./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 0e0057cc 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_e501e4c0-c0a9-4ff3-95bb-33c427b97442/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e501e4c0-c0a9-4ff3-95bb-33c427b97442/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e501e4c0-c0a9-4ff3-95bb-33c427b97442/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e501e4c0-c0a9-4ff3-95bb-33c427b97442/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e501e4c0-c0a9-4ff3-95bb-33c427b97442/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e501e4c0-c0a9-4ff3-95bb-33c427b97442/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2a10f98c1a89e2ac521234c9e4f0eca565cc5bc1484e9c7d67d861e216c6f9ba --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:49:31,906 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:49:32,002 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e501e4c0-c0a9-4ff3-95bb-33c427b97442/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-26 11:49:32,008 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:49:32,009 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:49:32,034 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:49:32,035 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:49:32,036 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:49:32,037 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:49:32,037 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:49:32,038 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:49:32,039 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:49:32,039 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:49:32,040 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:49:32,041 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:49:32,041 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:49:32,042 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:49:32,043 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:49:32,043 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:49:32,044 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:49:32,044 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:49:32,045 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:49:32,046 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-26 11:49:32,046 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:49:32,047 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:49:32,047 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:49:32,048 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:49:32,048 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:49:32,049 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:49:32,049 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:49:32,050 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:49:32,050 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:49:32,050 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:49:32,051 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:49:32,051 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:49:32,051 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:49:32,052 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:49:32,052 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:49:32,052 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:49:32,053 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:49:32,053 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:49:32,054 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_e501e4c0-c0a9-4ff3-95bb-33c427b97442/bin/uautomizer-verify-VRDe98Ueme/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e501e4c0-c0a9-4ff3-95bb-33c427b97442/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a10f98c1a89e2ac521234c9e4f0eca565cc5bc1484e9c7d67d861e216c6f9ba [2023-11-26 11:49:32,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:49:32,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:49:32,321 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:49:32,322 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:49:32,323 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:49:32,324 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e501e4c0-c0a9-4ff3-95bb-33c427b97442/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i [2023-11-26 11:49:35,628 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:49:35,968 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:49:35,973 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e501e4c0-c0a9-4ff3-95bb-33c427b97442/sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i [2023-11-26 11:49:36,001 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e501e4c0-c0a9-4ff3-95bb-33c427b97442/bin/uautomizer-verify-VRDe98Ueme/data/00479c1fc/69763f54e4344d6b9b5d9125ba07a838/FLAG4aec04ff3 [2023-11-26 11:49:36,019 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e501e4c0-c0a9-4ff3-95bb-33c427b97442/bin/uautomizer-verify-VRDe98Ueme/data/00479c1fc/69763f54e4344d6b9b5d9125ba07a838 [2023-11-26 11:49:36,026 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:49:36,031 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:49:36,034 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:49:36,034 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:49:36,040 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:49:36,044 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:49:36" (1/1) ... [2023-11-26 11:49:36,045 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33077b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:36, skipping insertion in model container [2023-11-26 11:49:36,046 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:49:36" (1/1) ... [2023-11-26 11:49:36,114 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:49:36,787 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:49:36,809 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:49:36,924 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:49:37,000 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:49:37,001 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:37 WrapperNode [2023-11-26 11:49:37,001 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:49:37,003 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:49:37,003 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:49:37,003 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:49:37,012 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:37" (1/1) ... [2023-11-26 11:49:37,040 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:37" (1/1) ... [2023-11-26 11:49:37,107 INFO L138 Inliner]: procedures = 272, calls = 36, calls flagged for inlining = 6, calls inlined = 8, statements flattened = 290 [2023-11-26 11:49:37,107 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:49:37,108 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:49:37,108 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:49:37,109 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:49:37,119 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:37" (1/1) ... [2023-11-26 11:49:37,119 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:37" (1/1) ... [2023-11-26 11:49:37,127 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:37" (1/1) ... [2023-11-26 11:49:37,128 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:37" (1/1) ... [2023-11-26 11:49:37,170 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:37" (1/1) ... [2023-11-26 11:49:37,176 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:37" (1/1) ... [2023-11-26 11:49:37,179 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:37" (1/1) ... [2023-11-26 11:49:37,193 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:37" (1/1) ... [2023-11-26 11:49:37,203 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:49:37,204 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:49:37,205 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:49:37,205 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:49:37,206 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:37" (1/1) ... [2023-11-26 11:49:37,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:49:37,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e501e4c0-c0a9-4ff3-95bb-33c427b97442/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:49:37,252 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e501e4c0-c0a9-4ff3-95bb-33c427b97442/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:49:37,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e501e4c0-c0a9-4ff3-95bb-33c427b97442/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:49:37,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:49:37,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:49:37,304 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-26 11:49:37,304 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-26 11:49:37,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-26 11:49:37,305 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-26 11:49:37,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:49:37,305 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-26 11:49:37,305 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-26 11:49:37,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-26 11:49:37,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:49:37,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:49:37,308 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 11:49:37,551 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:49:37,554 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:49:38,123 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:49:38,203 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:49:38,206 INFO L309 CfgBuilder]: Removed 25 assume(true) statements. [2023-11-26 11:49:38,208 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:49:38 BoogieIcfgContainer [2023-11-26 11:49:38,209 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:49:38,212 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:49:38,212 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:49:38,215 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:49:38,216 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:49:36" (1/3) ... [2023-11-26 11:49:38,217 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b2a5293 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:49:38, skipping insertion in model container [2023-11-26 11:49:38,217 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:37" (2/3) ... [2023-11-26 11:49:38,217 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b2a5293 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:49:38, skipping insertion in model container [2023-11-26 11:49:38,217 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:49:38" (3/3) ... [2023-11-26 11:49:38,219 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_70-funloop_racefree.i [2023-11-26 11:49:38,226 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 11:49:38,234 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:49:38,234 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-11-26 11:49:38,235 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 11:49:38,324 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-26 11:49:38,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 259 places, 291 transitions, 589 flow [2023-11-26 11:49:38,620 INFO L124 PetriNetUnfolderBase]: 52/426 cut-off events. [2023-11-26 11:49:38,621 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-26 11:49:38,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 431 conditions, 426 events. 52/426 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1899 event pairs, 0 based on Foata normal form. 0/354 useless extension candidates. Maximal degree in co-relation 254. Up to 8 conditions per place. [2023-11-26 11:49:38,638 INFO L82 GeneralOperation]: Start removeDead. Operand has 259 places, 291 transitions, 589 flow [2023-11-26 11:49:38,654 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 259 places, 291 transitions, 589 flow [2023-11-26 11:49:38,672 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:49:38,681 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;@1ad7692b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:49:38,681 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-26 11:49:38,705 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:49:38,706 INFO L124 PetriNetUnfolderBase]: 7/89 cut-off events. [2023-11-26 11:49:38,706 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:49:38,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:49:38,708 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] [2023-11-26 11:49:38,709 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-11-26 11:49:38,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:38,718 INFO L85 PathProgramCache]: Analyzing trace with hash 972554558, now seen corresponding path program 1 times [2023-11-26 11:49:38,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:38,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722288879] [2023-11-26 11:49:38,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:38,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:38,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:39,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:49:39,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:39,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722288879] [2023-11-26 11:49:39,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722288879] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:39,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:39,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:49:39,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592536472] [2023-11-26 11:49:39,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:39,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:49:39,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:39,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:49:39,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:49:39,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 291 [2023-11-26 11:49:39,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 291 transitions, 589 flow. Second operand has 3 states, 3 states have (on average 237.33333333333334) internal successors, (712), 3 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:39,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:49:39,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 291 [2023-11-26 11:49:39,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:49:39,525 INFO L124 PetriNetUnfolderBase]: 98/1313 cut-off events. [2023-11-26 11:49:39,526 INFO L125 PetriNetUnfolderBase]: For 4/7 co-relation queries the response was YES. [2023-11-26 11:49:39,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1506 conditions, 1313 events. 98/1313 cut-off events. For 4/7 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 9118 event pairs, 72 based on Foata normal form. 227/1426 useless extension candidates. Maximal degree in co-relation 1326. Up to 187 conditions per place. [2023-11-26 11:49:39,537 INFO L140 encePairwiseOnDemand]: 259/291 looper letters, 23 selfloop transitions, 2 changer transitions 0/257 dead transitions. [2023-11-26 11:49:39,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 257 transitions, 571 flow [2023-11-26 11:49:39,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:49:39,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:49:39,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 764 transitions. [2023-11-26 11:49:39,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8751431844215349 [2023-11-26 11:49:39,562 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 764 transitions. [2023-11-26 11:49:39,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 764 transitions. [2023-11-26 11:49:39,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:49:39,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 764 transitions. [2023-11-26 11:49:39,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:39,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:39,586 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:39,588 INFO L175 Difference]: Start difference. First operand has 259 places, 291 transitions, 589 flow. Second operand 3 states and 764 transitions. [2023-11-26 11:49:39,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 257 transitions, 571 flow [2023-11-26 11:49:39,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 257 transitions, 571 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 11:49:39,606 INFO L231 Difference]: Finished difference. Result has 256 places, 257 transitions, 531 flow [2023-11-26 11:49:39,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=531, PETRI_PLACES=256, PETRI_TRANSITIONS=257} [2023-11-26 11:49:39,614 INFO L281 CegarLoopForPetriNet]: 259 programPoint places, -3 predicate places. [2023-11-26 11:49:39,614 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 257 transitions, 531 flow [2023-11-26 11:49:39,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 237.33333333333334) internal successors, (712), 3 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:39,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:49:39,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:49:39,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:49:39,616 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-11-26 11:49:39,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:39,617 INFO L85 PathProgramCache]: Analyzing trace with hash -2115554242, now seen corresponding path program 1 times [2023-11-26 11:49:39,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:39,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052858052] [2023-11-26 11:49:39,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:39,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:39,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:39,836 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:49:39,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:39,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052858052] [2023-11-26 11:49:39,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052858052] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:49:39,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017607713] [2023-11-26 11:49:39,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:39,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:39,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e501e4c0-c0a9-4ff3-95bb-33c427b97442/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:49:39,842 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e501e4c0-c0a9-4ff3-95bb-33c427b97442/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:49:39,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e501e4c0-c0a9-4ff3-95bb-33c427b97442/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:49:39,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:39,989 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:49:39,995 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:49:40,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 11:49:40,033 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:49:40,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017607713] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:40,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:49:40,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-26 11:49:40,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963058941] [2023-11-26 11:49:40,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:40,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:49:40,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:40,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:49:40,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:49:40,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 291 [2023-11-26 11:49:40,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 257 transitions, 531 flow. Second operand has 3 states, 3 states have (on average 237.33333333333334) internal successors, (712), 3 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:40,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:49:40,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 291 [2023-11-26 11:49:40,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:49:40,380 INFO L124 PetriNetUnfolderBase]: 117/1336 cut-off events. [2023-11-26 11:49:40,380 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-26 11:49:40,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1566 conditions, 1336 events. 117/1336 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 9542 event pairs, 0 based on Foata normal form. 1/1223 useless extension candidates. Maximal degree in co-relation 1534. Up to 208 conditions per place. [2023-11-26 11:49:40,394 INFO L140 encePairwiseOnDemand]: 288/291 looper letters, 30 selfloop transitions, 2 changer transitions 0/265 dead transitions. [2023-11-26 11:49:40,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 265 transitions, 611 flow [2023-11-26 11:49:40,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:49:40,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:49:40,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 741 transitions. [2023-11-26 11:49:40,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8487972508591065 [2023-11-26 11:49:40,399 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 741 transitions. [2023-11-26 11:49:40,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 741 transitions. [2023-11-26 11:49:40,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:49:40,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 741 transitions. [2023-11-26 11:49:40,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 247.0) internal successors, (741), 3 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:40,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:40,408 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:40,410 INFO L175 Difference]: Start difference. First operand has 256 places, 257 transitions, 531 flow. Second operand 3 states and 741 transitions. [2023-11-26 11:49:40,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 265 transitions, 611 flow [2023-11-26 11:49:40,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 265 transitions, 609 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:49:40,422 INFO L231 Difference]: Finished difference. Result has 258 places, 257 transitions, 537 flow [2023-11-26 11:49:40,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=537, PETRI_PLACES=258, PETRI_TRANSITIONS=257} [2023-11-26 11:49:40,425 INFO L281 CegarLoopForPetriNet]: 259 programPoint places, -1 predicate places. [2023-11-26 11:49:40,426 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 257 transitions, 537 flow [2023-11-26 11:49:40,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 237.33333333333334) internal successors, (712), 3 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:40,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:49:40,432 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:49:40,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e501e4c0-c0a9-4ff3-95bb-33c427b97442/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 11:49:40,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e501e4c0-c0a9-4ff3-95bb-33c427b97442/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:40,648 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-11-26 11:49:40,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:40,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1926919945, now seen corresponding path program 1 times [2023-11-26 11:49:40,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:40,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109348634] [2023-11-26 11:49:40,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:40,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:40,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:40,787 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 11:49:40,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:40,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109348634] [2023-11-26 11:49:40,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109348634] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:49:40,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858638202] [2023-11-26 11:49:40,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:40,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:40,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e501e4c0-c0a9-4ff3-95bb-33c427b97442/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:49:40,790 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e501e4c0-c0a9-4ff3-95bb-33c427b97442/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:49:40,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e501e4c0-c0a9-4ff3-95bb-33c427b97442/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:49:40,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:40,896 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:49:40,898 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:49:40,969 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 11:49:40,969 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:49:41,031 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 11:49:41,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858638202] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:49:41,032 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:49:41,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-26 11:49:41,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362149317] [2023-11-26 11:49:41,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:49:41,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 11:49:41,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:41,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 11:49:41,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:49:41,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 291 [2023-11-26 11:49:41,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 257 transitions, 537 flow. Second operand has 10 states, 10 states have (on average 234.9) internal successors, (2349), 10 states have internal predecessors, (2349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:41,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:49:41,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 291 [2023-11-26 11:49:41,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:49:41,474 INFO L124 PetriNetUnfolderBase]: 95/1223 cut-off events. [2023-11-26 11:49:41,474 INFO L125 PetriNetUnfolderBase]: For 5/8 co-relation queries the response was YES. [2023-11-26 11:49:41,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1431 conditions, 1223 events. 95/1223 cut-off events. For 5/8 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 8292 event pairs, 72 based on Foata normal form. 2/1121 useless extension candidates. Maximal degree in co-relation 1368. Up to 179 conditions per place. [2023-11-26 11:49:41,485 INFO L140 encePairwiseOnDemand]: 285/291 looper letters, 27 selfloop transitions, 9 changer transitions 0/265 dead transitions. [2023-11-26 11:49:41,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 265 transitions, 627 flow [2023-11-26 11:49:41,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 11:49:41,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-26 11:49:41,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2135 transitions. [2023-11-26 11:49:41,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.815196639938908 [2023-11-26 11:49:41,493 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2135 transitions. [2023-11-26 11:49:41,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2135 transitions. [2023-11-26 11:49:41,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:49:41,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2135 transitions. [2023-11-26 11:49:41,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 237.22222222222223) internal successors, (2135), 9 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:41,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 291.0) internal successors, (2910), 10 states have internal predecessors, (2910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:41,514 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 291.0) internal successors, (2910), 10 states have internal predecessors, (2910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:41,514 INFO L175 Difference]: Start difference. First operand has 258 places, 257 transitions, 537 flow. Second operand 9 states and 2135 transitions. [2023-11-26 11:49:41,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 265 transitions, 627 flow [2023-11-26 11:49:41,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 265 transitions, 623 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:49:41,550 INFO L231 Difference]: Finished difference. Result has 267 places, 263 transitions, 583 flow [2023-11-26 11:49:41,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=533, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=583, PETRI_PLACES=267, PETRI_TRANSITIONS=263} [2023-11-26 11:49:41,552 INFO L281 CegarLoopForPetriNet]: 259 programPoint places, 8 predicate places. [2023-11-26 11:49:41,552 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 263 transitions, 583 flow [2023-11-26 11:49:41,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 234.9) internal successors, (2349), 10 states have internal predecessors, (2349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:41,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:49:41,557 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:49:41,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e501e4c0-c0a9-4ff3-95bb-33c427b97442/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:49:41,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e501e4c0-c0a9-4ff3-95bb-33c427b97442/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-26 11:49:41,763 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-11-26 11:49:41,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:41,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1681037065, now seen corresponding path program 2 times [2023-11-26 11:49:41,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:41,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705072359] [2023-11-26 11:49:41,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:41,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:41,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:42,009 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 11:49:42,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:42,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705072359] [2023-11-26 11:49:42,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705072359] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:49:42,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513066468] [2023-11-26 11:49:42,011 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:49:42,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:42,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e501e4c0-c0a9-4ff3-95bb-33c427b97442/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:49:42,012 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e501e4c0-c0a9-4ff3-95bb-33c427b97442/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:49:42,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e501e4c0-c0a9-4ff3-95bb-33c427b97442/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 11:49:42,125 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 11:49:42,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:49:42,127 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:49:42,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:49:42,201 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 11:49:42,201 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:49:42,324 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 11:49:42,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513066468] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:49:42,325 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:49:42,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-11-26 11:49:42,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033380324] [2023-11-26 11:49:42,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:49:42,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-26 11:49:42,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:42,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-26 11:49:42,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-11-26 11:49:42,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 291 [2023-11-26 11:49:42,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 263 transitions, 583 flow. Second operand has 18 states, 18 states have (on average 234.94444444444446) internal successors, (4229), 18 states have internal predecessors, (4229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:42,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:49:42,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 291 [2023-11-26 11:49:42,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:49:42,926 INFO L124 PetriNetUnfolderBase]: 95/1243 cut-off events. [2023-11-26 11:49:42,926 INFO L125 PetriNetUnfolderBase]: For 32/35 co-relation queries the response was YES. [2023-11-26 11:49:42,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1515 conditions, 1243 events. 95/1243 cut-off events. For 32/35 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 8305 event pairs, 72 based on Foata normal form. 4/1143 useless extension candidates. Maximal degree in co-relation 1371. Up to 179 conditions per place. [2023-11-26 11:49:42,938 INFO L140 encePairwiseOnDemand]: 285/291 looper letters, 31 selfloop transitions, 21 changer transitions 0/281 dead transitions. [2023-11-26 11:49:42,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 281 transitions, 783 flow [2023-11-26 11:49:42,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-26 11:49:42,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-26 11:49:42,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4949 transitions. [2023-11-26 11:49:42,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8098510882016037 [2023-11-26 11:49:42,954 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4949 transitions. [2023-11-26 11:49:42,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4949 transitions. [2023-11-26 11:49:42,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:49:42,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4949 transitions. [2023-11-26 11:49:42,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 235.66666666666666) internal successors, (4949), 21 states have internal predecessors, (4949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:42,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 291.0) internal successors, (6402), 22 states have internal predecessors, (6402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:42,998 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 291.0) internal successors, (6402), 22 states have internal predecessors, (6402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:42,998 INFO L175 Difference]: Start difference. First operand has 267 places, 263 transitions, 583 flow. Second operand 21 states and 4949 transitions. [2023-11-26 11:49:42,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 281 transitions, 783 flow [2023-11-26 11:49:43,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 281 transitions, 769 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-26 11:49:43,011 INFO L231 Difference]: Finished difference. Result has 291 places, 276 transitions, 707 flow [2023-11-26 11:49:43,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=577, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=707, PETRI_PLACES=291, PETRI_TRANSITIONS=276} [2023-11-26 11:49:43,014 INFO L281 CegarLoopForPetriNet]: 259 programPoint places, 32 predicate places. [2023-11-26 11:49:43,014 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 276 transitions, 707 flow [2023-11-26 11:49:43,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 234.94444444444446) internal successors, (4229), 18 states have internal predecessors, (4229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:43,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:49:43,017 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:49:43,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e501e4c0-c0a9-4ff3-95bb-33c427b97442/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 11:49:43,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e501e4c0-c0a9-4ff3-95bb-33c427b97442/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:43,223 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-11-26 11:49:43,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:43,223 INFO L85 PathProgramCache]: Analyzing trace with hash -300603145, now seen corresponding path program 3 times [2023-11-26 11:49:43,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:43,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828843327] [2023-11-26 11:49:43,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:43,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:43,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:43,642 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 11:49:43,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:43,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828843327] [2023-11-26 11:49:43,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828843327] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:49:43,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102906481] [2023-11-26 11:49:43,648 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-26 11:49:43,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:43,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e501e4c0-c0a9-4ff3-95bb-33c427b97442/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:49:43,650 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e501e4c0-c0a9-4ff3-95bb-33c427b97442/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:49:43,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e501e4c0-c0a9-4ff3-95bb-33c427b97442/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 11:49:43,803 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-11-26 11:49:43,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:49:43,805 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-26 11:49:43,809 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:49:43,923 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 11:49:43,923 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:49:44,160 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 11:49:44,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102906481] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:49:44,161 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:49:44,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2023-11-26 11:49:44,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582329826] [2023-11-26 11:49:44,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:49:44,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-26 11:49:44,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:44,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-26 11:49:44,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2023-11-26 11:49:44,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 291 [2023-11-26 11:49:44,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 276 transitions, 707 flow. Second operand has 23 states, 23 states have (on average 235.04347826086956) internal successors, (5406), 23 states have internal predecessors, (5406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:44,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:49:44,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 291 [2023-11-26 11:49:44,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:49:44,925 INFO L124 PetriNetUnfolderBase]: 95/1258 cut-off events. [2023-11-26 11:49:44,926 INFO L125 PetriNetUnfolderBase]: For 133/136 co-relation queries the response was YES. [2023-11-26 11:49:44,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1613 conditions, 1258 events. 95/1258 cut-off events. For 133/136 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 8317 event pairs, 72 based on Foata normal form. 3/1157 useless extension candidates. Maximal degree in co-relation 1375. Up to 179 conditions per place. [2023-11-26 11:49:44,936 INFO L140 encePairwiseOnDemand]: 285/291 looper letters, 34 selfloop transitions, 30 changer transitions 0/293 dead transitions. [2023-11-26 11:49:44,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 293 transitions, 963 flow [2023-11-26 11:49:44,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-26 11:49:44,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-11-26 11:49:44,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 7057 transitions. [2023-11-26 11:49:44,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8083619702176403 [2023-11-26 11:49:44,959 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 7057 transitions. [2023-11-26 11:49:44,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 7057 transitions. [2023-11-26 11:49:44,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:49:44,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 7057 transitions. [2023-11-26 11:49:44,986 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 235.23333333333332) internal successors, (7057), 30 states have internal predecessors, (7057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:45,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 291.0) internal successors, (9021), 31 states have internal predecessors, (9021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:45,019 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 291.0) internal successors, (9021), 31 states have internal predecessors, (9021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:45,019 INFO L175 Difference]: Start difference. First operand has 291 places, 276 transitions, 707 flow. Second operand 30 states and 7057 transitions. [2023-11-26 11:49:45,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 293 transitions, 963 flow [2023-11-26 11:49:45,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 293 transitions, 933 flow, removed 9 selfloop flow, removed 6 redundant places. [2023-11-26 11:49:45,038 INFO L231 Difference]: Finished difference. Result has 318 places, 286 transitions, 835 flow [2023-11-26 11:49:45,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=683, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=835, PETRI_PLACES=318, PETRI_TRANSITIONS=286} [2023-11-26 11:49:45,039 INFO L281 CegarLoopForPetriNet]: 259 programPoint places, 59 predicate places. [2023-11-26 11:49:45,039 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 286 transitions, 835 flow [2023-11-26 11:49:45,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 235.04347826086956) internal successors, (5406), 23 states have internal predecessors, (5406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:45,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:49:45,042 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:49:45,053 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e501e4c0-c0a9-4ff3-95bb-33c427b97442/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-26 11:49:45,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e501e4c0-c0a9-4ff3-95bb-33c427b97442/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:45,248 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-11-26 11:49:45,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:45,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1163017207, now seen corresponding path program 4 times [2023-11-26 11:49:45,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:45,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119968447] [2023-11-26 11:49:45,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:45,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:45,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:49:45,287 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:49:45,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:49:45,332 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:49:45,332 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 11:49:45,333 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-11-26 11:49:45,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2023-11-26 11:49:45,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2023-11-26 11:49:45,336 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2023-11-26 11:49:45,336 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2023-11-26 11:49:45,336 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2023-11-26 11:49:45,336 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2023-11-26 11:49:45,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2023-11-26 11:49:45,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2023-11-26 11:49:45,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2023-11-26 11:49:45,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2023-11-26 11:49:45,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2023-11-26 11:49:45,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2023-11-26 11:49:45,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2023-11-26 11:49:45,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2023-11-26 11:49:45,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2023-11-26 11:49:45,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2023-11-26 11:49:45,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 11:49:45,339 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1] [2023-11-26 11:49:45,341 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-26 11:49:45,341 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-26 11:49:45,423 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-26 11:49:45,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 361 places, 407 transitions, 830 flow [2023-11-26 11:49:45,589 INFO L124 PetriNetUnfolderBase]: 87/709 cut-off events. [2023-11-26 11:49:45,589 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-26 11:49:45,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 721 conditions, 709 events. 87/709 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 3946 event pairs, 0 based on Foata normal form. 0/589 useless extension candidates. Maximal degree in co-relation 428. Up to 12 conditions per place. [2023-11-26 11:49:45,600 INFO L82 GeneralOperation]: Start removeDead. Operand has 361 places, 407 transitions, 830 flow [2023-11-26 11:49:45,612 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 361 places, 407 transitions, 830 flow [2023-11-26 11:49:45,613 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:49:45,614 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;@1ad7692b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:49:45,614 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-11-26 11:49:45,621 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:49:45,621 INFO L124 PetriNetUnfolderBase]: 7/89 cut-off events. [2023-11-26 11:49:45,622 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:49:45,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:49:45,622 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] [2023-11-26 11:49:45,622 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-26 11:49:45,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:45,623 INFO L85 PathProgramCache]: Analyzing trace with hash -996074242, now seen corresponding path program 1 times [2023-11-26 11:49:45,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:45,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204719071] [2023-11-26 11:49:45,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:45,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:45,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:45,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:49:45,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:45,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204719071] [2023-11-26 11:49:45,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204719071] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:45,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:45,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:49:45,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390346542] [2023-11-26 11:49:45,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:45,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:49:45,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:45,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:49:45,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:49:45,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 407 [2023-11-26 11:49:45,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 407 transitions, 830 flow. Second operand has 3 states, 3 states have (on average 329.3333333333333) internal successors, (988), 3 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:45,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:49:45,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 407 [2023-11-26 11:49:45,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:49:48,349 INFO L124 PetriNetUnfolderBase]: 1782/12827 cut-off events. [2023-11-26 11:49:48,350 INFO L125 PetriNetUnfolderBase]: For 131/143 co-relation queries the response was YES. [2023-11-26 11:49:48,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15491 conditions, 12827 events. 1782/12827 cut-off events. For 131/143 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 157930 event pairs, 1464 based on Foata normal form. 3186/14940 useless extension candidates. Maximal degree in co-relation 13807. Up to 2601 conditions per place. [2023-11-26 11:49:48,517 INFO L140 encePairwiseOnDemand]: 362/407 looper letters, 33 selfloop transitions, 2 changer transitions 0/357 dead transitions. [2023-11-26 11:49:48,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 357 transitions, 800 flow [2023-11-26 11:49:48,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:49:48,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:49:48,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1063 transitions. [2023-11-26 11:49:48,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8705978705978706 [2023-11-26 11:49:48,522 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1063 transitions. [2023-11-26 11:49:48,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1063 transitions. [2023-11-26 11:49:48,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:49:48,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1063 transitions. [2023-11-26 11:49:48,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 354.3333333333333) internal successors, (1063), 3 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:48,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:48,532 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:48,532 INFO L175 Difference]: Start difference. First operand has 361 places, 407 transitions, 830 flow. Second operand 3 states and 1063 transitions. [2023-11-26 11:49:48,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 357 transitions, 800 flow [2023-11-26 11:49:48,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 357 transitions, 800 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 11:49:48,543 INFO L231 Difference]: Finished difference. Result has 355 places, 357 transitions, 740 flow [2023-11-26 11:49:48,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=728, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=740, PETRI_PLACES=355, PETRI_TRANSITIONS=357} [2023-11-26 11:49:48,545 INFO L281 CegarLoopForPetriNet]: 361 programPoint places, -6 predicate places. [2023-11-26 11:49:48,545 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 357 transitions, 740 flow [2023-11-26 11:49:48,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 329.3333333333333) internal successors, (988), 3 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:48,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:49:48,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:49:48,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 11:49:48,547 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-26 11:49:48,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:48,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1434452907, now seen corresponding path program 1 times [2023-11-26 11:49:48,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:48,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666321095] [2023-11-26 11:49:48,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:48,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:48,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:48,622 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:49:48,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:48,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666321095] [2023-11-26 11:49:48,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666321095] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:49:48,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948317880] [2023-11-26 11:49:48,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:48,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:48,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e501e4c0-c0a9-4ff3-95bb-33c427b97442/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:49:48,625 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e501e4c0-c0a9-4ff3-95bb-33c427b97442/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:49:48,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e501e4c0-c0a9-4ff3-95bb-33c427b97442/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 11:49:48,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:48,738 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:49:48,740 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:49:48,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 11:49:48,750 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:49:48,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948317880] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:48,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:49:48,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-26 11:49:48,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337069622] [2023-11-26 11:49:48,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:48,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:49:48,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:48,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:49:48,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:49:48,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 407 [2023-11-26 11:49:48,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 357 transitions, 740 flow. Second operand has 3 states, 3 states have (on average 329.3333333333333) internal successors, (988), 3 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:48,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:49:48,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 407 [2023-11-26 11:49:48,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:49:51,241 INFO L124 PetriNetUnfolderBase]: 2254/14485 cut-off events. [2023-11-26 11:49:51,241 INFO L125 PetriNetUnfolderBase]: For 193/194 co-relation queries the response was YES. [2023-11-26 11:49:51,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17817 conditions, 14485 events. 2254/14485 cut-off events. For 193/194 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 180983 event pairs, 1912 based on Foata normal form. 1/13210 useless extension candidates. Maximal degree in co-relation 17784. Up to 3253 conditions per place. [2023-11-26 11:49:51,493 INFO L140 encePairwiseOnDemand]: 404/407 looper letters, 41 selfloop transitions, 2 changer transitions 0/366 dead transitions. [2023-11-26 11:49:51,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 366 transitions, 844 flow [2023-11-26 11:49:51,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:49:51,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:49:51,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1028 transitions. [2023-11-26 11:49:51,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8419328419328419 [2023-11-26 11:49:51,497 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1028 transitions. [2023-11-26 11:49:51,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1028 transitions. [2023-11-26 11:49:51,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:49:51,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1028 transitions. [2023-11-26 11:49:51,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 342.6666666666667) internal successors, (1028), 3 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:51,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:51,506 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:51,506 INFO L175 Difference]: Start difference. First operand has 355 places, 357 transitions, 740 flow. Second operand 3 states and 1028 transitions. [2023-11-26 11:49:51,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 366 transitions, 844 flow [2023-11-26 11:49:51,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 366 transitions, 842 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:49:51,521 INFO L231 Difference]: Finished difference. Result has 357 places, 358 transitions, 750 flow [2023-11-26 11:49:51,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=738, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=750, PETRI_PLACES=357, PETRI_TRANSITIONS=358} [2023-11-26 11:49:51,524 INFO L281 CegarLoopForPetriNet]: 361 programPoint places, -4 predicate places. [2023-11-26 11:49:51,524 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 358 transitions, 750 flow [2023-11-26 11:49:51,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 329.3333333333333) internal successors, (988), 3 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:51,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:49:51,525 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] [2023-11-26 11:49:51,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e501e4c0-c0a9-4ff3-95bb-33c427b97442/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 11:49:51,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e501e4c0-c0a9-4ff3-95bb-33c427b97442/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:51,733 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-26 11:49:51,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:51,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1465531639, now seen corresponding path program 1 times [2023-11-26 11:49:51,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:51,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426363398] [2023-11-26 11:49:51,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:51,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:51,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:51,799 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 11:49:51,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:51,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426363398] [2023-11-26 11:49:51,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426363398] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:49:51,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805964613] [2023-11-26 11:49:51,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:51,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:51,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e501e4c0-c0a9-4ff3-95bb-33c427b97442/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:49:51,802 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e501e4c0-c0a9-4ff3-95bb-33c427b97442/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:49:51,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e501e4c0-c0a9-4ff3-95bb-33c427b97442/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 11:49:51,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:51,915 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:49:51,917 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:49:51,926 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:49:51,926 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:49:51,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805964613] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:51,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:49:51,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-26 11:49:51,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281076331] [2023-11-26 11:49:51,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:51,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:49:51,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:51,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:49:51,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:49:51,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 407 [2023-11-26 11:49:51,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 358 transitions, 750 flow. Second operand has 3 states, 3 states have (on average 329.6666666666667) internal successors, (989), 3 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:51,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:49:51,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 407 [2023-11-26 11:49:51,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:49:56,237 INFO L124 PetriNetUnfolderBase]: 3780/24899 cut-off events. [2023-11-26 11:49:56,237 INFO L125 PetriNetUnfolderBase]: For 154/158 co-relation queries the response was YES. [2023-11-26 11:49:56,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30455 conditions, 24899 events. 3780/24899 cut-off events. For 154/158 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 334250 event pairs, 1768 based on Foata normal form. 90/23084 useless extension candidates. Maximal degree in co-relation 30414. Up to 3212 conditions per place. [2023-11-26 11:49:56,487 INFO L140 encePairwiseOnDemand]: 404/407 looper letters, 57 selfloop transitions, 2 changer transitions 0/383 dead transitions. [2023-11-26 11:49:56,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 383 transitions, 918 flow [2023-11-26 11:49:56,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:49:56,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:49:56,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1044 transitions. [2023-11-26 11:49:56,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.855036855036855 [2023-11-26 11:49:56,491 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1044 transitions. [2023-11-26 11:49:56,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1044 transitions. [2023-11-26 11:49:56,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:49:56,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1044 transitions. [2023-11-26 11:49:56,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 348.0) internal successors, (1044), 3 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:56,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:56,499 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:56,500 INFO L175 Difference]: Start difference. First operand has 357 places, 358 transitions, 750 flow. Second operand 3 states and 1044 transitions. [2023-11-26 11:49:56,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 383 transitions, 918 flow [2023-11-26 11:49:56,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 383 transitions, 916 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:49:56,510 INFO L231 Difference]: Finished difference. Result has 359 places, 359 transitions, 760 flow [2023-11-26 11:49:56,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=760, PETRI_PLACES=359, PETRI_TRANSITIONS=359} [2023-11-26 11:49:56,512 INFO L281 CegarLoopForPetriNet]: 361 programPoint places, -2 predicate places. [2023-11-26 11:49:56,512 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 359 transitions, 760 flow [2023-11-26 11:49:56,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 329.6666666666667) internal successors, (989), 3 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:56,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:49:56,513 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:49:56,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e501e4c0-c0a9-4ff3-95bb-33c427b97442/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 11:49:56,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e501e4c0-c0a9-4ff3-95bb-33c427b97442/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:56,720 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-26 11:49:56,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:56,721 INFO L85 PathProgramCache]: Analyzing trace with hash -980676230, now seen corresponding path program 1 times [2023-11-26 11:49:56,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:56,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309341694] [2023-11-26 11:49:56,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:56,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:56,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:56,810 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-26 11:49:56,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:56,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309341694] [2023-11-26 11:49:56,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309341694] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:49:56,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829863349] [2023-11-26 11:49:56,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:56,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:56,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e501e4c0-c0a9-4ff3-95bb-33c427b97442/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:49:56,812 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e501e4c0-c0a9-4ff3-95bb-33c427b97442/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:49:56,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e501e4c0-c0a9-4ff3-95bb-33c427b97442/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 11:49:56,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:56,938 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:49:56,940 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:49:56,961 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-26 11:49:56,961 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:49:56,997 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-26 11:49:56,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829863349] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:49:56,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:49:56,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-26 11:49:57,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110467763] [2023-11-26 11:49:57,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:49:57,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 11:49:57,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:57,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 11:49:57,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:49:57,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 407 [2023-11-26 11:49:57,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 359 transitions, 760 flow. Second operand has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:57,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:49:57,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 407 [2023-11-26 11:49:57,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:50:01,308 INFO L124 PetriNetUnfolderBase]: 3247/22657 cut-off events. [2023-11-26 11:50:01,309 INFO L125 PetriNetUnfolderBase]: For 161/171 co-relation queries the response was YES. [2023-11-26 11:50:01,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27456 conditions, 22657 events. 3247/22657 cut-off events. For 161/171 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 302662 event pairs, 2680 based on Foata normal form. 2/20781 useless extension candidates. Maximal degree in co-relation 27391. Up to 4691 conditions per place. [2023-11-26 11:50:01,540 INFO L140 encePairwiseOnDemand]: 401/407 looper letters, 37 selfloop transitions, 9 changer transitions 0/367 dead transitions. [2023-11-26 11:50:01,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 367 transitions, 870 flow [2023-11-26 11:50:01,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 11:50:01,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-26 11:50:01,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2973 transitions. [2023-11-26 11:50:01,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8116298116298116 [2023-11-26 11:50:01,552 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2973 transitions. [2023-11-26 11:50:01,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2973 transitions. [2023-11-26 11:50:01,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:50:01,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2973 transitions. [2023-11-26 11:50:01,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 330.3333333333333) internal successors, (2973), 9 states have internal predecessors, (2973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:01,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 407.0) internal successors, (4070), 10 states have internal predecessors, (4070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:01,577 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 407.0) internal successors, (4070), 10 states have internal predecessors, (4070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:01,577 INFO L175 Difference]: Start difference. First operand has 359 places, 359 transitions, 760 flow. Second operand 9 states and 2973 transitions. [2023-11-26 11:50:01,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 367 transitions, 870 flow [2023-11-26 11:50:01,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 367 transitions, 868 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:50:01,589 INFO L231 Difference]: Finished difference. Result has 369 places, 365 transitions, 808 flow [2023-11-26 11:50:01,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=758, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=808, PETRI_PLACES=369, PETRI_TRANSITIONS=365} [2023-11-26 11:50:01,591 INFO L281 CegarLoopForPetriNet]: 361 programPoint places, 8 predicate places. [2023-11-26 11:50:01,591 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 365 transitions, 808 flow [2023-11-26 11:50:01,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:01,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:50:01,593 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:01,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e501e4c0-c0a9-4ff3-95bb-33c427b97442/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-26 11:50:01,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e501e4c0-c0a9-4ff3-95bb-33c427b97442/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-26 11:50:01,806 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-26 11:50:01,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:01,806 INFO L85 PathProgramCache]: Analyzing trace with hash -531220518, now seen corresponding path program 2 times [2023-11-26 11:50:01,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:01,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047419490] [2023-11-26 11:50:01,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:01,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:01,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:01,976 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-26 11:50:01,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:01,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047419490] [2023-11-26 11:50:01,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047419490] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:50:01,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695222575] [2023-11-26 11:50:01,980 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:50:01,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:01,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e501e4c0-c0a9-4ff3-95bb-33c427b97442/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:50:01,982 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e501e4c0-c0a9-4ff3-95bb-33c427b97442/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:50:02,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e501e4c0-c0a9-4ff3-95bb-33c427b97442/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-26 11:50:02,114 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 11:50:02,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:50:02,116 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:50:02,118 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:02,178 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-26 11:50:02,178 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:50:02,299 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-26 11:50:02,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [695222575] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:50:02,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:50:02,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-11-26 11:50:02,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316746367] [2023-11-26 11:50:02,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:50:02,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-26 11:50:02,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:02,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-26 11:50:02,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-11-26 11:50:02,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 407 [2023-11-26 11:50:02,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 365 transitions, 808 flow. Second operand has 18 states, 18 states have (on average 327.0) internal successors, (5886), 18 states have internal predecessors, (5886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:02,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:50:02,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 407 [2023-11-26 11:50:02,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:50:07,116 INFO L124 PetriNetUnfolderBase]: 3247/22677 cut-off events. [2023-11-26 11:50:07,117 INFO L125 PetriNetUnfolderBase]: For 187/197 co-relation queries the response was YES. [2023-11-26 11:50:07,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27540 conditions, 22677 events. 3247/22677 cut-off events. For 187/197 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 302599 event pairs, 2680 based on Foata normal form. 4/20803 useless extension candidates. Maximal degree in co-relation 27394. Up to 4691 conditions per place. [2023-11-26 11:50:07,334 INFO L140 encePairwiseOnDemand]: 401/407 looper letters, 41 selfloop transitions, 21 changer transitions 0/383 dead transitions. [2023-11-26 11:50:07,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 383 transitions, 1028 flow [2023-11-26 11:50:07,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-26 11:50:07,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-26 11:50:07,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 6891 transitions. [2023-11-26 11:50:07,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8062478062478062 [2023-11-26 11:50:07,359 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 6891 transitions. [2023-11-26 11:50:07,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 6891 transitions. [2023-11-26 11:50:07,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:50:07,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 6891 transitions. [2023-11-26 11:50:07,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 328.14285714285717) internal successors, (6891), 21 states have internal predecessors, (6891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:07,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 407.0) internal successors, (8954), 22 states have internal predecessors, (8954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:07,581 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 407.0) internal successors, (8954), 22 states have internal predecessors, (8954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:07,581 INFO L175 Difference]: Start difference. First operand has 369 places, 365 transitions, 808 flow. Second operand 21 states and 6891 transitions. [2023-11-26 11:50:07,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 383 transitions, 1028 flow [2023-11-26 11:50:07,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 383 transitions, 1014 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-26 11:50:07,592 INFO L231 Difference]: Finished difference. Result has 393 places, 378 transitions, 932 flow [2023-11-26 11:50:07,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=802, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=932, PETRI_PLACES=393, PETRI_TRANSITIONS=378} [2023-11-26 11:50:07,594 INFO L281 CegarLoopForPetriNet]: 361 programPoint places, 32 predicate places. [2023-11-26 11:50:07,594 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 378 transitions, 932 flow [2023-11-26 11:50:07,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 327.0) internal successors, (5886), 18 states have internal predecessors, (5886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:07,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:50:07,596 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:07,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e501e4c0-c0a9-4ff3-95bb-33c427b97442/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-26 11:50:07,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e501e4c0-c0a9-4ff3-95bb-33c427b97442/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-26 11:50:07,802 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-26 11:50:07,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:07,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1904010086, now seen corresponding path program 3 times [2023-11-26 11:50:07,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:07,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563779565] [2023-11-26 11:50:07,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:07,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:07,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:08,167 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-26 11:50:08,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:08,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563779565] [2023-11-26 11:50:08,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563779565] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:50:08,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074071102] [2023-11-26 11:50:08,169 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-26 11:50:08,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:08,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e501e4c0-c0a9-4ff3-95bb-33c427b97442/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:50:08,170 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e501e4c0-c0a9-4ff3-95bb-33c427b97442/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:50:08,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e501e4c0-c0a9-4ff3-95bb-33c427b97442/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-26 11:50:08,353 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-11-26 11:50:08,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:50:08,355 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-26 11:50:08,358 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:08,451 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-26 11:50:08,451 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:50:08,694 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-26 11:50:08,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074071102] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:50:08,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:50:08,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2023-11-26 11:50:08,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593502138] [2023-11-26 11:50:08,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:50:08,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-26 11:50:08,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:08,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-26 11:50:08,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2023-11-26 11:50:08,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 407 [2023-11-26 11:50:08,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 378 transitions, 932 flow. Second operand has 23 states, 23 states have (on average 327.0869565217391) internal successors, (7523), 23 states have internal predecessors, (7523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:08,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:50:08,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 407 [2023-11-26 11:50:08,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:50:13,676 INFO L124 PetriNetUnfolderBase]: 3247/22692 cut-off events. [2023-11-26 11:50:13,676 INFO L125 PetriNetUnfolderBase]: For 288/298 co-relation queries the response was YES. [2023-11-26 11:50:13,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27638 conditions, 22692 events. 3247/22692 cut-off events. For 288/298 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 302955 event pairs, 2680 based on Foata normal form. 3/20817 useless extension candidates. Maximal degree in co-relation 27398. Up to 4691 conditions per place. [2023-11-26 11:50:13,884 INFO L140 encePairwiseOnDemand]: 401/407 looper letters, 44 selfloop transitions, 30 changer transitions 0/395 dead transitions. [2023-11-26 11:50:13,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 395 transitions, 1208 flow [2023-11-26 11:50:13,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-26 11:50:13,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-11-26 11:50:13,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 9827 transitions. [2023-11-26 11:50:13,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8048321048321049 [2023-11-26 11:50:13,899 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 9827 transitions. [2023-11-26 11:50:13,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 9827 transitions. [2023-11-26 11:50:13,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:50:13,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 9827 transitions. [2023-11-26 11:50:13,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 327.56666666666666) internal successors, (9827), 30 states have internal predecessors, (9827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:13,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 407.0) internal successors, (12617), 31 states have internal predecessors, (12617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:13,941 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 407.0) internal successors, (12617), 31 states have internal predecessors, (12617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:13,941 INFO L175 Difference]: Start difference. First operand has 393 places, 378 transitions, 932 flow. Second operand 30 states and 9827 transitions. [2023-11-26 11:50:13,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 395 transitions, 1208 flow [2023-11-26 11:50:13,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 395 transitions, 1178 flow, removed 9 selfloop flow, removed 6 redundant places. [2023-11-26 11:50:13,953 INFO L231 Difference]: Finished difference. Result has 420 places, 388 transitions, 1060 flow [2023-11-26 11:50:13,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=908, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1060, PETRI_PLACES=420, PETRI_TRANSITIONS=388} [2023-11-26 11:50:13,955 INFO L281 CegarLoopForPetriNet]: 361 programPoint places, 59 predicate places. [2023-11-26 11:50:13,955 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 388 transitions, 1060 flow [2023-11-26 11:50:13,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 327.0869565217391) internal successors, (7523), 23 states have internal predecessors, (7523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:13,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:50:13,957 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:13,965 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e501e4c0-c0a9-4ff3-95bb-33c427b97442/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-26 11:50:14,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e501e4c0-c0a9-4ff3-95bb-33c427b97442/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-26 11:50:14,163 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-26 11:50:14,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:14,164 INFO L85 PathProgramCache]: Analyzing trace with hash -799764591, now seen corresponding path program 4 times [2023-11-26 11:50:14,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:14,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418796516] [2023-11-26 11:50:14,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:14,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:14,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:50:14,209 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:50:14,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:50:14,264 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:50:14,266 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 11:50:14,267 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2023-11-26 11:50:14,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2023-11-26 11:50:14,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2023-11-26 11:50:14,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2023-11-26 11:50:14,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2023-11-26 11:50:14,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2023-11-26 11:50:14,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2023-11-26 11:50:14,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2023-11-26 11:50:14,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2023-11-26 11:50:14,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2023-11-26 11:50:14,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2023-11-26 11:50:14,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2023-11-26 11:50:14,270 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2023-11-26 11:50:14,270 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2023-11-26 11:50:14,270 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2023-11-26 11:50:14,270 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2023-11-26 11:50:14,270 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2023-11-26 11:50:14,270 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2023-11-26 11:50:14,271 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2023-11-26 11:50:14,271 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2023-11-26 11:50:14,271 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2023-11-26 11:50:14,271 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2023-11-26 11:50:14,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-26 11:50:14,272 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1] [2023-11-26 11:50:14,272 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-26 11:50:14,273 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-26 11:50:14,357 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-26 11:50:14,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 463 places, 523 transitions, 1073 flow [2023-11-26 11:50:14,570 INFO L124 PetriNetUnfolderBase]: 127/1039 cut-off events. [2023-11-26 11:50:14,570 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-26 11:50:14,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1064 conditions, 1039 events. 127/1039 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 6306 event pairs, 1 based on Foata normal form. 0/865 useless extension candidates. Maximal degree in co-relation 717. Up to 16 conditions per place. [2023-11-26 11:50:14,588 INFO L82 GeneralOperation]: Start removeDead. Operand has 463 places, 523 transitions, 1073 flow [2023-11-26 11:50:14,603 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 463 places, 523 transitions, 1073 flow [2023-11-26 11:50:14,604 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:50:14,604 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;@1ad7692b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:50:14,605 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2023-11-26 11:50:14,610 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:50:14,610 INFO L124 PetriNetUnfolderBase]: 7/89 cut-off events. [2023-11-26 11:50:14,611 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:50:14,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:50:14,611 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] [2023-11-26 11:50:14,611 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-26 11:50:14,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:14,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1689608770, now seen corresponding path program 1 times [2023-11-26 11:50:14,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:14,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775388661] [2023-11-26 11:50:14,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:14,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:14,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:14,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:14,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:14,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775388661] [2023-11-26 11:50:14,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775388661] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:14,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:14,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:50:14,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231822983] [2023-11-26 11:50:14,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:14,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:50:14,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:14,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:50:14,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:50:14,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 420 out of 523 [2023-11-26 11:50:14,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 523 transitions, 1073 flow. Second operand has 3 states, 3 states have (on average 421.3333333333333) internal successors, (1264), 3 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:14,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:50:14,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 420 of 523 [2023-11-26 11:50:14,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand