50,977 INFO L281 CegarLoopForPetriNet]: 397 programPoint places, 52 predicate places. [2023-11-26 12:00:50,977 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 427 transitions, 1193 flow [2023-11-26 12:00:50,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 384.3333333333333) internal successors, (1153), 3 states have internal predecessors, (1153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:50,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:50,979 INFO L208 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:51,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:51,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-26 12:00:51,201 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-11-26 12:00:51,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:51,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1779821155, now seen corresponding path program 1 times [2023-11-26 12:00:51,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:51,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114897749] [2023-11-26 12:00:51,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:51,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:51,496 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:00:51,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [297870852] [2023-11-26 12:00:51,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:51,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:51,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:51,501 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:51,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b02a7b-7b5a-4b0a-94f4-9677a8495c24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-26 12:00:53,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:53,832 INFO L262 TraceCheckSpWp]: Trace formula consists of 5960 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-26 12:00:53,869 INFO L285 TraceCheckSpWp]: Computing forward predicates...