./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_76-tricky_address3_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70979c3f-4aeb-486a-905f-6945f64f6f51/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70979c3f-4aeb-486a-905f-6945f64f6f51/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70979c3f-4aeb-486a-905f-6945f64f6f51/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70979c3f-4aeb-486a-905f-6945f64f6f51/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_76-tricky_address3_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70979c3f-4aeb-486a-905f-6945f64f6f51/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70979c3f-4aeb-486a-905f-6945f64f6f51/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 53e3b4cf7a6885129025777f14c3b33a959debd694827832fbe127376cb0a5f9 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:50:21,040 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:50:21,167 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70979c3f-4aeb-486a-905f-6945f64f6f51/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-19 07:50:21,178 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:50:21,178 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:50:21,235 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:50:21,238 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:50:21,239 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:50:21,240 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:50:21,245 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:50:21,246 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:50:21,247 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:50:21,248 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:50:21,250 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:50:21,251 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:50:21,251 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:50:21,252 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:50:21,252 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:50:21,253 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:50:21,253 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:50:21,254 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:50:21,254 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:50:21,255 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-19 07:50:21,255 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:50:21,256 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:50:21,256 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:50:21,257 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:50:21,258 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:50:21,258 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:50:21,259 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:50:21,260 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:50:21,261 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:50:21,261 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:50:21,262 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:50:21,262 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:50:21,262 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:50:21,262 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:50:21,263 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:50:21,263 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:50:21,263 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:50:21,264 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:50:21,264 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_70979c3f-4aeb-486a-905f-6945f64f6f51/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70979c3f-4aeb-486a-905f-6945f64f6f51/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53e3b4cf7a6885129025777f14c3b33a959debd694827832fbe127376cb0a5f9 [2023-11-19 07:50:21,645 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:50:21,678 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:50:21,681 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:50:21,683 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:50:21,683 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:50:21,685 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70979c3f-4aeb-486a-905f-6945f64f6f51/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/goblint-regression/28-race_reach_76-tricky_address3_racefree.i [2023-11-19 07:50:24,902 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:50:25,286 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:50:25,290 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70979c3f-4aeb-486a-905f-6945f64f6f51/sv-benchmarks/c/goblint-regression/28-race_reach_76-tricky_address3_racefree.i [2023-11-19 07:50:25,312 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70979c3f-4aeb-486a-905f-6945f64f6f51/bin/uautomizer-verify-uCwYo4JHxu/data/a712a8835/d31be36c9a5f43888d507802112db98c/FLAG0cf6b8bdd [2023-11-19 07:50:25,331 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70979c3f-4aeb-486a-905f-6945f64f6f51/bin/uautomizer-verify-uCwYo4JHxu/data/a712a8835/d31be36c9a5f43888d507802112db98c [2023-11-19 07:50:25,336 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:50:25,337 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:50:25,339 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:50:25,339 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:50:25,348 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:50:25,353 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:50:25" (1/1) ... [2023-11-19 07:50:25,354 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5027c657 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:25, skipping insertion in model container [2023-11-19 07:50:25,355 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:50:25" (1/1) ... [2023-11-19 07:50:25,430 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:50:26,220 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:50:26,257 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:50:26,372 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:50:26,453 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:50:26,454 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:26 WrapperNode [2023-11-19 07:50:26,454 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:50:26,456 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:50:26,457 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:50:26,457 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:50:26,468 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:26" (1/1) ... [2023-11-19 07:50:26,520 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:26" (1/1) ... [2023-11-19 07:50:26,577 INFO L138 Inliner]: procedures = 270, calls = 42, calls flagged for inlining = 7, calls inlined = 8, statements flattened = 264 [2023-11-19 07:50:26,578 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:50:26,579 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:50:26,579 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:50:26,579 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:50:26,591 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:26" (1/1) ... [2023-11-19 07:50:26,591 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:26" (1/1) ... [2023-11-19 07:50:26,598 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:26" (1/1) ... [2023-11-19 07:50:26,599 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:26" (1/1) ... [2023-11-19 07:50:26,621 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:26" (1/1) ... [2023-11-19 07:50:26,628 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:26" (1/1) ... [2023-11-19 07:50:26,632 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:26" (1/1) ... [2023-11-19 07:50:26,635 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:26" (1/1) ... [2023-11-19 07:50:26,640 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:50:26,641 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:50:26,642 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:50:26,642 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:50:26,643 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:26" (1/1) ... [2023-11-19 07:50:26,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:50:26,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70979c3f-4aeb-486a-905f-6945f64f6f51/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:26,691 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70979c3f-4aeb-486a-905f-6945f64f6f51/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:50:26,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70979c3f-4aeb-486a-905f-6945f64f6f51/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:50:26,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:50:26,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:50:26,741 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:50:26,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:50:26,742 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 07:50:26,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:50:26,742 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-19 07:50:26,743 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-19 07:50:26,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:50:26,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:50:26,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:50:26,746 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:50:26,945 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:50:26,947 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:50:27,610 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:50:27,636 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:50:27,636 INFO L302 CfgBuilder]: Removed 23 assume(true) statements. [2023-11-19 07:50:27,645 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:50:27 BoogieIcfgContainer [2023-11-19 07:50:27,645 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:50:27,648 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:50:27,648 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:50:27,652 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:50:27,653 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:50:25" (1/3) ... [2023-11-19 07:50:27,654 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27377a84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:50:27, skipping insertion in model container [2023-11-19 07:50:27,654 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:26" (2/3) ... [2023-11-19 07:50:27,654 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27377a84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:50:27, skipping insertion in model container [2023-11-19 07:50:27,654 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:50:27" (3/3) ... [2023-11-19 07:50:27,658 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_76-tricky_address3_racefree.i [2023-11-19 07:50:27,676 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:50:27,685 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:50:27,685 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-11-19 07:50:27,685 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:50:27,844 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-19 07:50:27,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 255 places, 285 transitions, 577 flow [2023-11-19 07:50:28,097 INFO L124 PetriNetUnfolderBase]: 48/404 cut-off events. [2023-11-19 07:50:28,098 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:50:28,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 409 conditions, 404 events. 48/404 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1650 event pairs, 0 based on Foata normal form. 0/336 useless extension candidates. Maximal degree in co-relation 237. Up to 8 conditions per place. [2023-11-19 07:50:28,109 INFO L82 GeneralOperation]: Start removeDead. Operand has 255 places, 285 transitions, 577 flow [2023-11-19 07:50:28,120 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 255 places, 285 transitions, 577 flow [2023-11-19 07:50:28,125 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:50:28,137 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 255 places, 285 transitions, 577 flow [2023-11-19 07:50:28,140 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 255 places, 285 transitions, 577 flow [2023-11-19 07:50:28,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 255 places, 285 transitions, 577 flow [2023-11-19 07:50:28,258 INFO L124 PetriNetUnfolderBase]: 48/404 cut-off events. [2023-11-19 07:50:28,258 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:50:28,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 409 conditions, 404 events. 48/404 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1650 event pairs, 0 based on Foata normal form. 0/336 useless extension candidates. Maximal degree in co-relation 237. Up to 8 conditions per place. [2023-11-19 07:50:28,289 INFO L119 LiptonReduction]: Number of co-enabled transitions 28250 [2023-11-19 07:50:32,909 INFO L134 LiptonReduction]: Checked pairs total: 103958 [2023-11-19 07:50:32,910 INFO L136 LiptonReduction]: Total number of compositions: 200 [2023-11-19 07:50:32,927 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:50:32,935 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;@1bbaca0c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:50:32,936 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-19 07:50:32,942 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:50:32,942 INFO L124 PetriNetUnfolderBase]: 5/29 cut-off events. [2023-11-19 07:50:32,942 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:50:32,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:50:32,943 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-19 07:50:32,944 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-11-19 07:50:32,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:32,950 INFO L85 PathProgramCache]: Analyzing trace with hash -670717845, now seen corresponding path program 1 times [2023-11-19 07:50:32,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:32,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296991223] [2023-11-19 07:50:32,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:32,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:33,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:33,300 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:50:33,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:33,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296991223] [2023-11-19 07:50:33,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296991223] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:33,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:33,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:50:33,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59230016] [2023-11-19 07:50:33,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:33,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:50:33,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:33,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:50:33,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:50:33,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 485 [2023-11-19 07:50:33,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 133 transitions, 273 flow. Second operand has 3 states, 3 states have (on average 247.66666666666666) internal successors, (743), 3 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:33,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:50:33,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 485 [2023-11-19 07:50:33,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:50:33,717 INFO L124 PetriNetUnfolderBase]: 399/1524 cut-off events. [2023-11-19 07:50:33,717 INFO L125 PetriNetUnfolderBase]: For 3/4 co-relation queries the response was YES. [2023-11-19 07:50:33,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2309 conditions, 1524 events. 399/1524 cut-off events. For 3/4 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 10688 event pairs, 357 based on Foata normal form. 199/1558 useless extension candidates. Maximal degree in co-relation 2212. Up to 779 conditions per place. [2023-11-19 07:50:33,730 INFO L140 encePairwiseOnDemand]: 460/485 looper letters, 43 selfloop transitions, 2 changer transitions 0/112 dead transitions. [2023-11-19 07:50:33,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 112 transitions, 321 flow [2023-11-19 07:50:33,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:50:33,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:50:33,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 806 transitions. [2023-11-19 07:50:33,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5539518900343643 [2023-11-19 07:50:33,756 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 806 transitions. [2023-11-19 07:50:33,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 806 transitions. [2023-11-19 07:50:33,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:50:33,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 806 transitions. [2023-11-19 07:50:33,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 268.6666666666667) internal successors, (806), 3 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:33,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 485.0) internal successors, (1940), 4 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:33,782 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 485.0) internal successors, (1940), 4 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:33,784 INFO L175 Difference]: Start difference. First operand has 110 places, 133 transitions, 273 flow. Second operand 3 states and 806 transitions. [2023-11-19 07:50:33,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 112 transitions, 321 flow [2023-11-19 07:50:33,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 112 transitions, 321 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:50:33,793 INFO L231 Difference]: Finished difference. Result has 113 places, 112 transitions, 241 flow [2023-11-19 07:50:33,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=485, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=241, PETRI_PLACES=113, PETRI_TRANSITIONS=112} [2023-11-19 07:50:33,801 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, 3 predicate places. [2023-11-19 07:50:33,802 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 112 transitions, 241 flow [2023-11-19 07:50:33,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 247.66666666666666) internal successors, (743), 3 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:33,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:50:33,803 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:33,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:50:33,804 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-11-19 07:50:33,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:33,804 INFO L85 PathProgramCache]: Analyzing trace with hash 309295352, now seen corresponding path program 1 times [2023-11-19 07:50:33,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:33,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502762938] [2023-11-19 07:50:33,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:33,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:33,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:33,956 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:50:33,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:33,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502762938] [2023-11-19 07:50:33,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502762938] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:50:33,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416987577] [2023-11-19 07:50:33,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:33,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:33,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70979c3f-4aeb-486a-905f-6945f64f6f51/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:33,961 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70979c3f-4aeb-486a-905f-6945f64f6f51/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:33,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70979c3f-4aeb-486a-905f-6945f64f6f51/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:50:34,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:34,088 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:50:34,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:34,126 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:50:34,126 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:50:34,145 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:50:34,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416987577] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:50:34,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:50:34,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-11-19 07:50:34,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855313852] [2023-11-19 07:50:34,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:50:34,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:50:34,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:34,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:50:34,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:50:34,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 485 [2023-11-19 07:50:34,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 112 transitions, 241 flow. Second operand has 6 states, 6 states have (on average 246.5) internal successors, (1479), 6 states have internal predecessors, (1479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:34,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:50:34,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 485 [2023-11-19 07:50:34,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:50:34,495 INFO L124 PetriNetUnfolderBase]: 399/1527 cut-off events. [2023-11-19 07:50:34,496 INFO L125 PetriNetUnfolderBase]: For 3/4 co-relation queries the response was YES. [2023-11-19 07:50:34,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2325 conditions, 1527 events. 399/1527 cut-off events. For 3/4 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 10702 event pairs, 357 based on Foata normal form. 0/1362 useless extension candidates. Maximal degree in co-relation 2313. Up to 779 conditions per place. [2023-11-19 07:50:34,509 INFO L140 encePairwiseOnDemand]: 482/485 looper letters, 43 selfloop transitions, 5 changer transitions 0/115 dead transitions. [2023-11-19 07:50:34,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 115 transitions, 349 flow [2023-11-19 07:50:34,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:50:34,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:50:34,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1521 transitions. [2023-11-19 07:50:34,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.522680412371134 [2023-11-19 07:50:34,517 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1521 transitions. [2023-11-19 07:50:34,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1521 transitions. [2023-11-19 07:50:34,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:50:34,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1521 transitions. [2023-11-19 07:50:34,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 253.5) internal successors, (1521), 6 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:34,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 485.0) internal successors, (3395), 7 states have internal predecessors, (3395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:34,535 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 485.0) internal successors, (3395), 7 states have internal predecessors, (3395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:34,536 INFO L175 Difference]: Start difference. First operand has 113 places, 112 transitions, 241 flow. Second operand 6 states and 1521 transitions. [2023-11-19 07:50:34,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 115 transitions, 349 flow [2023-11-19 07:50:34,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 115 transitions, 345 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-19 07:50:34,542 INFO L231 Difference]: Finished difference. Result has 120 places, 115 transitions, 273 flow [2023-11-19 07:50:34,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=485, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=273, PETRI_PLACES=120, PETRI_TRANSITIONS=115} [2023-11-19 07:50:34,544 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, 10 predicate places. [2023-11-19 07:50:34,544 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 115 transitions, 273 flow [2023-11-19 07:50:34,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 246.5) internal successors, (1479), 6 states have internal predecessors, (1479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:34,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:50:34,546 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-11-19 07:50:34,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70979c3f-4aeb-486a-905f-6945f64f6f51/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:50:34,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70979c3f-4aeb-486a-905f-6945f64f6f51/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:34,762 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)] === [2023-11-19 07:50:34,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:34,763 INFO L85 PathProgramCache]: Analyzing trace with hash 205251499, now seen corresponding path program 2 times [2023-11-19 07:50:34,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:34,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226170507] [2023-11-19 07:50:34,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:34,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:34,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:34,879 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:50:34,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:34,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226170507] [2023-11-19 07:50:34,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226170507] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:50:34,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195511270] [2023-11-19 07:50:34,881 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:50:34,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:34,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70979c3f-4aeb-486a-905f-6945f64f6f51/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:34,882 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70979c3f-4aeb-486a-905f-6945f64f6f51/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:34,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70979c3f-4aeb-486a-905f-6945f64f6f51/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:50:34,973 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:50:34,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:50:34,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:50:34,976 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:34,990 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:50:34,990 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:50:35,065 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:50:35,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195511270] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:50:35,066 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:50:35,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-11-19 07:50:35,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773920802] [2023-11-19 07:50:35,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:50:35,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:50:35,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:35,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:50:35,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:50:35,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 485 [2023-11-19 07:50:35,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 115 transitions, 273 flow. Second operand has 12 states, 12 states have (on average 246.25) internal successors, (2955), 12 states have internal predecessors, (2955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:35,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:50:35,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 485 [2023-11-19 07:50:35,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:50:35,464 INFO L124 PetriNetUnfolderBase]: 399/1533 cut-off events. [2023-11-19 07:50:35,464 INFO L125 PetriNetUnfolderBase]: For 23/24 co-relation queries the response was YES. [2023-11-19 07:50:35,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2362 conditions, 1533 events. 399/1533 cut-off events. For 23/24 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 10681 event pairs, 357 based on Foata normal form. 6/1375 useless extension candidates. Maximal degree in co-relation 2304. Up to 779 conditions per place. [2023-11-19 07:50:35,476 INFO L140 encePairwiseOnDemand]: 482/485 looper letters, 43 selfloop transitions, 11 changer transitions 0/121 dead transitions. [2023-11-19 07:50:35,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 121 transitions, 417 flow [2023-11-19 07:50:35,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:50:35,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-19 07:50:35,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3000 transitions. [2023-11-19 07:50:35,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5154639175257731 [2023-11-19 07:50:35,487 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3000 transitions. [2023-11-19 07:50:35,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3000 transitions. [2023-11-19 07:50:35,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:50:35,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3000 transitions. [2023-11-19 07:50:35,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 250.0) internal successors, (3000), 12 states have internal predecessors, (3000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:35,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 485.0) internal successors, (6305), 13 states have internal predecessors, (6305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:35,520 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 485.0) internal successors, (6305), 13 states have internal predecessors, (6305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:35,520 INFO L175 Difference]: Start difference. First operand has 120 places, 115 transitions, 273 flow. Second operand 12 states and 3000 transitions. [2023-11-19 07:50:35,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 121 transitions, 417 flow [2023-11-19 07:50:35,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 121 transitions, 403 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-19 07:50:35,529 INFO L231 Difference]: Finished difference. Result has 136 places, 121 transitions, 343 flow [2023-11-19 07:50:35,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=485, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=343, PETRI_PLACES=136, PETRI_TRANSITIONS=121} [2023-11-19 07:50:35,532 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, 26 predicate places. [2023-11-19 07:50:35,532 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 121 transitions, 343 flow [2023-11-19 07:50:35,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 246.25) internal successors, (2955), 12 states have internal predecessors, (2955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:35,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:50:35,535 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-11-19 07:50:35,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70979c3f-4aeb-486a-905f-6945f64f6f51/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:50:35,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70979c3f-4aeb-486a-905f-6945f64f6f51/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:35,757 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)] === [2023-11-19 07:50:35,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:35,757 INFO L85 PathProgramCache]: Analyzing trace with hash 566292619, now seen corresponding path program 3 times [2023-11-19 07:50:35,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:35,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558906449] [2023-11-19 07:50:35,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:35,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:35,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:50:35,820 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:50:35,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:50:35,906 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:50:35,906 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:50:35,907 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-11-19 07:50:35,910 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2023-11-19 07:50:35,910 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2023-11-19 07:50:35,911 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2023-11-19 07:50:35,911 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2023-11-19 07:50:35,911 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2023-11-19 07:50:35,911 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2023-11-19 07:50:35,912 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2023-11-19 07:50:35,912 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2023-11-19 07:50:35,912 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2023-11-19 07:50:35,912 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2023-11-19 07:50:35,913 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2023-11-19 07:50:35,913 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2023-11-19 07:50:35,913 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2023-11-19 07:50:35,914 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2023-11-19 07:50:35,914 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2023-11-19 07:50:35,914 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2023-11-19 07:50:35,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:50:35,915 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2023-11-19 07:50:35,918 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:50:35,918 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 07:50:36,024 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 07:50:36,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 357 places, 400 transitions, 816 flow [2023-11-19 07:50:36,191 INFO L124 PetriNetUnfolderBase]: 80/670 cut-off events. [2023-11-19 07:50:36,192 INFO L125 PetriNetUnfolderBase]: For 6/7 co-relation queries the response was YES. [2023-11-19 07:50:36,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 682 conditions, 670 events. 80/670 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3383 event pairs, 0 based on Foata normal form. 0/557 useless extension candidates. Maximal degree in co-relation 406. Up to 12 conditions per place. [2023-11-19 07:50:36,207 INFO L82 GeneralOperation]: Start removeDead. Operand has 357 places, 400 transitions, 816 flow [2023-11-19 07:50:36,221 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 357 places, 400 transitions, 816 flow [2023-11-19 07:50:36,223 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:50:36,223 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 357 places, 400 transitions, 816 flow [2023-11-19 07:50:36,223 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 357 places, 400 transitions, 816 flow [2023-11-19 07:50:36,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 357 places, 400 transitions, 816 flow [2023-11-19 07:50:36,424 INFO L124 PetriNetUnfolderBase]: 80/670 cut-off events. [2023-11-19 07:50:36,424 INFO L125 PetriNetUnfolderBase]: For 6/7 co-relation queries the response was YES. [2023-11-19 07:50:36,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 682 conditions, 670 events. 80/670 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3383 event pairs, 0 based on Foata normal form. 0/557 useless extension candidates. Maximal degree in co-relation 406. Up to 12 conditions per place. [2023-11-19 07:50:36,484 INFO L119 LiptonReduction]: Number of co-enabled transitions 84524 [2023-11-19 07:50:41,763 INFO L134 LiptonReduction]: Checked pairs total: 311707 [2023-11-19 07:50:41,763 INFO L136 LiptonReduction]: Total number of compositions: 279 [2023-11-19 07:50:41,766 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:50:41,769 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;@1bbaca0c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:50:41,769 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-11-19 07:50:41,780 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:50:41,780 INFO L124 PetriNetUnfolderBase]: 17/78 cut-off events. [2023-11-19 07:50:41,780 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:50:41,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:50:41,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:41,783 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)] === [2023-11-19 07:50:41,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:41,783 INFO L85 PathProgramCache]: Analyzing trace with hash -16498644, now seen corresponding path program 1 times [2023-11-19 07:50:41,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:41,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993193890] [2023-11-19 07:50:41,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:41,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:41,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:41,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:41,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:41,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993193890] [2023-11-19 07:50:41,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993193890] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:41,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:41,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:50:41,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540948561] [2023-11-19 07:50:41,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:41,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:50:41,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:41,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:50:41,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:50:41,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 345 out of 679 [2023-11-19 07:50:41,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 195 transitions, 406 flow. Second operand has 3 states, 3 states have (on average 346.6666666666667) internal successors, (1040), 3 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:41,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:50:41,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 345 of 679 [2023-11-19 07:50:41,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:50:47,411 INFO L124 PetriNetUnfolderBase]: 14691/34818 cut-off events. [2023-11-19 07:50:47,411 INFO L125 PetriNetUnfolderBase]: For 176/224 co-relation queries the response was YES. [2023-11-19 07:50:47,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56175 conditions, 34818 events. 14691/34818 cut-off events. For 176/224 co-relation queries the response was YES. Maximal size of possible extension queue 889. Compared 376800 event pairs, 13600 based on Foata normal form. 5665/37253 useless extension candidates. Maximal degree in co-relation 20590. Up to 21259 conditions per place. [2023-11-19 07:50:48,007 INFO L140 encePairwiseOnDemand]: 643/679 looper letters, 62 selfloop transitions, 2 changer transitions 0/163 dead transitions. [2023-11-19 07:50:48,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 163 transitions, 470 flow [2023-11-19 07:50:48,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:50:48,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:50:48,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1133 transitions. [2023-11-19 07:50:48,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5562101129111439 [2023-11-19 07:50:48,019 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1133 transitions. [2023-11-19 07:50:48,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1133 transitions. [2023-11-19 07:50:48,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:50:48,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1133 transitions. [2023-11-19 07:50:48,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 377.6666666666667) internal successors, (1133), 3 states have internal predecessors, (1133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:48,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 679.0) internal successors, (2716), 4 states have internal predecessors, (2716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:48,048 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 679.0) internal successors, (2716), 4 states have internal predecessors, (2716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:48,049 INFO L175 Difference]: Start difference. First operand has 161 places, 195 transitions, 406 flow. Second operand 3 states and 1133 transitions. [2023-11-19 07:50:48,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 163 transitions, 470 flow [2023-11-19 07:50:48,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 163 transitions, 470 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:50:48,055 INFO L231 Difference]: Finished difference. Result has 164 places, 163 transitions, 352 flow [2023-11-19 07:50:48,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=679, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=352, PETRI_PLACES=164, PETRI_TRANSITIONS=163} [2023-11-19 07:50:48,071 INFO L281 CegarLoopForPetriNet]: 161 programPoint places, 3 predicate places. [2023-11-19 07:50:48,071 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 163 transitions, 352 flow [2023-11-19 07:50:48,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 346.6666666666667) internal successors, (1040), 3 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:48,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:50:48,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:48,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:50:48,073 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-19 07:50:48,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:48,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1265829862, now seen corresponding path program 1 times [2023-11-19 07:50:48,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:48,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576603703] [2023-11-19 07:50:48,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:48,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:48,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:48,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:48,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:48,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576603703] [2023-11-19 07:50:48,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576603703] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:50:48,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132860993] [2023-11-19 07:50:48,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:48,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:48,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70979c3f-4aeb-486a-905f-6945f64f6f51/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:48,151 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70979c3f-4aeb-486a-905f-6945f64f6f51/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:48,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70979c3f-4aeb-486a-905f-6945f64f6f51/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:50:48,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:48,258 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:50:48,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:48,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:50:48,271 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:50:48,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132860993] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:48,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:50:48,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-11-19 07:50:48,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737403876] [2023-11-19 07:50:48,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:48,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:50:48,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:48,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:50:48,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:50:48,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 345 out of 679 [2023-11-19 07:50:48,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 163 transitions, 352 flow. Second operand has 3 states, 3 states have (on average 347.0) internal successors, (1041), 3 states have internal predecessors, (1041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:48,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:50:48,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 345 of 679 [2023-11-19 07:50:48,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:50:52,122 INFO L124 PetriNetUnfolderBase]: 14723/34987 cut-off events. [2023-11-19 07:50:52,122 INFO L125 PetriNetUnfolderBase]: For 158/173 co-relation queries the response was YES. [2023-11-19 07:50:52,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56334 conditions, 34987 events. 14723/34987 cut-off events. For 158/173 co-relation queries the response was YES. Maximal size of possible extension queue 896. Compared 380333 event pairs, 11915 based on Foata normal form. 0/31715 useless extension candidates. Maximal degree in co-relation 56321. Up to 21223 conditions per place. [2023-11-19 07:50:52,375 INFO L140 encePairwiseOnDemand]: 676/679 looper letters, 81 selfloop transitions, 2 changer transitions 0/182 dead transitions. [2023-11-19 07:50:52,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 182 transitions, 556 flow [2023-11-19 07:50:52,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:50:52,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:50:52,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1118 transitions. [2023-11-19 07:50:52,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5488463426607757 [2023-11-19 07:50:52,380 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1118 transitions. [2023-11-19 07:50:52,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1118 transitions. [2023-11-19 07:50:52,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:50:52,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1118 transitions. [2023-11-19 07:50:52,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 372.6666666666667) internal successors, (1118), 3 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:52,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 679.0) internal successors, (2716), 4 states have internal predecessors, (2716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:52,394 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 679.0) internal successors, (2716), 4 states have internal predecessors, (2716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:52,394 INFO L175 Difference]: Start difference. First operand has 164 places, 163 transitions, 352 flow. Second operand 3 states and 1118 transitions. [2023-11-19 07:50:52,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 182 transitions, 556 flow [2023-11-19 07:50:52,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 182 transitions, 552 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-19 07:50:52,404 INFO L231 Difference]: Finished difference. Result has 166 places, 164 transitions, 360 flow [2023-11-19 07:50:52,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=679, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=360, PETRI_PLACES=166, PETRI_TRANSITIONS=164} [2023-11-19 07:50:52,408 INFO L281 CegarLoopForPetriNet]: 161 programPoint places, 5 predicate places. [2023-11-19 07:50:52,409 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 164 transitions, 360 flow [2023-11-19 07:50:52,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 347.0) internal successors, (1041), 3 states have internal predecessors, (1041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:52,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:50:52,410 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:52,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70979c3f-4aeb-486a-905f-6945f64f6f51/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:50:52,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70979c3f-4aeb-486a-905f-6945f64f6f51/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:52,623 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-19 07:50:52,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:52,626 INFO L85 PathProgramCache]: Analyzing trace with hash 88466720, now seen corresponding path program 1 times [2023-11-19 07:50:52,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:52,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859083369] [2023-11-19 07:50:52,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:52,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:52,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:52,707 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 07:50:52,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:52,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859083369] [2023-11-19 07:50:52,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859083369] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:50:52,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683602225] [2023-11-19 07:50:52,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:52,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:52,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70979c3f-4aeb-486a-905f-6945f64f6f51/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:52,712 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70979c3f-4aeb-486a-905f-6945f64f6f51/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:52,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70979c3f-4aeb-486a-905f-6945f64f6f51/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:50:52,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:52,811 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:50:52,813 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:52,823 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 07:50:52,824 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:50:52,841 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 07:50:52,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683602225] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:50:52,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:50:52,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-19 07:50:52,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464362363] [2023-11-19 07:50:52,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:50:52,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:50:52,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:52,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:50:52,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:50:52,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 344 out of 679 [2023-11-19 07:50:52,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 164 transitions, 360 flow. Second operand has 7 states, 7 states have (on average 345.7142857142857) internal successors, (2420), 7 states have internal predecessors, (2420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:52,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:50:52,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 344 of 679 [2023-11-19 07:50:52,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:50:57,045 INFO L124 PetriNetUnfolderBase]: 14723/34964 cut-off events. [2023-11-19 07:50:57,045 INFO L125 PetriNetUnfolderBase]: For 855/870 co-relation queries the response was YES. [2023-11-19 07:50:57,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57019 conditions, 34964 events. 14723/34964 cut-off events. For 855/870 co-relation queries the response was YES. Maximal size of possible extension queue 895. Compared 379442 event pairs, 13600 based on Foata normal form. 3/31995 useless extension candidates. Maximal degree in co-relation 56991. Up to 21242 conditions per place. [2023-11-19 07:50:57,318 INFO L140 encePairwiseOnDemand]: 676/679 looper letters, 63 selfloop transitions, 5 changer transitions 0/167 dead transitions. [2023-11-19 07:50:57,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 167 transitions, 508 flow [2023-11-19 07:50:57,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:50:57,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:50:57,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2134 transitions. [2023-11-19 07:50:57,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2023-11-19 07:50:57,328 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2134 transitions. [2023-11-19 07:50:57,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2134 transitions. [2023-11-19 07:50:57,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:50:57,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2134 transitions. [2023-11-19 07:50:57,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 355.6666666666667) internal successors, (2134), 6 states have internal predecessors, (2134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:57,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 679.0) internal successors, (4753), 7 states have internal predecessors, (4753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:57,347 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 679.0) internal successors, (4753), 7 states have internal predecessors, (4753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:57,347 INFO L175 Difference]: Start difference. First operand has 166 places, 164 transitions, 360 flow. Second operand 6 states and 2134 transitions. [2023-11-19 07:50:57,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 167 transitions, 508 flow [2023-11-19 07:50:57,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 167 transitions, 506 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:50:57,352 INFO L231 Difference]: Finished difference. Result has 173 places, 167 transitions, 394 flow [2023-11-19 07:50:57,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=679, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=394, PETRI_PLACES=173, PETRI_TRANSITIONS=167} [2023-11-19 07:50:57,355 INFO L281 CegarLoopForPetriNet]: 161 programPoint places, 12 predicate places. [2023-11-19 07:50:57,355 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 167 transitions, 394 flow [2023-11-19 07:50:57,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 345.7142857142857) internal successors, (2420), 7 states have internal predecessors, (2420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:57,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:50:57,357 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1] [2023-11-19 07:50:57,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70979c3f-4aeb-486a-905f-6945f64f6f51/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:50:57,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70979c3f-4aeb-486a-905f-6945f64f6f51/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:57,574 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)] === [2023-11-19 07:50:57,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:57,574 INFO L85 PathProgramCache]: Analyzing trace with hash 189743575, now seen corresponding path program 2 times [2023-11-19 07:50:57,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:57,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137058721] [2023-11-19 07:50:57,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:57,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:57,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:57,684 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 07:50:57,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:57,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137058721] [2023-11-19 07:50:57,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137058721] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:50:57,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229723293] [2023-11-19 07:50:57,685 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:50:57,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:57,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70979c3f-4aeb-486a-905f-6945f64f6f51/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:57,686 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70979c3f-4aeb-486a-905f-6945f64f6f51/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:57,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70979c3f-4aeb-486a-905f-6945f64f6f51/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:50:57,792 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:50:57,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:50:57,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:50:57,796 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:57,812 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 07:50:57,812 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:50:57,864 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 07:50:57,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229723293] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:50:57,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:50:57,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-19 07:50:57,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329528104] [2023-11-19 07:50:57,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:50:57,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 07:50:57,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:57,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 07:50:57,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:50:57,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 344 out of 679 [2023-11-19 07:50:57,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 167 transitions, 394 flow. Second operand has 13 states, 13 states have (on average 345.38461538461536) internal successors, (4490), 13 states have internal predecessors, (4490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:57,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:50:57,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 344 of 679 [2023-11-19 07:50:57,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:51:01,936 INFO L124 PetriNetUnfolderBase]: 14723/34970 cut-off events. [2023-11-19 07:51:01,938 INFO L125 PetriNetUnfolderBase]: For 889/904 co-relation queries the response was YES. [2023-11-19 07:51:02,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57040 conditions, 34970 events. 14723/34970 cut-off events. For 889/904 co-relation queries the response was YES. Maximal size of possible extension queue 895. Compared 379272 event pairs, 13600 based on Foata normal form. 6/32004 useless extension candidates. Maximal degree in co-relation 56980. Up to 21242 conditions per place. [2023-11-19 07:51:02,205 INFO L140 encePairwiseOnDemand]: 676/679 looper letters, 63 selfloop transitions, 11 changer transitions 0/173 dead transitions. [2023-11-19 07:51:02,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 173 transitions, 578 flow [2023-11-19 07:51:02,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:51:02,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-19 07:51:02,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4207 transitions. [2023-11-19 07:51:02,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5163230240549829 [2023-11-19 07:51:02,228 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 4207 transitions. [2023-11-19 07:51:02,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 4207 transitions. [2023-11-19 07:51:02,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:51:02,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 4207 transitions. [2023-11-19 07:51:02,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 350.5833333333333) internal successors, (4207), 12 states have internal predecessors, (4207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:51:02,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 679.0) internal successors, (8827), 13 states have internal predecessors, (8827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:51:02,284 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 679.0) internal successors, (8827), 13 states have internal predecessors, (8827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:51:02,285 INFO L175 Difference]: Start difference. First operand has 173 places, 167 transitions, 394 flow. Second operand 12 states and 4207 transitions. [2023-11-19 07:51:02,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 173 transitions, 578 flow [2023-11-19 07:51:02,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 173 transitions, 564 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-19 07:51:02,293 INFO L231 Difference]: Finished difference. Result has 189 places, 173 transitions, 464 flow [2023-11-19 07:51:02,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=679, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=464, PETRI_PLACES=189, PETRI_TRANSITIONS=173} [2023-11-19 07:51:02,295 INFO L281 CegarLoopForPetriNet]: 161 programPoint places, 28 predicate places. [2023-11-19 07:51:02,295 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 173 transitions, 464 flow [2023-11-19 07:51:02,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 345.38461538461536) internal successors, (4490), 13 states have internal predecessors, (4490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:51:02,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:51:02,299 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 2, 1, 1, 1, 1, 1] [2023-11-19 07:51:02,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70979c3f-4aeb-486a-905f-6945f64f6f51/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:51:02,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70979c3f-4aeb-486a-905f-6945f64f6f51/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-19 07:51:02,514 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)] === [2023-11-19 07:51:02,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:51:02,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1342943945, now seen corresponding path program 3 times [2023-11-19 07:51:02,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:51:02,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999523634] [2023-11-19 07:51:02,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:02,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:51:02,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:51:02,555 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:51:02,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:51:02,608 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:51:02,609 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:51:02,610 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2023-11-19 07:51:02,610 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2023-11-19 07:51:02,610 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2023-11-19 07:51:02,611 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2023-11-19 07:51:02,611 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2023-11-19 07:51:02,612 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2023-11-19 07:51:02,612 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2023-11-19 07:51:02,612 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2023-11-19 07:51:02,612 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2023-11-19 07:51:02,613 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2023-11-19 07:51:02,613 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2023-11-19 07:51:02,613 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2023-11-19 07:51:02,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2023-11-19 07:51:02,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2023-11-19 07:51:02,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2023-11-19 07:51:02,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2023-11-19 07:51:02,615 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2023-11-19 07:51:02,615 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2023-11-19 07:51:02,615 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2023-11-19 07:51:02,615 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2023-11-19 07:51:02,616 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2023-11-19 07:51:02,616 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2023-11-19 07:51:02,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:51:02,617 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2023-11-19 07:51:02,618 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:51:02,618 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-19 07:51:02,721 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-19 07:51:02,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 459 places, 515 transitions, 1057 flow [2023-11-19 07:51:03,086 INFO L124 PetriNetUnfolderBase]: 117/983 cut-off events. [2023-11-19 07:51:03,087 INFO L125 PetriNetUnfolderBase]: For 19/22 co-relation queries the response was YES. [2023-11-19 07:51:03,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1008 conditions, 983 events. 117/983 cut-off events. For 19/22 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 5509 event pairs, 1 based on Foata normal form. 0/819 useless extension candidates. Maximal degree in co-relation 678. Up to 16 conditions per place. [2023-11-19 07:51:03,116 INFO L82 GeneralOperation]: Start removeDead. Operand has 459 places, 515 transitions, 1057 flow [2023-11-19 07:51:03,132 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 459 places, 515 transitions, 1057 flow [2023-11-19 07:51:03,132 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:51:03,132 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 459 places, 515 transitions, 1057 flow [2023-11-19 07:51:03,133 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 459 places, 515 transitions, 1057 flow [2023-11-19 07:51:03,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 459 places, 515 transitions, 1057 flow [2023-11-19 07:51:03,401 INFO L124 PetriNetUnfolderBase]: 117/983 cut-off events. [2023-11-19 07:51:03,401 INFO L125 PetriNetUnfolderBase]: For 19/22 co-relation queries the response was YES. [2023-11-19 07:51:03,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1008 conditions, 983 events. 117/983 cut-off events. For 19/22 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 5509 event pairs, 1 based on Foata normal form. 0/819 useless extension candidates. Maximal degree in co-relation 678. Up to 16 conditions per place. [2023-11-19 07:51:03,527 INFO L119 LiptonReduction]: Number of co-enabled transitions 166110 [2023-11-19 07:51:09,650 INFO L134 LiptonReduction]: Checked pairs total: 616785 [2023-11-19 07:51:09,651 INFO L136 LiptonReduction]: Total number of compositions: 355 [2023-11-19 07:51:09,656 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:51:09,657 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;@1bbaca0c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:51:09,657 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2023-11-19 07:51:09,664 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:51:09,664 INFO L124 PetriNetUnfolderBase]: 14/73 cut-off events. [2023-11-19 07:51:09,664 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:51:09,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:51:09,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:51:09,665 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)] === [2023-11-19 07:51:09,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:51:09,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1067927383, now seen corresponding path program 1 times [2023-11-19 07:51:09,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:51:09,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241697674] [2023-11-19 07:51:09,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:09,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:51:09,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:09,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:51:09,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:51:09,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241697674] [2023-11-19 07:51:09,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241697674] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:51:09,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:51:09,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:51:09,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712351371] [2023-11-19 07:51:09,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:51:09,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:51:09,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:51:09,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:51:09,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:51:09,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 444 out of 870 [2023-11-19 07:51:09,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 255 transitions, 537 flow. Second operand has 3 states, 3 states have (on average 445.6666666666667) internal successors, (1337), 3 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:51:09,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:51:09,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 444 of 870 [2023-11-19 07:51:09,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand