./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx --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 2c579ed20cf5b381709dcc4ef9fbcf839f80c68ac017a29b947b11bd3a57dd56 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:13:41,127 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:13:41,207 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-21 22:13:41,211 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:13:41,212 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:13:41,255 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:13:41,256 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:13:41,256 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:13:41,257 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:13:41,262 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:13:41,264 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:13:41,264 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:13:41,265 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:13:41,266 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:13:41,267 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:13:41,267 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:13:41,268 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:13:41,268 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:13:41,269 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:13:41,269 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:13:41,269 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:13:41,270 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:13:41,271 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-21 22:13:41,271 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:13:41,271 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:13:41,272 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:13:41,272 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:13:41,273 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:13:41,273 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:13:41,274 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:13:41,274 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:13:41,275 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:13:41,275 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:13:41,276 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:13:41,276 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:13:41,276 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:13:41,276 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:13:41,277 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:13:41,277 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:13:41,277 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:13:41,278 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:13:41,278 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_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c579ed20cf5b381709dcc4ef9fbcf839f80c68ac017a29b947b11bd3a57dd56 [2023-11-21 22:13:41,601 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:13:41,632 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:13:41,635 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:13:41,637 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:13:41,637 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:13:41,638 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c [2023-11-21 22:13:44,792 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:13:45,020 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:13:45,021 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c [2023-11-21 22:13:45,032 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/data/7d917d419/b72c5ccbe742494eb7994941d8ba65b1/FLAG289b079c4 [2023-11-21 22:13:45,048 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/data/7d917d419/b72c5ccbe742494eb7994941d8ba65b1 [2023-11-21 22:13:45,051 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:13:45,053 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:13:45,054 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:13:45,055 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:13:45,065 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:13:45,066 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:13:45" (1/1) ... [2023-11-21 22:13:45,067 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@416ab4f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:45, skipping insertion in model container [2023-11-21 22:13:45,068 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:13:45" (1/1) ... [2023-11-21 22:13:45,106 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:13:45,422 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:13:45,441 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:13:45,506 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:13:45,529 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:13:45,530 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:45 WrapperNode [2023-11-21 22:13:45,530 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:13:45,532 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:13:45,532 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:13:45,532 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:13:45,540 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:45" (1/1) ... [2023-11-21 22:13:45,568 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:45" (1/1) ... [2023-11-21 22:13:45,632 INFO L138 Inliner]: procedures = 25, calls = 42, calls flagged for inlining = 14, calls inlined = 18, statements flattened = 353 [2023-11-21 22:13:45,633 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:13:45,634 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:13:45,635 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:13:45,635 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:13:45,646 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:45" (1/1) ... [2023-11-21 22:13:45,647 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:45" (1/1) ... [2023-11-21 22:13:45,665 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:45" (1/1) ... [2023-11-21 22:13:45,672 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:45" (1/1) ... [2023-11-21 22:13:45,709 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:45" (1/1) ... [2023-11-21 22:13:45,727 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:45" (1/1) ... [2023-11-21 22:13:45,730 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:45" (1/1) ... [2023-11-21 22:13:45,740 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:45" (1/1) ... [2023-11-21 22:13:45,745 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:13:45,748 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:13:45,749 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:13:45,750 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:13:45,751 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:45" (1/1) ... [2023-11-21 22:13:45,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:13:45,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:13:45,785 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:13:45,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:13:45,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:13:45,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-21 22:13:45,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 22:13:45,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 22:13:45,833 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 22:13:45,833 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-21 22:13:45,834 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-21 22:13:45,834 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-21 22:13:45,834 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-21 22:13:45,834 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-21 22:13:45,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 22:13:45,834 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 22:13:45,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:13:45,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:13:45,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:13:45,839 WARN L212 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-21 22:13:46,019 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:13:46,021 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:13:47,078 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:13:47,099 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:13:47,100 INFO L308 CfgBuilder]: Removed 7 assume(true) statements. [2023-11-21 22:13:47,102 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:13:47 BoogieIcfgContainer [2023-11-21 22:13:47,102 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:13:47,105 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:13:47,105 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:13:47,108 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:13:47,109 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:13:45" (1/3) ... [2023-11-21 22:13:47,109 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9d85572 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:13:47, skipping insertion in model container [2023-11-21 22:13:47,110 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:45" (2/3) ... [2023-11-21 22:13:47,110 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9d85572 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:13:47, skipping insertion in model container [2023-11-21 22:13:47,110 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:13:47" (3/3) ... [2023-11-21 22:13:47,112 INFO L112 eAbstractionObserver]: Analyzing ICFG loop-tiling-eq.wvr.c [2023-11-21 22:13:47,121 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-21 22:13:47,133 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:13:47,133 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 57 error locations. [2023-11-21 22:13:47,134 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 22:13:47,265 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-21 22:13:47,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 531 places, 554 transitions, 1122 flow [2023-11-21 22:13:47,544 INFO L124 PetriNetUnfolderBase]: 30/552 cut-off events. [2023-11-21 22:13:47,581 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-21 22:13:47,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 561 conditions, 552 events. 30/552 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 854 event pairs, 0 based on Foata normal form. 0/465 useless extension candidates. Maximal degree in co-relation 350. Up to 2 conditions per place. [2023-11-21 22:13:47,594 INFO L82 GeneralOperation]: Start removeDead. Operand has 531 places, 554 transitions, 1122 flow [2023-11-21 22:13:47,619 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 506 places, 528 transitions, 1068 flow [2023-11-21 22:13:47,629 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:13:47,635 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;@47410310, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:13:47,636 INFO L358 AbstractCegarLoop]: Starting to check reachability of 72 error locations. [2023-11-21 22:13:47,640 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:13:47,641 INFO L124 PetriNetUnfolderBase]: 0/23 cut-off events. [2023-11-21 22:13:47,641 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:13:47,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:13:47,642 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] [2023-11-21 22:13:47,642 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-11-21 22:13:47,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:13:47,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1499027220, now seen corresponding path program 1 times [2023-11-21 22:13:47,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:13:47,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667374116] [2023-11-21 22:13:47,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:47,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:13:47,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:47,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:13:47,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:13:47,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667374116] [2023-11-21 22:13:47,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667374116] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:13:47,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:13:47,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:13:47,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146742405] [2023-11-21 22:13:47,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:13:47,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:13:47,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:13:47,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:13:47,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:13:48,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 515 out of 554 [2023-11-21 22:13:48,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 528 transitions, 1068 flow. Second operand has 3 states, 3 states have (on average 516.3333333333334) internal successors, (1549), 3 states have internal predecessors, (1549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:48,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:13:48,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 515 of 554 [2023-11-21 22:13:48,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:13:48,189 INFO L124 PetriNetUnfolderBase]: 16/568 cut-off events. [2023-11-21 22:13:48,190 INFO L125 PetriNetUnfolderBase]: For 17/18 co-relation queries the response was YES. [2023-11-21 22:13:48,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 604 conditions, 568 events. 16/568 cut-off events. For 17/18 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1121 event pairs, 2 based on Foata normal form. 22/502 useless extension candidates. Maximal degree in co-relation 344. Up to 22 conditions per place. [2023-11-21 22:13:48,196 INFO L140 encePairwiseOnDemand]: 533/554 looper letters, 15 selfloop transitions, 2 changer transitions 11/509 dead transitions. [2023-11-21 22:13:48,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 509 transitions, 1064 flow [2023-11-21 22:13:48,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:13:48,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:13:48,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1581 transitions. [2023-11-21 22:13:48,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9512635379061372 [2023-11-21 22:13:48,219 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1581 transitions. [2023-11-21 22:13:48,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1581 transitions. [2023-11-21 22:13:48,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:13:48,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1581 transitions. [2023-11-21 22:13:48,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 527.0) internal successors, (1581), 3 states have internal predecessors, (1581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:48,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 554.0) internal successors, (2216), 4 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:48,246 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 554.0) internal successors, (2216), 4 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:48,248 INFO L175 Difference]: Start difference. First operand has 506 places, 528 transitions, 1068 flow. Second operand 3 states and 1581 transitions. [2023-11-21 22:13:48,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 509 transitions, 1064 flow [2023-11-21 22:13:48,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 509 transitions, 1056 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-21 22:13:48,269 INFO L231 Difference]: Finished difference. Result has 503 places, 498 transitions, 1004 flow [2023-11-21 22:13:48,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=554, PETRI_DIFFERENCE_MINUEND_FLOW=1022, PETRI_DIFFERENCE_MINUEND_PLACES=501, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=507, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1004, PETRI_PLACES=503, PETRI_TRANSITIONS=498} [2023-11-21 22:13:48,276 INFO L281 CegarLoopForPetriNet]: 506 programPoint places, -3 predicate places. [2023-11-21 22:13:48,276 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 498 transitions, 1004 flow [2023-11-21 22:13:48,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 516.3333333333334) internal successors, (1549), 3 states have internal predecessors, (1549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:48,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:13:48,279 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] [2023-11-21 22:13:48,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:13:48,279 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-11-21 22:13:48,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:13:48,280 INFO L85 PathProgramCache]: Analyzing trace with hash 834311248, now seen corresponding path program 1 times [2023-11-21 22:13:48,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:13:48,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071885097] [2023-11-21 22:13:48,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:48,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:13:48,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:48,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:13:48,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:13:48,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071885097] [2023-11-21 22:13:48,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071885097] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:13:48,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:13:48,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:13:48,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670661915] [2023-11-21 22:13:48,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:13:48,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:13:48,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:13:48,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:13:48,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:13:48,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 505 out of 554 [2023-11-21 22:13:48,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 498 transitions, 1004 flow. Second operand has 3 states, 3 states have (on average 506.0) internal successors, (1518), 3 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:48,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:13:48,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 505 of 554 [2023-11-21 22:13:48,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:13:48,563 INFO L124 PetriNetUnfolderBase]: 18/549 cut-off events. [2023-11-21 22:13:48,564 INFO L125 PetriNetUnfolderBase]: For 8/9 co-relation queries the response was YES. [2023-11-21 22:13:48,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 587 conditions, 549 events. 18/549 cut-off events. For 8/9 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1138 event pairs, 4 based on Foata normal form. 0/482 useless extension candidates. Maximal degree in co-relation 555. Up to 30 conditions per place. [2023-11-21 22:13:48,568 INFO L140 encePairwiseOnDemand]: 545/554 looper letters, 20 selfloop transitions, 1 changer transitions 0/490 dead transitions. [2023-11-21 22:13:48,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 490 transitions, 1030 flow [2023-11-21 22:13:48,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:13:48,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:13:48,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1544 transitions. [2023-11-21 22:13:48,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9290012033694344 [2023-11-21 22:13:48,575 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1544 transitions. [2023-11-21 22:13:48,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1544 transitions. [2023-11-21 22:13:48,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:13:48,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1544 transitions. [2023-11-21 22:13:48,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 514.6666666666666) internal successors, (1544), 3 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:48,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 554.0) internal successors, (2216), 4 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:48,622 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 554.0) internal successors, (2216), 4 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:48,622 INFO L175 Difference]: Start difference. First operand has 503 places, 498 transitions, 1004 flow. Second operand 3 states and 1544 transitions. [2023-11-21 22:13:48,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 486 places, 490 transitions, 1030 flow [2023-11-21 22:13:48,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 490 transitions, 1026 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:13:48,638 INFO L231 Difference]: Finished difference. Result has 484 places, 490 transitions, 986 flow [2023-11-21 22:13:48,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=554, PETRI_DIFFERENCE_MINUEND_FLOW=984, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=489, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=986, PETRI_PLACES=484, PETRI_TRANSITIONS=490} [2023-11-21 22:13:48,640 INFO L281 CegarLoopForPetriNet]: 506 programPoint places, -22 predicate places. [2023-11-21 22:13:48,640 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 490 transitions, 986 flow [2023-11-21 22:13:48,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 506.0) internal successors, (1518), 3 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:48,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:13:48,642 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] [2023-11-21 22:13:48,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 22:13:48,643 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-11-21 22:13:48,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:13:48,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1998856167, now seen corresponding path program 1 times [2023-11-21 22:13:48,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:13:48,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227266558] [2023-11-21 22:13:48,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:48,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:13:48,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:48,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:13:48,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:13:48,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227266558] [2023-11-21 22:13:48,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227266558] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:13:48,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:13:48,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:13:48,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796109095] [2023-11-21 22:13:48,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:13:48,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:13:48,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:13:48,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:13:48,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:13:48,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 514 out of 554 [2023-11-21 22:13:48,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 490 transitions, 986 flow. Second operand has 3 states, 3 states have (on average 515.3333333333334) internal successors, (1546), 3 states have internal predecessors, (1546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:48,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:13:48,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 514 of 554 [2023-11-21 22:13:48,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:13:48,917 INFO L124 PetriNetUnfolderBase]: 14/544 cut-off events. [2023-11-21 22:13:48,917 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-21 22:13:48,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 571 conditions, 544 events. 14/544 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1023 event pairs, 1 based on Foata normal form. 0/478 useless extension candidates. Maximal degree in co-relation 539. Up to 20 conditions per place. [2023-11-21 22:13:48,921 INFO L140 encePairwiseOnDemand]: 551/554 looper letters, 16 selfloop transitions, 2 changer transitions 0/489 dead transitions. [2023-11-21 22:13:48,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 489 transitions, 1020 flow [2023-11-21 22:13:48,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:13:48,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:13:48,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1561 transitions. [2023-11-21 22:13:48,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9392298435619735 [2023-11-21 22:13:48,928 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1561 transitions. [2023-11-21 22:13:48,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1561 transitions. [2023-11-21 22:13:48,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:13:48,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1561 transitions. [2023-11-21 22:13:48,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 520.3333333333334) internal successors, (1561), 3 states have internal predecessors, (1561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:48,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 554.0) internal successors, (2216), 4 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:48,942 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 554.0) internal successors, (2216), 4 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:48,942 INFO L175 Difference]: Start difference. First operand has 484 places, 490 transitions, 986 flow. Second operand 3 states and 1561 transitions. [2023-11-21 22:13:48,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 489 transitions, 1020 flow [2023-11-21 22:13:48,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 489 transitions, 1019 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:13:48,958 INFO L231 Difference]: Finished difference. Result has 484 places, 489 transitions, 987 flow [2023-11-21 22:13:48,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=554, PETRI_DIFFERENCE_MINUEND_FLOW=983, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=987, PETRI_PLACES=484, PETRI_TRANSITIONS=489} [2023-11-21 22:13:48,960 INFO L281 CegarLoopForPetriNet]: 506 programPoint places, -22 predicate places. [2023-11-21 22:13:48,960 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 489 transitions, 987 flow [2023-11-21 22:13:48,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 515.3333333333334) internal successors, (1546), 3 states have internal predecessors, (1546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:48,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:13:48,962 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] [2023-11-21 22:13:48,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 22:13:48,963 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-11-21 22:13:48,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:13:48,964 INFO L85 PathProgramCache]: Analyzing trace with hash -82021650, now seen corresponding path program 1 times [2023-11-21 22:13:48,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:13:48,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123912971] [2023-11-21 22:13:48,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:48,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:13:48,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:49,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:13:49,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:13:49,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123912971] [2023-11-21 22:13:49,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123912971] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:13:49,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:13:49,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:13:49,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752755432] [2023-11-21 22:13:49,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:13:49,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:13:49,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:13:49,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:13:49,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:13:49,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 502 out of 554 [2023-11-21 22:13:49,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 489 transitions, 987 flow. Second operand has 3 states, 3 states have (on average 503.0) internal successors, (1509), 3 states have internal predecessors, (1509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:49,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:13:49,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 502 of 554 [2023-11-21 22:13:49,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:13:49,215 INFO L124 PetriNetUnfolderBase]: 15/535 cut-off events. [2023-11-21 22:13:49,215 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-21 22:13:49,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 571 conditions, 535 events. 15/535 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1023 event pairs, 2 based on Foata normal form. 0/478 useless extension candidates. Maximal degree in co-relation 540. Up to 27 conditions per place. [2023-11-21 22:13:49,220 INFO L140 encePairwiseOnDemand]: 544/554 looper letters, 22 selfloop transitions, 1 changer transitions 0/480 dead transitions. [2023-11-21 22:13:49,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 480 transitions, 1015 flow [2023-11-21 22:13:49,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:13:49,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:13:49,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1538 transitions. [2023-11-21 22:13:49,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9253910950661853 [2023-11-21 22:13:49,226 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1538 transitions. [2023-11-21 22:13:49,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1538 transitions. [2023-11-21 22:13:49,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:13:49,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1538 transitions. [2023-11-21 22:13:49,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 512.6666666666666) internal successors, (1538), 3 states have internal predecessors, (1538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:49,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 554.0) internal successors, (2216), 4 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:49,243 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 554.0) internal successors, (2216), 4 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:49,243 INFO L175 Difference]: Start difference. First operand has 484 places, 489 transitions, 987 flow. Second operand 3 states and 1538 transitions. [2023-11-21 22:13:49,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 480 transitions, 1015 flow [2023-11-21 22:13:49,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 480 transitions, 1011 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:13:49,262 INFO L231 Difference]: Finished difference. Result has 475 places, 480 transitions, 967 flow [2023-11-21 22:13:49,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=554, PETRI_DIFFERENCE_MINUEND_FLOW=965, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=967, PETRI_PLACES=475, PETRI_TRANSITIONS=480} [2023-11-21 22:13:49,265 INFO L281 CegarLoopForPetriNet]: 506 programPoint places, -31 predicate places. [2023-11-21 22:13:49,265 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 480 transitions, 967 flow [2023-11-21 22:13:49,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 503.0) internal successors, (1509), 3 states have internal predecessors, (1509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:49,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:13:49,287 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] [2023-11-21 22:13:49,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 22:13:49,287 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-11-21 22:13:49,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:13:49,289 INFO L85 PathProgramCache]: Analyzing trace with hash 747242976, now seen corresponding path program 1 times [2023-11-21 22:13:49,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:13:49,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115893113] [2023-11-21 22:13:49,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:49,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:13:49,322 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:13:49,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1270027637] [2023-11-21 22:13:49,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:49,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:13:49,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:13:49,325 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:13:49,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 22:13:49,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:49,441 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 22:13:49,447 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:13:49,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:13:49,467 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:13:49,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:13:49,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115893113] [2023-11-21 22:13:49,467 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:13:49,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270027637] [2023-11-21 22:13:49,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270027637] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:13:49,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:13:49,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:13:49,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613880336] [2023-11-21 22:13:49,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:13:49,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:13:49,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:13:49,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:13:49,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:13:49,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 520 out of 554 [2023-11-21 22:13:49,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 480 transitions, 967 flow. Second operand has 3 states, 3 states have (on average 521.3333333333334) internal successors, (1564), 3 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:49,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:13:49,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 520 of 554 [2023-11-21 22:13:49,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:13:49,597 INFO L124 PetriNetUnfolderBase]: 13/515 cut-off events. [2023-11-21 22:13:49,597 INFO L125 PetriNetUnfolderBase]: For 2/3 co-relation queries the response was YES. [2023-11-21 22:13:49,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 538 conditions, 515 events. 13/515 cut-off events. For 2/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 974 event pairs, 1 based on Foata normal form. 0/461 useless extension candidates. Maximal degree in co-relation 506. Up to 14 conditions per place. [2023-11-21 22:13:49,601 INFO L140 encePairwiseOnDemand]: 551/554 looper letters, 10 selfloop transitions, 2 changer transitions 0/479 dead transitions. [2023-11-21 22:13:49,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 479 transitions, 989 flow [2023-11-21 22:13:49,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:13:49,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:13:49,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1573 transitions. [2023-11-21 22:13:49,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9464500601684718 [2023-11-21 22:13:49,607 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1573 transitions. [2023-11-21 22:13:49,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1573 transitions. [2023-11-21 22:13:49,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:13:49,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1573 transitions. [2023-11-21 22:13:49,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 524.3333333333334) internal successors, (1573), 3 states have internal predecessors, (1573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:49,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 554.0) internal successors, (2216), 4 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:49,622 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 554.0) internal successors, (2216), 4 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:49,623 INFO L175 Difference]: Start difference. First operand has 475 places, 480 transitions, 967 flow. Second operand 3 states and 1573 transitions. [2023-11-21 22:13:49,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 479 transitions, 989 flow [2023-11-21 22:13:49,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 479 transitions, 988 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:13:49,636 INFO L231 Difference]: Finished difference. Result has 475 places, 479 transitions, 968 flow [2023-11-21 22:13:49,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=554, PETRI_DIFFERENCE_MINUEND_FLOW=964, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=968, PETRI_PLACES=475, PETRI_TRANSITIONS=479} [2023-11-21 22:13:49,638 INFO L281 CegarLoopForPetriNet]: 506 programPoint places, -31 predicate places. [2023-11-21 22:13:49,638 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 479 transitions, 968 flow [2023-11-21 22:13:49,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 521.3333333333334) internal successors, (1564), 3 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:49,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:13:49,640 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] [2023-11-21 22:13:49,667 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-21 22:13:49,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:13:49,862 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-11-21 22:13:49,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:13:49,863 INFO L85 PathProgramCache]: Analyzing trace with hash 300817931, now seen corresponding path program 1 times [2023-11-21 22:13:49,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:13:49,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507547470] [2023-11-21 22:13:49,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:49,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:13:49,897 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:13:49,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [995225683] [2023-11-21 22:13:49,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:49,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:13:49,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:13:49,901 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:13:49,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 22:13:50,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:50,014 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 22:13:50,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:13:50,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:13:50,054 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:13:50,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:13:50,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507547470] [2023-11-21 22:13:50,055 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:13:50,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995225683] [2023-11-21 22:13:50,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995225683] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:13:50,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:13:50,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:13:50,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748037181] [2023-11-21 22:13:50,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:13:50,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:13:50,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:13:50,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:13:50,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:13:50,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 520 out of 554 [2023-11-21 22:13:50,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 479 transitions, 968 flow. Second operand has 3 states, 3 states have (on average 521.0) internal successors, (1563), 3 states have internal predecessors, (1563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:50,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:13:50,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 520 of 554 [2023-11-21 22:13:50,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:13:50,191 INFO L124 PetriNetUnfolderBase]: 14/512 cut-off events. [2023-11-21 22:13:50,191 INFO L125 PetriNetUnfolderBase]: For 3/5 co-relation queries the response was YES. [2023-11-21 22:13:50,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 539 conditions, 512 events. 14/512 cut-off events. For 3/5 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 968 event pairs, 2 based on Foata normal form. 0/461 useless extension candidates. Maximal degree in co-relation 508. Up to 15 conditions per place. [2023-11-21 22:13:50,195 INFO L140 encePairwiseOnDemand]: 550/554 looper letters, 10 selfloop transitions, 1 changer transitions 0/476 dead transitions. [2023-11-21 22:13:50,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 476 transitions, 984 flow [2023-11-21 22:13:50,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:13:50,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:13:50,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1574 transitions. [2023-11-21 22:13:50,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9470517448856799 [2023-11-21 22:13:50,202 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1574 transitions. [2023-11-21 22:13:50,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1574 transitions. [2023-11-21 22:13:50,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:13:50,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1574 transitions. [2023-11-21 22:13:50,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 524.6666666666666) internal successors, (1574), 3 states have internal predecessors, (1574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:50,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 554.0) internal successors, (2216), 4 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:50,217 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 554.0) internal successors, (2216), 4 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:50,217 INFO L175 Difference]: Start difference. First operand has 475 places, 479 transitions, 968 flow. Second operand 3 states and 1574 transitions. [2023-11-21 22:13:50,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 476 transitions, 984 flow [2023-11-21 22:13:50,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 476 transitions, 980 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:13:50,259 INFO L231 Difference]: Finished difference. Result has 472 places, 476 transitions, 960 flow [2023-11-21 22:13:50,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=554, PETRI_DIFFERENCE_MINUEND_FLOW=958, PETRI_DIFFERENCE_MINUEND_PLACES=470, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=960, PETRI_PLACES=472, PETRI_TRANSITIONS=476} [2023-11-21 22:13:50,261 INFO L281 CegarLoopForPetriNet]: 506 programPoint places, -34 predicate places. [2023-11-21 22:13:50,262 INFO L495 AbstractCegarLoop]: Abstraction has has 472 places, 476 transitions, 960 flow [2023-11-21 22:13:50,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 521.0) internal successors, (1563), 3 states have internal predecessors, (1563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:50,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:13:50,264 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] [2023-11-21 22:13:50,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-21 22:13:50,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:13:50,490 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-11-21 22:13:50,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:13:50,491 INFO L85 PathProgramCache]: Analyzing trace with hash 541187617, now seen corresponding path program 1 times [2023-11-21 22:13:50,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:13:50,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925214873] [2023-11-21 22:13:50,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:50,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:13:50,524 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:13:50,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1072778760] [2023-11-21 22:13:50,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:50,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:13:50,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:13:50,526 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:13:50,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-21 22:13:50,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:50,653 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-21 22:13:50,658 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:13:50,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:13:50,833 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:13:50,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:13:50,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925214873] [2023-11-21 22:13:50,834 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:13:50,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072778760] [2023-11-21 22:13:50,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072778760] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:13:50,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:13:50,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-21 22:13:50,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184513481] [2023-11-21 22:13:50,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:13:50,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-21 22:13:50,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:13:50,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-21 22:13:50,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-21 22:13:51,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 493 out of 554 [2023-11-21 22:13:51,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 476 transitions, 960 flow. Second operand has 8 states, 8 states have (on average 494.625) internal successors, (3957), 8 states have internal predecessors, (3957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:51,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:13:51,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 493 of 554 [2023-11-21 22:13:51,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:13:51,676 INFO L124 PetriNetUnfolderBase]: 18/860 cut-off events. [2023-11-21 22:13:51,677 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-21 22:13:51,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 940 conditions, 860 events. 18/860 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2615 event pairs, 0 based on Foata normal form. 2/784 useless extension candidates. Maximal degree in co-relation 906. Up to 33 conditions per place. [2023-11-21 22:13:51,683 INFO L140 encePairwiseOnDemand]: 532/554 looper letters, 49 selfloop transitions, 20 changer transitions 0/505 dead transitions. [2023-11-21 22:13:51,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 505 transitions, 1160 flow [2023-11-21 22:13:51,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 22:13:51,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-21 22:13:51,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4508 transitions. [2023-11-21 22:13:51,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9041315683914962 [2023-11-21 22:13:51,699 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 4508 transitions. [2023-11-21 22:13:51,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 4508 transitions. [2023-11-21 22:13:51,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:13:51,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 4508 transitions. [2023-11-21 22:13:51,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 500.8888888888889) internal successors, (4508), 9 states have internal predecessors, (4508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:51,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 554.0) internal successors, (5540), 10 states have internal predecessors, (5540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:51,742 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 554.0) internal successors, (5540), 10 states have internal predecessors, (5540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:51,742 INFO L175 Difference]: Start difference. First operand has 472 places, 476 transitions, 960 flow. Second operand 9 states and 4508 transitions. [2023-11-21 22:13:51,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 505 transitions, 1160 flow [2023-11-21 22:13:51,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 505 transitions, 1159 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:13:51,757 INFO L231 Difference]: Finished difference. Result has 485 places, 490 transitions, 1094 flow [2023-11-21 22:13:51,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=554, PETRI_DIFFERENCE_MINUEND_FLOW=959, PETRI_DIFFERENCE_MINUEND_PLACES=471, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1094, PETRI_PLACES=485, PETRI_TRANSITIONS=490} [2023-11-21 22:13:51,759 INFO L281 CegarLoopForPetriNet]: 506 programPoint places, -21 predicate places. [2023-11-21 22:13:51,759 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 490 transitions, 1094 flow [2023-11-21 22:13:51,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 494.625) internal successors, (3957), 8 states have internal predecessors, (3957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:51,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:13:51,761 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] [2023-11-21 22:13:51,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-21 22:13:51,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:13:51,978 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-11-21 22:13:51,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:13:51,979 INFO L85 PathProgramCache]: Analyzing trace with hash 783968234, now seen corresponding path program 1 times [2023-11-21 22:13:51,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:13:51,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332115978] [2023-11-21 22:13:51,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:51,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:13:52,007 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:13:52,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1545691775] [2023-11-21 22:13:52,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:52,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:13:52,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:13:52,009 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:13:52,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-21 22:13:52,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:52,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 22:13:52,129 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:13:52,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:13:52,140 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:13:52,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:13:52,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332115978] [2023-11-21 22:13:52,140 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:13:52,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545691775] [2023-11-21 22:13:52,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545691775] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:13:52,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:13:52,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:13:52,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802035582] [2023-11-21 22:13:52,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:13:52,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:13:52,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:13:52,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:13:52,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:13:52,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 521 out of 554 [2023-11-21 22:13:52,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 490 transitions, 1094 flow. Second operand has 3 states, 3 states have (on average 522.3333333333334) internal successors, (1567), 3 states have internal predecessors, (1567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:52,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:13:52,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 521 of 554 [2023-11-21 22:13:52,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:13:52,344 INFO L124 PetriNetUnfolderBase]: 24/930 cut-off events. [2023-11-21 22:13:52,344 INFO L125 PetriNetUnfolderBase]: For 20/22 co-relation queries the response was YES. [2023-11-21 22:13:52,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1031 conditions, 930 events. 24/930 cut-off events. For 20/22 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3174 event pairs, 2 based on Foata normal form. 0/842 useless extension candidates. Maximal degree in co-relation 990. Up to 26 conditions per place. [2023-11-21 22:13:52,352 INFO L140 encePairwiseOnDemand]: 551/554 looper letters, 9 selfloop transitions, 2 changer transitions 0/489 dead transitions. [2023-11-21 22:13:52,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 489 transitions, 1114 flow [2023-11-21 22:13:52,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:13:52,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:13:52,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1575 transitions. [2023-11-21 22:13:52,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9476534296028881 [2023-11-21 22:13:52,358 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1575 transitions. [2023-11-21 22:13:52,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1575 transitions. [2023-11-21 22:13:52,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:13:52,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1575 transitions. [2023-11-21 22:13:52,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 525.0) internal successors, (1575), 3 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:52,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 554.0) internal successors, (2216), 4 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:52,369 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 554.0) internal successors, (2216), 4 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:52,369 INFO L175 Difference]: Start difference. First operand has 485 places, 490 transitions, 1094 flow. Second operand 3 states and 1575 transitions. [2023-11-21 22:13:52,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 486 places, 489 transitions, 1114 flow [2023-11-21 22:13:52,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 489 transitions, 1109 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:13:52,383 INFO L231 Difference]: Finished difference. Result has 484 places, 489 transitions, 1091 flow [2023-11-21 22:13:52,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=554, PETRI_DIFFERENCE_MINUEND_FLOW=1087, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1091, PETRI_PLACES=484, PETRI_TRANSITIONS=489} [2023-11-21 22:13:52,385 INFO L281 CegarLoopForPetriNet]: 506 programPoint places, -22 predicate places. [2023-11-21 22:13:52,385 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 489 transitions, 1091 flow [2023-11-21 22:13:52,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 522.3333333333334) internal successors, (1567), 3 states have internal predecessors, (1567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:52,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:13:52,387 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] [2023-11-21 22:13:52,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-21 22:13:52,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-21 22:13:52,608 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-11-21 22:13:52,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:13:52,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1636160625, now seen corresponding path program 1 times [2023-11-21 22:13:52,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:13:52,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982847070] [2023-11-21 22:13:52,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:52,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:13:52,627 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:13:52,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1553432129] [2023-11-21 22:13:52,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:52,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:13:52,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:13:52,629 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:13:52,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-21 22:13:52,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:52,746 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-21 22:13:52,751 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:13:52,790 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 15 treesize of output 11 [2023-11-21 22:13:52,808 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 28 treesize of output 27 [2023-11-21 22:13:52,842 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:13:52,842 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 40 treesize of output 42 [2023-11-21 22:13:52,892 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:13:52,893 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 52 treesize of output 57 [2023-11-21 22:13:52,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:13:52,926 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:13:52,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:13:52,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982847070] [2023-11-21 22:13:52,926 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:13:52,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553432129] [2023-11-21 22:13:52,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553432129] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:13:52,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:13:52,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:13:52,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852251979] [2023-11-21 22:13:52,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:13:52,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:13:52,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:13:52,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:13:52,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:13:53,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 444 out of 554 [2023-11-21 22:13:53,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 489 transitions, 1091 flow. Second operand has 6 states, 6 states have (on average 445.5) internal successors, (2673), 6 states have internal predecessors, (2673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:53,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:13:53,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 444 of 554 [2023-11-21 22:13:53,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:13:56,138 INFO L124 PetriNetUnfolderBase]: 2396/9234 cut-off events. [2023-11-21 22:13:56,139 INFO L125 PetriNetUnfolderBase]: For 86/86 co-relation queries the response was YES. [2023-11-21 22:13:56,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13014 conditions, 9234 events. 2396/9234 cut-off events. For 86/86 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 90925 event pairs, 2024 based on Foata normal form. 0/8128 useless extension candidates. Maximal degree in co-relation 12974. Up to 3673 conditions per place. [2023-11-21 22:13:56,255 INFO L140 encePairwiseOnDemand]: 536/554 looper letters, 78 selfloop transitions, 15 changer transitions 0/486 dead transitions. [2023-11-21 22:13:56,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 486 transitions, 1271 flow [2023-11-21 22:13:56,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:13:56,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:13:56,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2754 transitions. [2023-11-21 22:13:56,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8285198555956679 [2023-11-21 22:13:56,265 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2754 transitions. [2023-11-21 22:13:56,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2754 transitions. [2023-11-21 22:13:56,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:13:56,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2754 transitions. [2023-11-21 22:13:56,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 459.0) internal successors, (2754), 6 states have internal predecessors, (2754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:56,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 554.0) internal successors, (3878), 7 states have internal predecessors, (3878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:56,285 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 554.0) internal successors, (3878), 7 states have internal predecessors, (3878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:56,285 INFO L175 Difference]: Start difference. First operand has 484 places, 489 transitions, 1091 flow. Second operand 6 states and 2754 transitions. [2023-11-21 22:13:56,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 486 places, 486 transitions, 1271 flow [2023-11-21 22:13:56,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 486 transitions, 1267 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:13:56,300 INFO L231 Difference]: Finished difference. Result has 484 places, 486 transitions, 1111 flow [2023-11-21 22:13:56,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=554, PETRI_DIFFERENCE_MINUEND_FLOW=1081, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1111, PETRI_PLACES=484, PETRI_TRANSITIONS=486} [2023-11-21 22:13:56,303 INFO L281 CegarLoopForPetriNet]: 506 programPoint places, -22 predicate places. [2023-11-21 22:13:56,303 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 486 transitions, 1111 flow [2023-11-21 22:13:56,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 445.5) internal successors, (2673), 6 states have internal predecessors, (2673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:56,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:13:56,305 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] [2023-11-21 22:13:56,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-21 22:13:56,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:13:56,526 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-11-21 22:13:56,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:13:56,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1785525179, now seen corresponding path program 1 times [2023-11-21 22:13:56,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:13:56,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551641131] [2023-11-21 22:13:56,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:56,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:13:56,608 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:13:56,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1733517065] [2023-11-21 22:13:56,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:56,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:13:56,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:13:56,610 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:13:56,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-21 22:13:56,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:56,735 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 22:13:56,743 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:13:56,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:13:56,762 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:13:56,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:13:56,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551641131] [2023-11-21 22:13:56,763 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:13:56,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733517065] [2023-11-21 22:13:56,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733517065] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:13:56,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:13:56,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:13:56,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787541151] [2023-11-21 22:13:56,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:13:56,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:13:56,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:13:56,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:13:56,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:13:56,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 521 out of 554 [2023-11-21 22:13:56,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 486 transitions, 1111 flow. Second operand has 3 states, 3 states have (on average 522.3333333333334) internal successors, (1567), 3 states have internal predecessors, (1567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:56,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:13:56,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 521 of 554 [2023-11-21 22:13:56,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:13:56,969 INFO L124 PetriNetUnfolderBase]: 28/1004 cut-off events. [2023-11-21 22:13:56,970 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2023-11-21 22:13:56,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1127 conditions, 1004 events. 28/1004 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3849 event pairs, 6 based on Foata normal form. 0/910 useless extension candidates. Maximal degree in co-relation 1086. Up to 30 conditions per place. [2023-11-21 22:13:56,977 INFO L140 encePairwiseOnDemand]: 551/554 looper letters, 9 selfloop transitions, 2 changer transitions 0/485 dead transitions. [2023-11-21 22:13:56,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 485 transitions, 1131 flow [2023-11-21 22:13:56,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:13:56,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:13:56,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1575 transitions. [2023-11-21 22:13:56,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9476534296028881 [2023-11-21 22:13:56,983 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1575 transitions. [2023-11-21 22:13:56,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1575 transitions. [2023-11-21 22:13:56,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:13:56,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1575 transitions. [2023-11-21 22:13:56,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 525.0) internal successors, (1575), 3 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:57,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 554.0) internal successors, (2216), 4 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:57,002 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 554.0) internal successors, (2216), 4 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:57,002 INFO L175 Difference]: Start difference. First operand has 484 places, 486 transitions, 1111 flow. Second operand 3 states and 1575 transitions. [2023-11-21 22:13:57,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 485 transitions, 1131 flow [2023-11-21 22:13:57,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 480 places, 485 transitions, 1101 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-21 22:13:57,015 INFO L231 Difference]: Finished difference. Result has 480 places, 485 transitions, 1083 flow [2023-11-21 22:13:57,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=554, PETRI_DIFFERENCE_MINUEND_FLOW=1079, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1083, PETRI_PLACES=480, PETRI_TRANSITIONS=485} [2023-11-21 22:13:57,017 INFO L281 CegarLoopForPetriNet]: 506 programPoint places, -26 predicate places. [2023-11-21 22:13:57,017 INFO L495 AbstractCegarLoop]: Abstraction has has 480 places, 485 transitions, 1083 flow [2023-11-21 22:13:57,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 522.3333333333334) internal successors, (1567), 3 states have internal predecessors, (1567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:57,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:13:57,019 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] [2023-11-21 22:13:57,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-21 22:13:57,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:13:57,232 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-11-21 22:13:57,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:13:57,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1327389756, now seen corresponding path program 1 times [2023-11-21 22:13:57,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:13:57,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537999125] [2023-11-21 22:13:57,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:57,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:13:57,253 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:13:57,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1543317150] [2023-11-21 22:13:57,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:57,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:13:57,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:13:57,255 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:13:57,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-21 22:13:57,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:57,391 INFO L262 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 22:13:57,394 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:13:57,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:13:57,409 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:13:57,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:13:57,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537999125] [2023-11-21 22:13:57,410 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:13:57,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543317150] [2023-11-21 22:13:57,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543317150] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:13:57,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:13:57,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:13:57,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514181507] [2023-11-21 22:13:57,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:13:57,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:13:57,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:13:57,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:13:57,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:13:57,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 520 out of 554 [2023-11-21 22:13:57,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 480 places, 485 transitions, 1083 flow. Second operand has 3 states, 3 states have (on average 521.3333333333334) internal successors, (1564), 3 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:57,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:13:57,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 520 of 554 [2023-11-21 22:13:57,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:13:57,609 INFO L124 PetriNetUnfolderBase]: 20/870 cut-off events. [2023-11-21 22:13:57,609 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2023-11-21 22:13:57,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 969 conditions, 870 events. 20/870 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2769 event pairs, 2 based on Foata normal form. 0/798 useless extension candidates. Maximal degree in co-relation 928. Up to 24 conditions per place. [2023-11-21 22:13:57,616 INFO L140 encePairwiseOnDemand]: 551/554 looper letters, 10 selfloop transitions, 2 changer transitions 0/484 dead transitions. [2023-11-21 22:13:57,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 484 transitions, 1105 flow [2023-11-21 22:13:57,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:13:57,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:13:57,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1573 transitions. [2023-11-21 22:13:57,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9464500601684718 [2023-11-21 22:13:57,624 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1573 transitions. [2023-11-21 22:13:57,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1573 transitions. [2023-11-21 22:13:57,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:13:57,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1573 transitions. [2023-11-21 22:13:57,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 524.3333333333334) internal successors, (1573), 3 states have internal predecessors, (1573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:57,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 554.0) internal successors, (2216), 4 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:57,635 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 554.0) internal successors, (2216), 4 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:57,635 INFO L175 Difference]: Start difference. First operand has 480 places, 485 transitions, 1083 flow. Second operand 3 states and 1573 transitions. [2023-11-21 22:13:57,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 484 transitions, 1105 flow [2023-11-21 22:13:57,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 484 transitions, 1101 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:13:57,647 INFO L231 Difference]: Finished difference. Result has 479 places, 484 transitions, 1081 flow [2023-11-21 22:13:57,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=554, PETRI_DIFFERENCE_MINUEND_FLOW=1077, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=482, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1081, PETRI_PLACES=479, PETRI_TRANSITIONS=484} [2023-11-21 22:13:57,649 INFO L281 CegarLoopForPetriNet]: 506 programPoint places, -27 predicate places. [2023-11-21 22:13:57,649 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 484 transitions, 1081 flow [2023-11-21 22:13:57,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 521.3333333333334) internal successors, (1564), 3 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:57,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:13:57,650 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] [2023-11-21 22:13:57,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-21 22:13:57,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:13:57,861 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-11-21 22:13:57,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:13:57,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1080500561, now seen corresponding path program 1 times [2023-11-21 22:13:57,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:13:57,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134273355] [2023-11-21 22:13:57,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:57,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:13:57,886 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:13:57,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [850322713] [2023-11-21 22:13:57,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:57,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:13:57,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:13:57,893 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:13:57,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-21 22:13:58,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:58,031 INFO L262 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 22:13:58,035 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:13:58,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:13:58,048 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:13:58,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:13:58,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134273355] [2023-11-21 22:13:58,048 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:13:58,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850322713] [2023-11-21 22:13:58,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850322713] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:13:58,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:13:58,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:13:58,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779686348] [2023-11-21 22:13:58,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:13:58,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:13:58,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:13:58,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:13:58,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:13:58,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 520 out of 554 [2023-11-21 22:13:58,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 484 transitions, 1081 flow. Second operand has 3 states, 3 states have (on average 521.0) internal successors, (1563), 3 states have internal predecessors, (1563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:58,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:13:58,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 520 of 554 [2023-11-21 22:13:58,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:13:58,353 INFO L124 PetriNetUnfolderBase]: 42/1282 cut-off events. [2023-11-21 22:13:58,353 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2023-11-21 22:13:58,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1406 conditions, 1282 events. 42/1282 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 5350 event pairs, 0 based on Foata normal form. 0/1160 useless extension candidates. Maximal degree in co-relation 1366. Up to 38 conditions per place. [2023-11-21 22:13:58,371 INFO L140 encePairwiseOnDemand]: 548/554 looper letters, 15 selfloop transitions, 3 changer transitions 0/488 dead transitions. [2023-11-21 22:13:58,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 488 transitions, 1129 flow [2023-11-21 22:13:58,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:13:58,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:13:58,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1581 transitions. [2023-11-21 22:13:58,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9512635379061372 [2023-11-21 22:13:58,378 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1581 transitions. [2023-11-21 22:13:58,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1581 transitions. [2023-11-21 22:13:58,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:13:58,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1581 transitions. [2023-11-21 22:13:58,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 527.0) internal successors, (1581), 3 states have internal predecessors, (1581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:58,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 554.0) internal successors, (2216), 4 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:58,392 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 554.0) internal successors, (2216), 4 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:58,392 INFO L175 Difference]: Start difference. First operand has 479 places, 484 transitions, 1081 flow. Second operand 3 states and 1581 transitions. [2023-11-21 22:13:58,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 488 transitions, 1129 flow [2023-11-21 22:13:58,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 488 transitions, 1125 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:13:58,412 INFO L231 Difference]: Finished difference. Result has 477 places, 484 transitions, 1092 flow [2023-11-21 22:13:58,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=554, PETRI_DIFFERENCE_MINUEND_FLOW=1071, PETRI_DIFFERENCE_MINUEND_PLACES=474, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1092, PETRI_PLACES=477, PETRI_TRANSITIONS=484} [2023-11-21 22:13:58,415 INFO L281 CegarLoopForPetriNet]: 506 programPoint places, -29 predicate places. [2023-11-21 22:13:58,415 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 484 transitions, 1092 flow [2023-11-21 22:13:58,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 521.0) internal successors, (1563), 3 states have internal predecessors, (1563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:58,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:13:58,417 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, 1, 1, 1, 1, 1, 1] [2023-11-21 22:13:58,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-21 22:13:58,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-21 22:13:58,632 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-11-21 22:13:58,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:13:58,633 INFO L85 PathProgramCache]: Analyzing trace with hash 2011473520, now seen corresponding path program 1 times [2023-11-21 22:13:58,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:13:58,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990203210] [2023-11-21 22:13:58,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:58,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:13:58,662 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:13:58,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1354012416] [2023-11-21 22:13:58,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:58,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:13:58,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:13:58,664 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:13:58,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-21 22:13:58,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:58,815 INFO L262 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 22:13:58,820 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:13:58,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:13:58,835 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:13:58,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:13:58,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990203210] [2023-11-21 22:13:58,836 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:13:58,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354012416] [2023-11-21 22:13:58,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354012416] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:13:58,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:13:58,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:13:58,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124335158] [2023-11-21 22:13:58,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:13:58,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:13:58,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:13:58,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:13:58,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:13:58,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 523 out of 554 [2023-11-21 22:13:58,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 484 transitions, 1092 flow. Second operand has 3 states, 3 states have (on average 524.3333333333334) internal successors, (1573), 3 states have internal predecessors, (1573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:58,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:13:58,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 523 of 554 [2023-11-21 22:13:58,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:13:59,248 INFO L124 PetriNetUnfolderBase]: 60/1604 cut-off events. [2023-11-21 22:13:59,248 INFO L125 PetriNetUnfolderBase]: For 28/36 co-relation queries the response was YES. [2023-11-21 22:13:59,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1772 conditions, 1604 events. 60/1604 cut-off events. For 28/36 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 7549 event pairs, 0 based on Foata normal form. 4/1446 useless extension candidates. Maximal degree in co-relation 1732. Up to 52 conditions per place. [2023-11-21 22:13:59,260 INFO L140 encePairwiseOnDemand]: 550/554 looper letters, 12 selfloop transitions, 2 changer transitions 0/487 dead transitions. [2023-11-21 22:13:59,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 487 transitions, 1129 flow [2023-11-21 22:13:59,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:13:59,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:13:59,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1585 transitions. [2023-11-21 22:13:59,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.95367027677497 [2023-11-21 22:13:59,267 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1585 transitions. [2023-11-21 22:13:59,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1585 transitions. [2023-11-21 22:13:59,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:13:59,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1585 transitions. [2023-11-21 22:13:59,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 528.3333333333334) internal successors, (1585), 3 states have internal predecessors, (1585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:59,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 554.0) internal successors, (2216), 4 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:59,281 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 554.0) internal successors, (2216), 4 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:59,281 INFO L175 Difference]: Start difference. First operand has 477 places, 484 transitions, 1092 flow. Second operand 3 states and 1585 transitions. [2023-11-21 22:13:59,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 487 transitions, 1129 flow [2023-11-21 22:13:59,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 487 transitions, 1129 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-21 22:13:59,296 INFO L231 Difference]: Finished difference. Result has 478 places, 484 transitions, 1102 flow [2023-11-21 22:13:59,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=554, PETRI_DIFFERENCE_MINUEND_FLOW=1088, PETRI_DIFFERENCE_MINUEND_PLACES=475, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=480, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1102, PETRI_PLACES=478, PETRI_TRANSITIONS=484} [2023-11-21 22:13:59,298 INFO L281 CegarLoopForPetriNet]: 506 programPoint places, -28 predicate places. [2023-11-21 22:13:59,298 INFO L495 AbstractCegarLoop]: Abstraction has has 478 places, 484 transitions, 1102 flow [2023-11-21 22:13:59,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 524.3333333333334) internal successors, (1573), 3 states have internal predecessors, (1573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:59,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:13:59,300 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:13:59,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-21 22:13:59,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:13:59,521 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-11-21 22:13:59,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:13:59,521 INFO L85 PathProgramCache]: Analyzing trace with hash 290810514, now seen corresponding path program 1 times [2023-11-21 22:13:59,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:13:59,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856908727] [2023-11-21 22:13:59,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:59,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:13:59,545 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:13:59,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [898848080] [2023-11-21 22:13:59,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:59,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:13:59,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:13:59,547 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:13:59,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-21 22:13:59,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:59,708 INFO L262 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 22:13:59,711 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:13:59,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:13:59,722 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:13:59,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:13:59,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856908727] [2023-11-21 22:13:59,722 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:13:59,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898848080] [2023-11-21 22:13:59,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898848080] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:13:59,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:13:59,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:13:59,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109036689] [2023-11-21 22:13:59,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:13:59,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:13:59,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:13:59,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:13:59,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:13:59,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 523 out of 554 [2023-11-21 22:13:59,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 478 places, 484 transitions, 1102 flow. Second operand has 3 states, 3 states have (on average 524.3333333333334) internal successors, (1573), 3 states have internal predecessors, (1573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:59,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:13:59,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 523 of 554 [2023-11-21 22:13:59,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:14:00,231 INFO L124 PetriNetUnfolderBase]: 106/2382 cut-off events. [2023-11-21 22:14:00,231 INFO L125 PetriNetUnfolderBase]: For 40/44 co-relation queries the response was YES. [2023-11-21 22:14:00,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2643 conditions, 2382 events. 106/2382 cut-off events. For 40/44 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 14916 event pairs, 8 based on Foata normal form. 4/2132 useless extension candidates. Maximal degree in co-relation 2602. Up to 94 conditions per place. [2023-11-21 22:14:00,250 INFO L140 encePairwiseOnDemand]: 550/554 looper letters, 12 selfloop transitions, 2 changer transitions 0/487 dead transitions. [2023-11-21 22:14:00,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 487 transitions, 1139 flow [2023-11-21 22:14:00,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:14:00,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:14:00,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1585 transitions. [2023-11-21 22:14:00,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.95367027677497 [2023-11-21 22:14:00,256 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1585 transitions. [2023-11-21 22:14:00,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1585 transitions. [2023-11-21 22:14:00,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:14:00,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1585 transitions. [2023-11-21 22:14:00,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 528.3333333333334) internal successors, (1585), 3 states have internal predecessors, (1585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:14:00,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 554.0) internal successors, (2216), 4 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:14:00,267 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 554.0) internal successors, (2216), 4 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:14:00,268 INFO L175 Difference]: Start difference. First operand has 478 places, 484 transitions, 1102 flow. Second operand 3 states and 1585 transitions. [2023-11-21 22:14:00,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 487 transitions, 1139 flow [2023-11-21 22:14:00,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 487 transitions, 1139 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-21 22:14:00,279 INFO L231 Difference]: Finished difference. Result has 479 places, 484 transitions, 1112 flow [2023-11-21 22:14:00,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=554, PETRI_DIFFERENCE_MINUEND_FLOW=1098, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=480, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1112, PETRI_PLACES=479, PETRI_TRANSITIONS=484} [2023-11-21 22:14:00,281 INFO L281 CegarLoopForPetriNet]: 506 programPoint places, -27 predicate places. [2023-11-21 22:14:00,282 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 484 transitions, 1112 flow [2023-11-21 22:14:00,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 524.3333333333334) internal successors, (1573), 3 states have internal predecessors, (1573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:14:00,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:14:00,283 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:14:00,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-21 22:14:00,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:14:00,509 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-11-21 22:14:00,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:14:00,509 INFO L85 PathProgramCache]: Analyzing trace with hash -948663803, now seen corresponding path program 1 times [2023-11-21 22:14:00,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:14:00,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108335445] [2023-11-21 22:14:00,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:14:00,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:14:00,535 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:14:00,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [927677043] [2023-11-21 22:14:00,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:14:00,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:14:00,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:14:00,536 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:14:00,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-21 22:14:00,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:14:00,697 INFO L262 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-21 22:14:00,702 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:14:00,917 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 [2023-11-21 22:14:00,935 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 [2023-11-21 22:14:00,964 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:14:00,965 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 [2023-11-21 22:14:01,003 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:14:01,003 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 [2023-11-21 22:14:01,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:14:01,029 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:14:01,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:14:01,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108335445] [2023-11-21 22:14:01,030 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:14:01,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927677043] [2023-11-21 22:14:01,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927677043] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:14:01,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:14:01,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 22:14:01,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373533554] [2023-11-21 22:14:01,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:14:01,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 22:14:01,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:14:01,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 22:14:01,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:14:01,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 496 out of 554 [2023-11-21 22:14:01,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 484 transitions, 1112 flow. Second operand has 7 states, 7 states have (on average 497.2857142857143) internal successors, (3481), 7 states have internal predecessors, (3481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:14:01,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:14:01,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 496 of 554 [2023-11-21 22:14:01,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:14:03,709 INFO L124 PetriNetUnfolderBase]: 1490/8598 cut-off events. [2023-11-21 22:14:03,710 INFO L125 PetriNetUnfolderBase]: For 68/372 co-relation queries the response was YES. [2023-11-21 22:14:03,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11250 conditions, 8598 events. 1490/8598 cut-off events. For 68/372 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 85472 event pairs, 278 based on Foata normal form. 24/7662 useless extension candidates. Maximal degree in co-relation 11206. Up to 1729 conditions per place. [2023-11-21 22:14:03,787 INFO L140 encePairwiseOnDemand]: 539/554 looper letters, 36 selfloop transitions, 38 changer transitions 0/522 dead transitions. [2023-11-21 22:14:03,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 522 transitions, 1338 flow [2023-11-21 22:14:03,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 22:14:03,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-21 22:14:03,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3547 transitions. [2023-11-21 22:14:03,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9146467251160392 [2023-11-21 22:14:03,799 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3547 transitions. [2023-11-21 22:14:03,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3547 transitions. [2023-11-21 22:14:03,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:14:03,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3547 transitions. [2023-11-21 22:14:03,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 506.7142857142857) internal successors, (3547), 7 states have internal predecessors, (3547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:14:03,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 554.0) internal successors, (4432), 8 states have internal predecessors, (4432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:14:03,820 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 554.0) internal successors, (4432), 8 states have internal predecessors, (4432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:14:03,820 INFO L175 Difference]: Start difference. First operand has 479 places, 484 transitions, 1112 flow. Second operand 7 states and 3547 transitions. [2023-11-21 22:14:03,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 522 transitions, 1338 flow [2023-11-21 22:14:03,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 522 transitions, 1338 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-21 22:14:03,833 INFO L231 Difference]: Finished difference. Result has 490 places, 520 transitions, 1361 flow [2023-11-21 22:14:03,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=554, PETRI_DIFFERENCE_MINUEND_FLOW=1112, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1361, PETRI_PLACES=490, PETRI_TRANSITIONS=520} [2023-11-21 22:14:03,835 INFO L281 CegarLoopForPetriNet]: 506 programPoint places, -16 predicate places. [2023-11-21 22:14:03,835 INFO L495 AbstractCegarLoop]: Abstraction has has 490 places, 520 transitions, 1361 flow [2023-11-21 22:14:03,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 497.2857142857143) internal successors, (3481), 7 states have internal predecessors, (3481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:14:03,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:14:03,836 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:14:03,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-21 22:14:04,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-21 22:14:04,057 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-11-21 22:14:04,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:14:04,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1435648662, now seen corresponding path program 1 times [2023-11-21 22:14:04,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:14:04,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963319934] [2023-11-21 22:14:04,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:14:04,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:14:04,082 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:14:04,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2109716387] [2023-11-21 22:14:04,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:14:04,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:14:04,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:14:04,084 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:14:04,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-21 22:14:04,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:14:04,241 INFO L262 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-21 22:14:04,246 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:14:04,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:14:04,420 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:14:04,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:14:04,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963319934] [2023-11-21 22:14:04,421 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:14:04,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109716387] [2023-11-21 22:14:04,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109716387] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:14:04,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:14:04,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-21 22:14:04,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479088855] [2023-11-21 22:14:04,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:14:04,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 22:14:04,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:14:04,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 22:14:04,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:14:04,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 497 out of 554 [2023-11-21 22:14:04,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 520 transitions, 1361 flow. Second operand has 7 states, 7 states have (on average 500.0) internal successors, (3500), 7 states have internal predecessors, (3500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:14:04,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:14:04,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 497 of 554 [2023-11-21 22:14:04,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:14:06,445 INFO L124 PetriNetUnfolderBase]: 765/6682 cut-off events. [2023-11-21 22:14:06,445 INFO L125 PetriNetUnfolderBase]: For 434/516 co-relation queries the response was YES. [2023-11-21 22:14:06,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9245 conditions, 6682 events. 765/6682 cut-off events. For 434/516 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 59454 event pairs, 108 based on Foata normal form. 22/6139 useless extension candidates. Maximal degree in co-relation 9195. Up to 757 conditions per place. [2023-11-21 22:14:06,518 INFO L140 encePairwiseOnDemand]: 533/554 looper letters, 44 selfloop transitions, 41 changer transitions 0/555 dead transitions. [2023-11-21 22:14:06,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 555 transitions, 1626 flow [2023-11-21 22:14:06,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-21 22:14:06,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-21 22:14:06,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 5043 transitions. [2023-11-21 22:14:06,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9102888086642599 [2023-11-21 22:14:06,536 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 5043 transitions. [2023-11-21 22:14:06,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 5043 transitions. [2023-11-21 22:14:06,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:14:06,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 5043 transitions. [2023-11-21 22:14:06,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 504.3) internal successors, (5043), 10 states have internal predecessors, (5043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:14:06,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 554.0) internal successors, (6094), 11 states have internal predecessors, (6094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:14:06,569 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 554.0) internal successors, (6094), 11 states have internal predecessors, (6094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:14:06,570 INFO L175 Difference]: Start difference. First operand has 490 places, 520 transitions, 1361 flow. Second operand 10 states and 5043 transitions. [2023-11-21 22:14:06,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 555 transitions, 1626 flow [2023-11-21 22:14:06,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 498 places, 555 transitions, 1625 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:14:06,597 INFO L231 Difference]: Finished difference. Result has 502 places, 536 transitions, 1541 flow [2023-11-21 22:14:06,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=554, PETRI_DIFFERENCE_MINUEND_FLOW=1360, PETRI_DIFFERENCE_MINUEND_PLACES=489, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1541, PETRI_PLACES=502, PETRI_TRANSITIONS=536} [2023-11-21 22:14:06,599 INFO L281 CegarLoopForPetriNet]: 506 programPoint places, -4 predicate places. [2023-11-21 22:14:06,600 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 536 transitions, 1541 flow [2023-11-21 22:14:06,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 500.0) internal successors, (3500), 7 states have internal predecessors, (3500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:14:06,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:14:06,601 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:14:06,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-21 22:14:06,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-21 22:14:06,815 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-11-21 22:14:06,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:14:06,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1295783549, now seen corresponding path program 1 times [2023-11-21 22:14:06,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:14:06,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10313931] [2023-11-21 22:14:06,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:14:06,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:14:06,851 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:14:06,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [220991639] [2023-11-21 22:14:06,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:14:06,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:14:06,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:14:06,853 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:14:06,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-21 22:14:07,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:14:07,019 INFO L262 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 22:14:07,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:14:07,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:14:07,073 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:14:07,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:14:07,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10313931] [2023-11-21 22:14:07,073 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:14:07,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220991639] [2023-11-21 22:14:07,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [220991639] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:14:07,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:14:07,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:14:07,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825308350] [2023-11-21 22:14:07,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:14:07,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:14:07,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:14:07,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:14:07,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:14:07,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 517 out of 554 [2023-11-21 22:14:07,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 536 transitions, 1541 flow. Second operand has 5 states, 5 states have (on average 519.0) internal successors, (2595), 5 states have internal predecessors, (2595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:14:07,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:14:07,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 517 of 554 [2023-11-21 22:14:07,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:14:08,863 INFO L124 PetriNetUnfolderBase]: 742/7033 cut-off events. [2023-11-21 22:14:08,863 INFO L125 PetriNetUnfolderBase]: For 490/698 co-relation queries the response was YES. [2023-11-21 22:14:08,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9444 conditions, 7033 events. 742/7033 cut-off events. For 490/698 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 63082 event pairs, 145 based on Foata normal form. 8/6403 useless extension candidates. Maximal degree in co-relation 9388. Up to 679 conditions per place. [2023-11-21 22:14:08,925 INFO L140 encePairwiseOnDemand]: 545/554 looper letters, 19 selfloop transitions, 8 changer transitions 0/546 dead transitions. [2023-11-21 22:14:08,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 546 transitions, 1617 flow [2023-11-21 22:14:08,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:14:08,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:14:08,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3130 transitions. [2023-11-21 22:14:08,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9416365824308063 [2023-11-21 22:14:08,934 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3130 transitions. [2023-11-21 22:14:08,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3130 transitions. [2023-11-21 22:14:08,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:14:08,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3130 transitions. [2023-11-21 22:14:08,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 521.6666666666666) internal successors, (3130), 6 states have internal predecessors, (3130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:14:08,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 554.0) internal successors, (3878), 7 states have internal predecessors, (3878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:14:08,949 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 554.0) internal successors, (3878), 7 states have internal predecessors, (3878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:14:08,949 INFO L175 Difference]: Start difference. First operand has 502 places, 536 transitions, 1541 flow. Second operand 6 states and 3130 transitions. [2023-11-21 22:14:08,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 546 transitions, 1617 flow [2023-11-21 22:14:08,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 546 transitions, 1615 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-21 22:14:08,968 INFO L231 Difference]: Finished difference. Result has 511 places, 540 transitions, 1584 flow [2023-11-21 22:14:08,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=554, PETRI_DIFFERENCE_MINUEND_FLOW=1534, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=535, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=527, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1584, PETRI_PLACES=511, PETRI_TRANSITIONS=540} [2023-11-21 22:14:08,970 INFO L281 CegarLoopForPetriNet]: 506 programPoint places, 5 predicate places. [2023-11-21 22:14:08,970 INFO L495 AbstractCegarLoop]: Abstraction has has 511 places, 540 transitions, 1584 flow [2023-11-21 22:14:08,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 519.0) internal successors, (2595), 5 states have internal predecessors, (2595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:14:08,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:14:08,971 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:14:08,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-21 22:14:09,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-21 22:14:09,192 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-11-21 22:14:09,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:14:09,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1858762126, now seen corresponding path program 1 times [2023-11-21 22:14:09,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:14:09,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886882569] [2023-11-21 22:14:09,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:14:09,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:14:09,215 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:14:09,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1453343672] [2023-11-21 22:14:09,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:14:09,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:14:09,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:14:09,217 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:14:09,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-21 22:14:09,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:14:09,404 INFO L262 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-21 22:14:09,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:14:09,645 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 [2023-11-21 22:14:09,660 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 [2023-11-21 22:14:09,688 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:14:09,688 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 [2023-11-21 22:14:09,720 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:14:09,721 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 [2023-11-21 22:14:09,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:14:09,746 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:14:09,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:14:09,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886882569] [2023-11-21 22:14:09,747 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:14:09,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453343672] [2023-11-21 22:14:09,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453343672] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:14:09,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:14:09,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 22:14:09,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693923415] [2023-11-21 22:14:09,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:14:09,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 22:14:09,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:14:09,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 22:14:09,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:14:10,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 496 out of 554 [2023-11-21 22:14:10,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 511 places, 540 transitions, 1584 flow. Second operand has 7 states, 7 states have (on average 497.42857142857144) internal successors, (3482), 7 states have internal predecessors, (3482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:14:10,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:14:10,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 496 of 554 [2023-11-21 22:14:10,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:14:12,360 INFO L124 PetriNetUnfolderBase]: 1015/8419 cut-off events. [2023-11-21 22:14:12,360 INFO L125 PetriNetUnfolderBase]: For 1574/2881 co-relation queries the response was YES. [2023-11-21 22:14:12,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12496 conditions, 8419 events. 1015/8419 cut-off events. For 1574/2881 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 77021 event pairs, 128 based on Foata normal form. 89/7774 useless extension candidates. Maximal degree in co-relation 12434. Up to 1180 conditions per place. [2023-11-21 22:14:12,434 INFO L140 encePairwiseOnDemand]: 543/554 looper letters, 67 selfloop transitions, 38 changer transitions 0/577 dead transitions. [2023-11-21 22:14:12,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 517 places, 577 transitions, 1965 flow [2023-11-21 22:14:12,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 22:14:12,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-21 22:14:12,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3530 transitions. [2023-11-21 22:14:12,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9102630221763796 [2023-11-21 22:14:12,445 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3530 transitions. [2023-11-21 22:14:12,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3530 transitions. [2023-11-21 22:14:12,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:14:12,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3530 transitions. [2023-11-21 22:14:12,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 504.2857142857143) internal successors, (3530), 7 states have internal predecessors, (3530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:14:12,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 554.0) internal successors, (4432), 8 states have internal predecessors, (4432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:14:12,464 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 554.0) internal successors, (4432), 8 states have internal predecessors, (4432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:14:12,464 INFO L175 Difference]: Start difference. First operand has 511 places, 540 transitions, 1584 flow. Second operand 7 states and 3530 transitions. [2023-11-21 22:14:12,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 517 places, 577 transitions, 1965 flow [2023-11-21 22:14:12,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 577 transitions, 1961 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:14:12,486 INFO L231 Difference]: Finished difference. Result has 521 places, 576 transitions, 1925 flow [2023-11-21 22:14:12,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=554, PETRI_DIFFERENCE_MINUEND_FLOW=1580, PETRI_DIFFERENCE_MINUEND_PLACES=510, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=526, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1925, PETRI_PLACES=521, PETRI_TRANSITIONS=576} [2023-11-21 22:14:12,489 INFO L281 CegarLoopForPetriNet]: 506 programPoint places, 15 predicate places. [2023-11-21 22:14:12,489 INFO L495 AbstractCegarLoop]: Abstraction has has 521 places, 576 transitions, 1925 flow [2023-11-21 22:14:12,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 497.42857142857144) internal successors, (3482), 7 states have internal predecessors, (3482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:14:12,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:14:12,491 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:14:12,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-21 22:14:12,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-21 22:14:12,713 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-11-21 22:14:12,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:14:12,713 INFO L85 PathProgramCache]: Analyzing trace with hash -664766279, now seen corresponding path program 1 times [2023-11-21 22:14:12,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:14:12,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584692175] [2023-11-21 22:14:12,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:14:12,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:14:12,736 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:14:12,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [64434698] [2023-11-21 22:14:12,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:14:12,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:14:12,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:14:12,740 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:14:12,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-21 22:14:12,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:14:12,904 INFO L262 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 22:14:12,908 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:14:13,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:14:13,071 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:14:13,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:14:13,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584692175] [2023-11-21 22:14:13,071 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:14:13,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64434698] [2023-11-21 22:14:13,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64434698] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:14:13,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:14:13,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:14:13,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929286730] [2023-11-21 22:14:13,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:14:13,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:14:13,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:14:13,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:14:13,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:14:13,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 517 out of 554 [2023-11-21 22:14:13,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 521 places, 576 transitions, 1925 flow. Second operand has 5 states, 5 states have (on average 518.6) internal successors, (2593), 5 states have internal predecessors, (2593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:14:13,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:14:13,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 517 of 554 [2023-11-21 22:14:13,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:14:14,618 INFO L124 PetriNetUnfolderBase]: 836/6838 cut-off events. [2023-11-21 22:14:14,619 INFO L125 PetriNetUnfolderBase]: For 1306/1580 co-relation queries the response was YES. [2023-11-21 22:14:14,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10122 conditions, 6838 events. 836/6838 cut-off events. For 1306/1580 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 59132 event pairs, 101 based on Foata normal form. 13/6279 useless extension candidates. Maximal degree in co-relation 10054. Up to 807 conditions per place. [2023-11-21 22:14:14,669 INFO L140 encePairwiseOnDemand]: 545/554 looper letters, 19 selfloop transitions, 8 changer transitions 0/583 dead transitions. [2023-11-21 22:14:14,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 583 transitions, 2007 flow [2023-11-21 22:14:14,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:14:14,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:14:14,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3127 transitions. [2023-11-21 22:14:14,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.940734055354994 [2023-11-21 22:14:14,678 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3127 transitions. [2023-11-21 22:14:14,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3127 transitions. [2023-11-21 22:14:14,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:14:14,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3127 transitions. [2023-11-21 22:14:14,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 521.1666666666666) internal successors, (3127), 6 states have internal predecessors, (3127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:14:14,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 554.0) internal successors, (3878), 7 states have internal predecessors, (3878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:14:14,691 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 554.0) internal successors, (3878), 7 states have internal predecessors, (3878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:14:14,691 INFO L175 Difference]: Start difference. First operand has 521 places, 576 transitions, 1925 flow. Second operand 6 states and 3127 transitions. [2023-11-21 22:14:14,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 583 transitions, 2007 flow [2023-11-21 22:14:14,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 583 transitions, 2006 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:14:14,716 INFO L231 Difference]: Finished difference. Result has 527 places, 578 transitions, 1963 flow [2023-11-21 22:14:14,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=554, PETRI_DIFFERENCE_MINUEND_FLOW=1924, PETRI_DIFFERENCE_MINUEND_PLACES=520, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=576, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=568, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1963, PETRI_PLACES=527, PETRI_TRANSITIONS=578} [2023-11-21 22:14:14,717 INFO L281 CegarLoopForPetriNet]: 506 programPoint places, 21 predicate places. [2023-11-21 22:14:14,717 INFO L495 AbstractCegarLoop]: Abstraction has has 527 places, 578 transitions, 1963 flow [2023-11-21 22:14:14,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 518.6) internal successors, (2593), 5 states have internal predecessors, (2593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:14:14,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:14:14,719 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:14:14,744 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-21 22:14:14,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:14:14,939 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-11-21 22:14:14,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:14:14,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1108738825, now seen corresponding path program 1 times [2023-11-21 22:14:14,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:14:14,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408833652] [2023-11-21 22:14:14,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:14:14,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:14:14,969 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:14:14,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1762799439] [2023-11-21 22:14:14,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:14:14,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:14:14,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:14:14,971 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:14:14,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-21 22:14:15,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:14:15,143 INFO L262 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-21 22:14:15,149 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:14:15,161 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 15 treesize of output 11 [2023-11-21 22:14:15,170 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 28 treesize of output 27 [2023-11-21 22:14:15,192 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:14:15,193 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 40 treesize of output 42 [2023-11-21 22:14:15,234 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:14:15,234 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 52 treesize of output 57 [2023-11-21 22:14:15,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:14:15,259 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:14:15,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:14:15,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408833652] [2023-11-21 22:14:15,259 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:14:15,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762799439] [2023-11-21 22:14:15,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762799439] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:14:15,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:14:15,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:14:15,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207163732] [2023-11-21 22:14:15,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:14:15,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:14:15,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:14:15,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:14:15,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:14:15,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 463 out of 554 [2023-11-21 22:14:15,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 527 places, 578 transitions, 1963 flow. Second operand has 6 states, 6 states have (on average 464.6666666666667) internal successors, (2788), 6 states have internal predecessors, (2788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:14:15,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:14:15,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 463 of 554 [2023-11-21 22:14:15,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:14:18,607 INFO L124 PetriNetUnfolderBase]: 3072/12169 cut-off events. [2023-11-21 22:14:18,607 INFO L125 PetriNetUnfolderBase]: For 4837/4897 co-relation queries the response was YES. [2023-11-21 22:14:18,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23627 conditions, 12169 events. 3072/12169 cut-off events. For 4837/4897 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 112188 event pairs, 1493 based on Foata normal form. 0/11150 useless extension candidates. Maximal degree in co-relation 23556. Up to 5204 conditions per place. [2023-11-21 22:14:18,764 INFO L140 encePairwiseOnDemand]: 548/554 looper letters, 138 selfloop transitions, 5 changer transitions 0/577 dead transitions. [2023-11-21 22:14:18,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 577 transitions, 2247 flow [2023-11-21 22:14:18,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:14:18,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:14:18,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2848 transitions. [2023-11-21 22:14:18,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8567990373044525 [2023-11-21 22:14:18,773 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2848 transitions. [2023-11-21 22:14:18,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2848 transitions. [2023-11-21 22:14:18,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:14:18,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2848 transitions. [2023-11-21 22:14:18,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 474.6666666666667) internal successors, (2848), 6 states have internal predecessors, (2848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:14:18,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 554.0) internal successors, (3878), 7 states have internal predecessors, (3878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:14:18,785 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 554.0) internal successors, (3878), 7 states have internal predecessors, (3878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:14:18,786 INFO L175 Difference]: Start difference. First operand has 527 places, 578 transitions, 1963 flow. Second operand 6 states and 2848 transitions. [2023-11-21 22:14:18,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 577 transitions, 2247 flow [2023-11-21 22:14:18,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 577 transitions, 2238 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-21 22:14:18,826 INFO L231 Difference]: Finished difference. Result has 528 places, 577 transitions, 1962 flow [2023-11-21 22:14:18,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=554, PETRI_DIFFERENCE_MINUEND_FLOW=1952, PETRI_DIFFERENCE_MINUEND_PLACES=523, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=577, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=572, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1962, PETRI_PLACES=528, PETRI_TRANSITIONS=577} [2023-11-21 22:14:18,827 INFO L281 CegarLoopForPetriNet]: 506 programPoint places, 22 predicate places. [2023-11-21 22:14:18,828 INFO L495 AbstractCegarLoop]: Abstraction has has 528 places, 577 transitions, 1962 flow [2023-11-21 22:14:18,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 464.6666666666667) internal successors, (2788), 6 states have internal predecessors, (2788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:14:18,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:14:18,829 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:14:18,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-21 22:14:19,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:14:19,045 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-11-21 22:14:19,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:14:19,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1979457781, now seen corresponding path program 1 times [2023-11-21 22:14:19,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:14:19,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486361467] [2023-11-21 22:14:19,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:14:19,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:14:19,067 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:14:19,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1334174128] [2023-11-21 22:14:19,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:14:19,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:14:19,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:14:19,069 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:14:19,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-21 22:14:19,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:14:19,258 INFO L262 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 22:14:19,262 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:14:19,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:14:19,274 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:14:19,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:14:19,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486361467] [2023-11-21 22:14:19,275 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:14:19,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334174128] [2023-11-21 22:14:19,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334174128] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:14:19,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:14:19,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:14:19,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832648277] [2023-11-21 22:14:19,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:14:19,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:14:19,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:14:19,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:14:19,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:14:19,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 519 out of 554 [2023-11-21 22:14:19,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 528 places, 577 transitions, 1962 flow. Second operand has 3 states, 3 states have (on average 521.6666666666666) internal successors, (1565), 3 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:14:19,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:14:19,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 519 of 554 [2023-11-21 22:14:19,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:14:20,722 INFO L124 PetriNetUnfolderBase]: 836/6818 cut-off events. [2023-11-21 22:14:20,722 INFO L125 PetriNetUnfolderBase]: For 1297/1571 co-relation queries the response was YES. [2023-11-21 22:14:20,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10233 conditions, 6818 events. 836/6818 cut-off events. For 1297/1571 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 58926 event pairs, 101 based on Foata normal form. 12/6278 useless extension candidates. Maximal degree in co-relation 10163. Up to 807 conditions per place. [2023-11-21 22:14:20,780 INFO L140 encePairwiseOnDemand]: 551/554 looper letters, 11 selfloop transitions, 2 changer transitions 0/576 dead transitions. [2023-11-21 22:14:20,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 576 transitions, 1986 flow [2023-11-21 22:14:20,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:14:20,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:14:20,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1571 transitions. [2023-11-21 22:14:20,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9452466907340553 [2023-11-21 22:14:20,786 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1571 transitions. [2023-11-21 22:14:20,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1571 transitions. [2023-11-21 22:14:20,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:14:20,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1571 transitions. [2023-11-21 22:14:20,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 523.6666666666666) internal successors, (1571), 3 states have internal predecessors, (1571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:14:20,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 554.0) internal successors, (2216), 4 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:14:20,792 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 554.0) internal successors, (2216), 4 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:14:20,792 INFO L175 Difference]: Start difference. First operand has 528 places, 577 transitions, 1962 flow. Second operand 3 states and 1571 transitions. [2023-11-21 22:14:20,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 576 transitions, 1986 flow [2023-11-21 22:14:20,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 524 places, 576 transitions, 1976 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-21 22:14:20,819 INFO L231 Difference]: Finished difference. Result has 524 places, 576 transitions, 1954 flow [2023-11-21 22:14:20,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=554, PETRI_DIFFERENCE_MINUEND_FLOW=1950, PETRI_DIFFERENCE_MINUEND_PLACES=522, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=576, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=574, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1954, PETRI_PLACES=524, PETRI_TRANSITIONS=576} [2023-11-21 22:14:20,820 INFO L281 CegarLoopForPetriNet]: 506 programPoint places, 18 predicate places. [2023-11-21 22:14:20,821 INFO L495 AbstractCegarLoop]: Abstraction has has 524 places, 576 transitions, 1954 flow [2023-11-21 22:14:20,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 521.6666666666666) internal successors, (1565), 3 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:14:20,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:14:20,822 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:14:20,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-21 22:14:21,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-21 22:14:21,036 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-11-21 22:14:21,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:14:21,037 INFO L85 PathProgramCache]: Analyzing trace with hash -2132536157, now seen corresponding path program 1 times [2023-11-21 22:14:21,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:14:21,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343512044] [2023-11-21 22:14:21,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:14:21,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:14:21,068 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:14:21,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [502396230] [2023-11-21 22:14:21,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:14:21,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:14:21,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:14:21,070 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:14:21,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-21 22:14:21,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:14:21,261 INFO L262 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-21 22:14:21,267 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:14:21,283 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 15 treesize of output 11 [2023-11-21 22:14:21,292 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 28 treesize of output 27 [2023-11-21 22:14:21,313 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:14:21,313 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 40 treesize of output 42 [2023-11-21 22:14:21,343 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:14:21,344 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 52 treesize of output 57 [2023-11-21 22:14:21,367 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 22:14:21,367 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:14:21,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:14:21,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343512044] [2023-11-21 22:14:21,368 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:14:21,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502396230] [2023-11-21 22:14:21,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502396230] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:14:21,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:14:21,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:14:21,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019331226] [2023-11-21 22:14:21,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:14:21,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:14:21,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:14:21,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:14:21,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:14:21,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 495 out of 554 [2023-11-21 22:14:21,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 524 places, 576 transitions, 1954 flow. Second operand has 6 states, 6 states have (on average 497.8333333333333) internal successors, (2987), 6 states have internal predecessors, (2987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:14:21,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:14:21,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 495 of 554 [2023-11-21 22:14:21,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:14:24,403 INFO L124 PetriNetUnfolderBase]: 1897/11859 cut-off events. [2023-11-21 22:14:24,404 INFO L125 PetriNetUnfolderBase]: For 5669/8187 co-relation queries the response was YES. [2023-11-21 22:14:24,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20339 conditions, 11859 events. 1897/11859 cut-off events. For 5669/8187 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 121264 event pairs, 279 based on Foata normal form. 32/10899 useless extension candidates. Maximal degree in co-relation 20269. Up to 2122 conditions per place. [2023-11-21 22:14:24,545 INFO L140 encePairwiseOnDemand]: 543/554 looper letters, 108 selfloop transitions, 90 changer transitions 0/669 dead transitions. [2023-11-21 22:14:24,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 669 transitions, 2910 flow [2023-11-21 22:14:24,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:14:24,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:14:24,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3035 transitions. [2023-11-21 22:14:24,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9130565583634176 [2023-11-21 22:14:24,557 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3035 transitions. [2023-11-21 22:14:24,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3035 transitions. [2023-11-21 22:14:24,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:14:24,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3035 transitions. [2023-11-21 22:14:24,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 505.8333333333333) internal successors, (3035), 6 states have internal predecessors, (3035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:14:24,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 554.0) internal successors, (3878), 7 states have internal predecessors, (3878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:14:24,568 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 554.0) internal successors, (3878), 7 states have internal predecessors, (3878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:14:24,569 INFO L175 Difference]: Start difference. First operand has 524 places, 576 transitions, 1954 flow. Second operand 6 states and 3035 transitions. [2023-11-21 22:14:24,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 669 transitions, 2910 flow [2023-11-21 22:14:24,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 669 transitions, 2906 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:14:24,610 INFO L231 Difference]: Finished difference. Result has 532 places, 665 transitions, 2918 flow [2023-11-21 22:14:24,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=554, PETRI_DIFFERENCE_MINUEND_FLOW=1950, PETRI_DIFFERENCE_MINUEND_PLACES=522, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=576, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=546, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2918, PETRI_PLACES=532, PETRI_TRANSITIONS=665} [2023-11-21 22:14:24,611 INFO L281 CegarLoopForPetriNet]: 506 programPoint places, 26 predicate places. [2023-11-21 22:14:24,612 INFO L495 AbstractCegarLoop]: Abstraction has has 532 places, 665 transitions, 2918 flow [2023-11-21 22:14:24,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 497.8333333333333) internal successors, (2987), 6 states have internal predecessors, (2987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:14:24,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:14:24,613 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:14:24,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-21 22:14:24,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-21 22:14:24,828 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-11-21 22:14:24,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:14:24,829 INFO L85 PathProgramCache]: Analyzing trace with hash -299077960, now seen corresponding path program 1 times [2023-11-21 22:14:24,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:14:24,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521507211] [2023-11-21 22:14:24,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:14:24,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:14:24,858 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:14:24,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1851806428] [2023-11-21 22:14:24,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:14:24,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:14:24,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:14:24,860 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:14:24,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-21 22:14:25,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:14:25,060 INFO L262 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 22:14:25,064 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:14:25,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:14:25,076 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:14:25,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:14:25,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521507211] [2023-11-21 22:14:25,077 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:14:25,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851806428] [2023-11-21 22:14:25,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851806428] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:14:25,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:14:25,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:14:25,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023143266] [2023-11-21 22:14:25,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:14:25,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:14:25,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:14:25,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:14:25,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:14:25,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 519 out of 554 [2023-11-21 22:14:25,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 532 places, 665 transitions, 2918 flow. Second operand has 3 states, 3 states have (on average 521.6666666666666) internal successors, (1565), 3 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:14:25,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:14:25,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 519 of 554 [2023-11-21 22:14:25,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:14:26,902 INFO L124 PetriNetUnfolderBase]: 1388/8844 cut-off events. [2023-11-21 22:14:26,902 INFO L125 PetriNetUnfolderBase]: For 4225/5156 co-relation queries the response was YES. [2023-11-21 22:14:26,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15338 conditions, 8844 events. 1388/8844 cut-off events. For 4225/5156 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 82670 event pairs, 101 based on Foata normal form. 24/8224 useless extension candidates. Maximal degree in co-relation 15264. Up to 1283 conditions per place. [2023-11-21 22:14:27,005 INFO L140 encePairwiseOnDemand]: 551/554 looper letters, 11 selfloop transitions, 2 changer transitions 0/664 dead transitions. [2023-11-21 22:14:27,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 533 places, 664 transitions, 2942 flow [2023-11-21 22:14:27,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:14:27,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:14:27,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1571 transitions. [2023-11-21 22:14:27,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9452466907340553 [2023-11-21 22:14:27,007 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1571 transitions. [2023-11-21 22:14:27,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1571 transitions. [2023-11-21 22:14:27,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:14:27,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1571 transitions. [2023-11-21 22:14:27,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 523.6666666666666) internal successors, (1571), 3 states have internal predecessors, (1571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:14:27,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 554.0) internal successors, (2216), 4 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:14:27,011 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 554.0) internal successors, (2216), 4 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:14:27,011 INFO L175 Difference]: Start difference. First operand has 532 places, 665 transitions, 2918 flow. Second operand 3 states and 1571 transitions. [2023-11-21 22:14:27,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 533 places, 664 transitions, 2942 flow [2023-11-21 22:14:27,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 533 places, 664 transitions, 2878 flow, removed 32 selfloop flow, removed 0 redundant places. [2023-11-21 22:14:27,058 INFO L231 Difference]: Finished difference. Result has 533 places, 664 transitions, 2856 flow [2023-11-21 22:14:27,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=554, PETRI_DIFFERENCE_MINUEND_FLOW=2852, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=664, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=662, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2856, PETRI_PLACES=533, PETRI_TRANSITIONS=664} [2023-11-21 22:14:27,060 INFO L281 CegarLoopForPetriNet]: 506 programPoint places, 27 predicate places. [2023-11-21 22:14:27,060 INFO L495 AbstractCegarLoop]: Abstraction has has 533 places, 664 transitions, 2856 flow [2023-11-21 22:14:27,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 521.6666666666666) internal successors, (1565), 3 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:14:27,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:14:27,061 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:14:27,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-21 22:14:27,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-21 22:14:27,279 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err4ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-11-21 22:14:27,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:14:27,279 INFO L85 PathProgramCache]: Analyzing trace with hash -573857972, now seen corresponding path program 1 times [2023-11-21 22:14:27,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:14:27,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609470756] [2023-11-21 22:14:27,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:14:27,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:14:27,302 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:14:27,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [786434001] [2023-11-21 22:14:27,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:14:27,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:14:27,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:14:27,304 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:14:27,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-21 22:14:27,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:14:27,526 INFO L262 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-21 22:14:27,530 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:14:28,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 22:14:28,135 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:14:28,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:14:28,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609470756] [2023-11-21 22:14:28,136 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:14:28,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786434001] [2023-11-21 22:14:28,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786434001] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:14:28,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:14:28,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-21 22:14:28,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011959803] [2023-11-21 22:14:28,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:14:28,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-21 22:14:28,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:14:28,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-21 22:14:28,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-21 22:14:28,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 446 out of 554 [2023-11-21 22:14:28,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 664 transitions, 2856 flow. Second operand has 8 states, 8 states have (on average 453.375) internal successors, (3627), 8 states have internal predecessors, (3627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:14:28,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:14:28,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 446 of 554 [2023-11-21 22:14:28,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:14:30,502 INFO L124 PetriNetUnfolderBase]: 1289/7485 cut-off events. [2023-11-21 22:14:30,502 INFO L125 PetriNetUnfolderBase]: For 3442/3607 co-relation queries the response was YES. [2023-11-21 22:14:30,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13556 conditions, 7485 events. 1289/7485 cut-off events. For 3442/3607 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 66852 event pairs, 96 based on Foata normal form. 22/7048 useless extension candidates. Maximal degree in co-relation 13480. Up to 1193 conditions per place. [2023-11-21 22:14:30,599 INFO L140 encePairwiseOnDemand]: 540/554 looper letters, 131 selfloop transitions, 13 changer transitions 0/721 dead transitions. [2023-11-21 22:14:30,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 543 places, 721 transitions, 3256 flow [2023-11-21 22:14:30,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-21 22:14:30,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-21 22:14:30,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 5051 transitions. [2023-11-21 22:14:30,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8288480472595996 [2023-11-21 22:14:30,605 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 5051 transitions. [2023-11-21 22:14:30,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 5051 transitions. [2023-11-21 22:14:30,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:14:30,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 5051 transitions. [2023-11-21 22:14:30,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 459.1818181818182) internal successors, (5051), 11 states have internal predecessors, (5051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:14:30,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 554.0) internal successors, (6648), 12 states have internal predecessors, (6648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:14:30,622 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 554.0) internal successors, (6648), 12 states have internal predecessors, (6648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:14:30,622 INFO L175 Difference]: Start difference. First operand has 533 places, 664 transitions, 2856 flow. Second operand 11 states and 5051 transitions. [2023-11-21 22:14:30,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 543 places, 721 transitions, 3256 flow [2023-11-21 22:14:30,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 540 places, 721 transitions, 3250 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-21 22:14:30,662 INFO L231 Difference]: Finished difference. Result has 541 places, 663 transitions, 2872 flow [2023-11-21 22:14:30,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=554, PETRI_DIFFERENCE_MINUEND_FLOW=2842, PETRI_DIFFERENCE_MINUEND_PLACES=530, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=663, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=650, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2872, PETRI_PLACES=541, PETRI_TRANSITIONS=663} [2023-11-21 22:14:30,664 INFO L281 CegarLoopForPetriNet]: 506 programPoint places, 35 predicate places. [2023-11-21 22:14:30,664 INFO L495 AbstractCegarLoop]: Abstraction has has 541 places, 663 transitions, 2872 flow [2023-11-21 22:14:30,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 453.375) internal successors, (3627), 8 states have internal predecessors, (3627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:14:30,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:14:30,666 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:14:30,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-21 22:14:30,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-21 22:14:30,887 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-11-21 22:14:30,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:14:30,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1352853274, now seen corresponding path program 1 times [2023-11-21 22:14:30,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:14:30,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64687803] [2023-11-21 22:14:30,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:14:30,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:14:30,908 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:14:30,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1559040376] [2023-11-21 22:14:30,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:14:30,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:14:30,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:14:30,910 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:14:30,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-21 22:14:31,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:14:31,117 INFO L262 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 22:14:31,121 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:14:31,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:14:31,136 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:14:31,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:14:31,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64687803] [2023-11-21 22:14:31,136 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:14:31,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559040376] [2023-11-21 22:14:31,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559040376] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:14:31,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:14:31,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:14:31,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146691934] [2023-11-21 22:14:31,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:14:31,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:14:31,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:14:31,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:14:31,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:14:31,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 517 out of 554 [2023-11-21 22:14:31,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 541 places, 663 transitions, 2872 flow. Second operand has 3 states, 3 states have (on average 519.3333333333334) internal successors, (1558), 3 states have internal predecessors, (1558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:14:31,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:14:31,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 517 of 554 [2023-11-21 22:14:31,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:14:32,811 INFO L124 PetriNetUnfolderBase]: 1289/7443 cut-off events. [2023-11-21 22:14:32,811 INFO L125 PetriNetUnfolderBase]: For 3436/3601 co-relation queries the response was YES. [2023-11-21 22:14:32,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13361 conditions, 7443 events. 1289/7443 cut-off events. For 3436/3601 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 66334 event pairs, 96 based on Foata normal form. 20/7046 useless extension candidates. Maximal degree in co-relation 13285. Up to 1193 conditions per place. [2023-11-21 22:14:32,893 INFO L140 encePairwiseOnDemand]: 549/554 looper letters, 12 selfloop transitions, 1 changer transitions 0/659 dead transitions. [2023-11-21 22:14:32,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 539 places, 659 transitions, 2890 flow [2023-11-21 22:14:32,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:14:32,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:14:32,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1568 transitions. [2023-11-21 22:14:32,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9434416365824309 [2023-11-21 22:14:32,896 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1568 transitions. [2023-11-21 22:14:32,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1568 transitions. [2023-11-21 22:14:32,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:14:32,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1568 transitions. [2023-11-21 22:14:32,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 522.6666666666666) internal successors, (1568), 3 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:14:32,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 554.0) internal successors, (2216), 4 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:14:32,902 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 554.0) internal successors, (2216), 4 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:14:32,903 INFO L175 Difference]: Start difference. First operand has 541 places, 663 transitions, 2872 flow. Second operand 3 states and 1568 transitions. [2023-11-21 22:14:32,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 539 places, 659 transitions, 2890 flow [2023-11-21 22:14:32,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 530 places, 659 transitions, 2862 flow, removed 1 selfloop flow, removed 9 redundant places. [2023-11-21 22:14:32,938 INFO L231 Difference]: Finished difference. Result has 530 places, 659 transitions, 2838 flow [2023-11-21 22:14:32,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=554, PETRI_DIFFERENCE_MINUEND_FLOW=2836, PETRI_DIFFERENCE_MINUEND_PLACES=528, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=659, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=658, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2838, PETRI_PLACES=530, PETRI_TRANSITIONS=659} [2023-11-21 22:14:32,940 INFO L281 CegarLoopForPetriNet]: 506 programPoint places, 24 predicate places. [2023-11-21 22:14:32,940 INFO L495 AbstractCegarLoop]: Abstraction has has 530 places, 659 transitions, 2838 flow [2023-11-21 22:14:32,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 519.3333333333334) internal successors, (1558), 3 states have internal predecessors, (1558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:14:32,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:14:32,941 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:14:32,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-21 22:14:33,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-21 22:14:33,163 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-11-21 22:14:33,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:14:33,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1202909217, now seen corresponding path program 1 times [2023-11-21 22:14:33,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:14:33,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100800404] [2023-11-21 22:14:33,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:14:33,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:14:33,208 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:14:33,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1540310668] [2023-11-21 22:14:33,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:14:33,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:14:33,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:14:33,221 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:14:33,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-21 22:14:33,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:14:33,440 INFO L262 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 22:14:33,444 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:14:33,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:14:33,461 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:14:33,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:14:33,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100800404] [2023-11-21 22:14:33,462 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:14:33,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540310668] [2023-11-21 22:14:33,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540310668] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:14:33,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:14:33,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:14:33,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193477717] [2023-11-21 22:14:33,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:14:33,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:14:33,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:14:33,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:14:33,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:14:33,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 518 out of 554 [2023-11-21 22:14:33,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 530 places, 659 transitions, 2838 flow. Second operand has 4 states, 4 states have (on average 520.25) internal successors, (2081), 4 states have internal predecessors, (2081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:14:33,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:14:33,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 518 of 554 [2023-11-21 22:14:33,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:14:35,351 INFO L124 PetriNetUnfolderBase]: 1313/7863 cut-off events. [2023-11-21 22:14:35,352 INFO L125 PetriNetUnfolderBase]: For 3413/3578 co-relation queries the response was YES. [2023-11-21 22:14:35,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13863 conditions, 7863 events. 1313/7863 cut-off events. For 3413/3578 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 70810 event pairs, 96 based on Foata normal form. 20/7418 useless extension candidates. Maximal degree in co-relation 13788. Up to 1193 conditions per place. [2023-11-21 22:14:35,428 INFO L140 encePairwiseOnDemand]: 548/554 looper letters, 15 selfloop transitions, 5 changer transitions 0/664 dead transitions. [2023-11-21 22:14:35,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 534 places, 664 transitions, 2888 flow [2023-11-21 22:14:35,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 22:14:35,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-21 22:14:35,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2611 transitions. [2023-11-21 22:14:35,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9425992779783393 [2023-11-21 22:14:35,433 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2611 transitions. [2023-11-21 22:14:35,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2611 transitions. [2023-11-21 22:14:35,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:14:35,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2611 transitions. [2023-11-21 22:14:35,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 522.2) internal successors, (2611), 5 states have internal predecessors, (2611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:14:35,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 554.0) internal successors, (3324), 6 states have internal predecessors, (3324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:14:35,443 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 554.0) internal successors, (3324), 6 states have internal predecessors, (3324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:14:35,443 INFO L175 Difference]: Start difference. First operand has 530 places, 659 transitions, 2838 flow. Second operand 5 states and 2611 transitions. [2023-11-21 22:14:35,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 534 places, 664 transitions, 2888 flow [2023-11-21 22:14:35,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 533 places, 664 transitions, 2887 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:14:35,478 INFO L231 Difference]: Finished difference. Result has 537 places, 663 transitions, 2875 flow [2023-11-21 22:14:35,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=554, PETRI_DIFFERENCE_MINUEND_FLOW=2837, PETRI_DIFFERENCE_MINUEND_PLACES=529, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=659, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=654, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2875, PETRI_PLACES=537, PETRI_TRANSITIONS=663} [2023-11-21 22:14:35,480 INFO L281 CegarLoopForPetriNet]: 506 programPoint places, 31 predicate places. [2023-11-21 22:14:35,480 INFO L495 AbstractCegarLoop]: Abstraction has has 537 places, 663 transitions, 2875 flow [2023-11-21 22:14:35,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 520.25) internal successors, (2081), 4 states have internal predecessors, (2081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:14:35,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:14:35,481 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:14:35,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-21 22:14:35,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-21 22:14:35,697 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-11-21 22:14:35,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:14:35,697 INFO L85 PathProgramCache]: Analyzing trace with hash 899226261, now seen corresponding path program 1 times [2023-11-21 22:14:35,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:14:35,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151736126] [2023-11-21 22:14:35,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:14:35,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:14:35,742 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:14:35,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2059156746] [2023-11-21 22:14:35,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:14:35,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:14:35,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:14:35,744 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:14:35,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18ec7ac5-fc18-4492-8bef-9a18271d6456/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-21 22:14:35,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:14:35,963 INFO L262 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 22:14:35,968 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:14:35,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:14:35,990 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:14:35,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:14:35,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151736126] [2023-11-21 22:14:35,990 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:14:35,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059156746] [2023-11-21 22:14:35,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059156746] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:14:35,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:14:35,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:14:35,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901441780] [2023-11-21 22:14:35,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:14:35,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:14:35,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:14:35,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:14:35,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:14:36,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 518 out of 554 [2023-11-21 22:14:36,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 537 places, 663 transitions, 2875 flow. Second operand has 4 states, 4 states have (on average 520.25) internal successors, (2081), 4 states have internal predecessors, (2081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:14:36,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:14:36,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 518 of 554 [2023-11-21 22:14:36,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand