./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_17-arrayloop_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version e7bb482b 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_aa77b1be-821e-451f-96e7-94b3f5188f47/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa77b1be-821e-451f-96e7-94b3f5188f47/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa77b1be-821e-451f-96e7-94b3f5188f47/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa77b1be-821e-451f-96e7-94b3f5188f47/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_17-arrayloop_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa77b1be-821e-451f-96e7-94b3f5188f47/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa77b1be-821e-451f-96e7-94b3f5188f47/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 b29c7049a333b10d890b8afae901738020ed1f084c2a7d471b316f0abdba3430 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:43:35,025 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:43:35,103 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa77b1be-821e-451f-96e7-94b3f5188f47/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-06 22:43:35,110 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:43:35,111 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:43:35,141 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:43:35,142 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:43:35,143 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:43:35,144 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:43:35,145 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:43:35,146 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:43:35,146 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:43:35,147 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:43:35,148 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:43:35,148 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:43:35,149 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:43:35,149 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:43:35,150 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:43:35,150 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:43:35,151 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:43:35,151 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:43:35,162 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:43:35,162 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-06 22:43:35,163 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:43:35,163 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:43:35,164 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:43:35,164 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:43:35,164 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:43:35,165 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:43:35,165 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:43:35,166 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:43:35,166 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:43:35,167 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:43:35,167 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:43:35,168 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:43:35,168 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:43:35,169 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:43:35,169 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:43:35,169 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:43:35,170 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:43:35,170 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:43:35,172 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_aa77b1be-821e-451f-96e7-94b3f5188f47/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa77b1be-821e-451f-96e7-94b3f5188f47/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b29c7049a333b10d890b8afae901738020ed1f084c2a7d471b316f0abdba3430 [2023-11-06 22:43:35,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:43:35,525 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:43:35,528 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:43:35,529 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:43:35,530 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:43:35,531 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa77b1be-821e-451f-96e7-94b3f5188f47/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/goblint-regression/09-regions_17-arrayloop_nr.i [2023-11-06 22:43:38,809 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:43:39,291 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:43:39,292 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa77b1be-821e-451f-96e7-94b3f5188f47/sv-benchmarks/c/goblint-regression/09-regions_17-arrayloop_nr.i [2023-11-06 22:43:39,326 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa77b1be-821e-451f-96e7-94b3f5188f47/bin/uautomizer-verify-WvqO1wxjHP/data/bccd25f60/e8bef8b39c734630bfa3a8adabae03bb/FLAG82408e87a [2023-11-06 22:43:39,349 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa77b1be-821e-451f-96e7-94b3f5188f47/bin/uautomizer-verify-WvqO1wxjHP/data/bccd25f60/e8bef8b39c734630bfa3a8adabae03bb [2023-11-06 22:43:39,355 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:43:39,357 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:43:39,358 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:43:39,359 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:43:39,367 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:43:39,371 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:43:39" (1/1) ... [2023-11-06 22:43:39,372 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32b4a868 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:39, skipping insertion in model container [2023-11-06 22:43:39,373 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:43:39" (1/1) ... [2023-11-06 22:43:39,468 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:43:40,357 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:43:40,380 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:43:40,505 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:43:40,617 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:43:40,617 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:40 WrapperNode [2023-11-06 22:43:40,618 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:43:40,619 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:43:40,619 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:43:40,619 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:43:40,629 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:40" (1/1) ... [2023-11-06 22:43:40,662 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:40" (1/1) ... [2023-11-06 22:43:40,727 INFO L138 Inliner]: procedures = 368, calls = 28, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 231 [2023-11-06 22:43:40,727 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:43:40,728 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:43:40,728 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:43:40,729 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:43:40,759 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:40" (1/1) ... [2023-11-06 22:43:40,760 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:40" (1/1) ... [2023-11-06 22:43:40,777 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:40" (1/1) ... [2023-11-06 22:43:40,778 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:40" (1/1) ... [2023-11-06 22:43:40,847 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:40" (1/1) ... [2023-11-06 22:43:40,852 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:40" (1/1) ... [2023-11-06 22:43:40,857 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:40" (1/1) ... [2023-11-06 22:43:40,861 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:40" (1/1) ... [2023-11-06 22:43:40,868 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:43:40,869 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:43:40,869 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:43:40,869 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:43:40,870 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:40" (1/1) ... [2023-11-06 22:43:40,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:43:40,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa77b1be-821e-451f-96e7-94b3f5188f47/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:43:40,979 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa77b1be-821e-451f-96e7-94b3f5188f47/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:43:41,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa77b1be-821e-451f-96e7-94b3f5188f47/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:43:41,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:43:41,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 22:43:41,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:43:41,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:43:41,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:43:41,080 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-06 22:43:41,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:43:41,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:43:41,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 22:43:41,082 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-06 22:43:41,082 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-06 22:43:41,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:43:41,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:43:41,085 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:43:41,305 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:43:41,308 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:43:42,069 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:43:42,090 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:43:42,090 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-06 22:43:42,095 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:43:42 BoogieIcfgContainer [2023-11-06 22:43:42,095 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:43:42,103 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:43:42,103 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:43:42,108 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:43:42,108 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:43:39" (1/3) ... [2023-11-06 22:43:42,110 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aaa043b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:43:42, skipping insertion in model container [2023-11-06 22:43:42,110 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:40" (2/3) ... [2023-11-06 22:43:42,112 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aaa043b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:43:42, skipping insertion in model container [2023-11-06 22:43:42,112 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:43:42" (3/3) ... [2023-11-06 22:43:42,114 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_17-arrayloop_nr.i [2023-11-06 22:43:42,127 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:43:42,140 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:43:42,141 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-11-06 22:43:42,141 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:43:42,275 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:43:42,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 263 places, 265 transitions, 534 flow [2023-11-06 22:43:42,514 INFO L124 PetriNetUnfolderBase]: 6/264 cut-off events. [2023-11-06 22:43:42,514 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:43:42,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 268 conditions, 264 events. 6/264 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 426 event pairs, 0 based on Foata normal form. 0/240 useless extension candidates. Maximal degree in co-relation 200. Up to 2 conditions per place. [2023-11-06 22:43:42,524 INFO L82 GeneralOperation]: Start removeDead. Operand has 263 places, 265 transitions, 534 flow [2023-11-06 22:43:42,534 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 262 places, 264 transitions, 531 flow [2023-11-06 22:43:42,538 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:43:42,549 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 262 places, 264 transitions, 531 flow [2023-11-06 22:43:42,552 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 262 places, 264 transitions, 531 flow [2023-11-06 22:43:42,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 262 places, 264 transitions, 531 flow [2023-11-06 22:43:42,652 INFO L124 PetriNetUnfolderBase]: 6/264 cut-off events. [2023-11-06 22:43:42,657 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:43:42,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 268 conditions, 264 events. 6/264 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 426 event pairs, 0 based on Foata normal form. 0/240 useless extension candidates. Maximal degree in co-relation 200. Up to 2 conditions per place. [2023-11-06 22:43:42,680 INFO L119 LiptonReduction]: Number of co-enabled transitions 19550 [2023-11-06 22:44:03,414 WARN L293 SmtUtils]: Spent 8.91s on a formula simplification that was a NOOP. DAG size: 142 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:44:14,089 INFO L134 LiptonReduction]: Checked pairs total: 98205 [2023-11-06 22:44:14,089 INFO L136 LiptonReduction]: Total number of compositions: 158 [2023-11-06 22:44:14,109 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:44:14,115 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=LoopsAndPotentialCycles, 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;@3ec8493f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:44:14,116 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-11-06 22:44:14,119 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:44:14,120 INFO L124 PetriNetUnfolderBase]: 1/3 cut-off events. [2023-11-06 22:44:14,120 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:44:14,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:44:14,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:44:14,122 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-06 22:44:14,128 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:14,128 INFO L85 PathProgramCache]: Analyzing trace with hash 26591, now seen corresponding path program 1 times [2023-11-06 22:44:14,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:14,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976794525] [2023-11-06 22:44:14,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:14,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:14,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:14,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:14,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:14,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976794525] [2023-11-06 22:44:14,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976794525] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:14,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:14,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:44:14,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974907416] [2023-11-06 22:44:14,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:14,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:44:14,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:14,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:44:14,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:44:14,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 423 [2023-11-06 22:44:14,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 122 transitions, 247 flow. Second operand has 2 states, 2 states have (on average 262.0) internal successors, (524), 2 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:14,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:44:14,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 423 [2023-11-06 22:44:14,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:44:14,945 INFO L124 PetriNetUnfolderBase]: 393/1743 cut-off events. [2023-11-06 22:44:14,945 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:44:14,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2534 conditions, 1743 events. 393/1743 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 11174 event pairs, 352 based on Foata normal form. 0/1656 useless extension candidates. Maximal degree in co-relation 2521. Up to 787 conditions per place. [2023-11-06 22:44:14,964 INFO L140 encePairwiseOnDemand]: 420/423 looper letters, 44 selfloop transitions, 0 changer transitions 0/119 dead transitions. [2023-11-06 22:44:14,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 119 transitions, 329 flow [2023-11-06 22:44:14,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:44:14,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:44:14,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 569 transitions. [2023-11-06 22:44:14,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6725768321513003 [2023-11-06 22:44:14,998 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 569 transitions. [2023-11-06 22:44:14,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 569 transitions. [2023-11-06 22:44:15,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:44:15,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 569 transitions. [2023-11-06 22:44:15,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 284.5) internal successors, (569), 2 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:15,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 423.0) internal successors, (1269), 3 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:15,026 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 423.0) internal successors, (1269), 3 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:15,030 INFO L175 Difference]: Start difference. First operand has 123 places, 122 transitions, 247 flow. Second operand 2 states and 569 transitions. [2023-11-06 22:44:15,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 119 transitions, 329 flow [2023-11-06 22:44:15,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 119 transitions, 328 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:44:15,041 INFO L231 Difference]: Finished difference. Result has 120 places, 119 transitions, 240 flow [2023-11-06 22:44:15,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=423, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=240, PETRI_PLACES=120, PETRI_TRANSITIONS=119} [2023-11-06 22:44:15,051 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, -3 predicate places. [2023-11-06 22:44:15,052 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 119 transitions, 240 flow [2023-11-06 22:44:15,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 262.0) internal successors, (524), 2 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:15,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:44:15,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:15,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:44:15,054 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-06 22:44:15,055 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:15,055 INFO L85 PathProgramCache]: Analyzing trace with hash -504281898, now seen corresponding path program 1 times [2023-11-06 22:44:15,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:15,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834926093] [2023-11-06 22:44:15,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:15,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:15,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:15,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:15,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:15,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834926093] [2023-11-06 22:44:15,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834926093] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:15,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:15,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:44:15,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542148970] [2023-11-06 22:44:15,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:15,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:44:15,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:15,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:44:15,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:44:15,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 423 [2023-11-06 22:44:15,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 119 transitions, 240 flow. Second operand has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:15,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:44:15,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 423 [2023-11-06 22:44:15,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:44:16,260 INFO L124 PetriNetUnfolderBase]: 750/3203 cut-off events. [2023-11-06 22:44:16,260 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:44:16,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4709 conditions, 3203 events. 750/3203 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 21485 event pairs, 540 based on Foata normal form. 0/3053 useless extension candidates. Maximal degree in co-relation 4706. Up to 787 conditions per place. [2023-11-06 22:44:16,286 INFO L140 encePairwiseOnDemand]: 417/423 looper letters, 79 selfloop transitions, 4 changer transitions 0/158 dead transitions. [2023-11-06 22:44:16,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 158 transitions, 484 flow [2023-11-06 22:44:16,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:44:16,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:44:16,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 841 transitions. [2023-11-06 22:44:16,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6627265563435776 [2023-11-06 22:44:16,292 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 841 transitions. [2023-11-06 22:44:16,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 841 transitions. [2023-11-06 22:44:16,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:44:16,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 841 transitions. [2023-11-06 22:44:16,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 280.3333333333333) internal successors, (841), 3 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:16,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 423.0) internal successors, (1692), 4 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:16,304 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 423.0) internal successors, (1692), 4 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:16,304 INFO L175 Difference]: Start difference. First operand has 120 places, 119 transitions, 240 flow. Second operand 3 states and 841 transitions. [2023-11-06 22:44:16,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 158 transitions, 484 flow [2023-11-06 22:44:16,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 158 transitions, 484 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:44:16,310 INFO L231 Difference]: Finished difference. Result has 123 places, 121 transitions, 264 flow [2023-11-06 22:44:16,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=423, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=264, PETRI_PLACES=123, PETRI_TRANSITIONS=121} [2023-11-06 22:44:16,312 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, 0 predicate places. [2023-11-06 22:44:16,312 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 121 transitions, 264 flow [2023-11-06 22:44:16,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:16,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:44:16,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:16,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:44:16,315 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-06 22:44:16,315 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:16,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1007286033, now seen corresponding path program 1 times [2023-11-06 22:44:16,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:16,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839475189] [2023-11-06 22:44:16,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:16,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:16,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:16,567 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:16,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:16,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839475189] [2023-11-06 22:44:16,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839475189] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:44:16,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798783109] [2023-11-06 22:44:16,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:16,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:16,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa77b1be-821e-451f-96e7-94b3f5188f47/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:16,574 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa77b1be-821e-451f-96e7-94b3f5188f47/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:16,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa77b1be-821e-451f-96e7-94b3f5188f47/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:44:16,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:16,823 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:44:16,830 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:16,883 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:16,883 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:44:16,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:16,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798783109] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:44:16,910 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:44:16,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-06 22:44:16,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383683888] [2023-11-06 22:44:16,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:44:16,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:44:16,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:16,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:44:16,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:44:17,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 423 [2023-11-06 22:44:17,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 121 transitions, 264 flow. Second operand has 7 states, 7 states have (on average 252.0) internal successors, (1764), 7 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:17,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:44:17,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 423 [2023-11-06 22:44:17,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:44:19,866 INFO L124 PetriNetUnfolderBase]: 1481/6198 cut-off events. [2023-11-06 22:44:19,867 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2023-11-06 22:44:19,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9298 conditions, 6198 events. 1481/6198 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 42616 event pairs, 240 based on Foata normal form. 51/6057 useless extension candidates. Maximal degree in co-relation 9293. Up to 732 conditions per place. [2023-11-06 22:44:19,918 INFO L140 encePairwiseOnDemand]: 416/423 looper letters, 169 selfloop transitions, 11 changer transitions 0/255 dead transitions. [2023-11-06 22:44:19,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 255 transitions, 902 flow [2023-11-06 22:44:19,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:44:19,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:44:19,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1686 transitions. [2023-11-06 22:44:19,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6643026004728132 [2023-11-06 22:44:19,926 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1686 transitions. [2023-11-06 22:44:19,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1686 transitions. [2023-11-06 22:44:19,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:44:19,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1686 transitions. [2023-11-06 22:44:19,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 281.0) internal successors, (1686), 6 states have internal predecessors, (1686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:19,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 423.0) internal successors, (2961), 7 states have internal predecessors, (2961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:19,949 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 423.0) internal successors, (2961), 7 states have internal predecessors, (2961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:19,950 INFO L175 Difference]: Start difference. First operand has 123 places, 121 transitions, 264 flow. Second operand 6 states and 1686 transitions. [2023-11-06 22:44:19,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 255 transitions, 902 flow [2023-11-06 22:44:19,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 255 transitions, 898 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:44:19,959 INFO L231 Difference]: Finished difference. Result has 131 places, 127 transitions, 338 flow [2023-11-06 22:44:19,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=423, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=338, PETRI_PLACES=131, PETRI_TRANSITIONS=127} [2023-11-06 22:44:19,962 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, 8 predicate places. [2023-11-06 22:44:19,962 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 127 transitions, 338 flow [2023-11-06 22:44:19,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 252.0) internal successors, (1764), 7 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:19,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:44:19,964 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:19,976 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa77b1be-821e-451f-96e7-94b3f5188f47/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-06 22:44:20,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa77b1be-821e-451f-96e7-94b3f5188f47/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:20,171 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-06 22:44:20,172 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:20,172 INFO L85 PathProgramCache]: Analyzing trace with hash 225071544, now seen corresponding path program 1 times [2023-11-06 22:44:20,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:20,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113463236] [2023-11-06 22:44:20,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:20,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:20,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:20,637 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:20,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:20,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113463236] [2023-11-06 22:44:20,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113463236] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:44:20,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010897325] [2023-11-06 22:44:20,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:20,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:20,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa77b1be-821e-451f-96e7-94b3f5188f47/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:20,641 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa77b1be-821e-451f-96e7-94b3f5188f47/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:20,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa77b1be-821e-451f-96e7-94b3f5188f47/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:44:20,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:20,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:44:20,930 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:20,952 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:20,952 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:44:21,040 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:21,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010897325] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:44:21,041 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:44:21,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-06 22:44:21,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045668227] [2023-11-06 22:44:21,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:44:21,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:44:21,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:21,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:44:21,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:44:21,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 423 [2023-11-06 22:44:21,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 127 transitions, 338 flow. Second operand has 13 states, 13 states have (on average 251.46153846153845) internal successors, (3269), 13 states have internal predecessors, (3269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:21,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:44:21,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 423 [2023-11-06 22:44:21,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:44:29,023 INFO L124 PetriNetUnfolderBase]: 3623/15078 cut-off events. [2023-11-06 22:44:29,023 INFO L125 PetriNetUnfolderBase]: For 876/876 co-relation queries the response was YES. [2023-11-06 22:44:29,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23294 conditions, 15078 events. 3623/15078 cut-off events. For 876/876 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 105451 event pairs, 240 based on Foata normal form. 108/14767 useless extension candidates. Maximal degree in co-relation 23286. Up to 732 conditions per place. [2023-11-06 22:44:29,153 INFO L140 encePairwiseOnDemand]: 416/423 looper letters, 391 selfloop transitions, 23 changer transitions 0/489 dead transitions. [2023-11-06 22:44:29,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 489 transitions, 1980 flow [2023-11-06 22:44:29,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:44:29,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:44:29,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3426 transitions. [2023-11-06 22:44:29,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6749408983451537 [2023-11-06 22:44:29,169 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3426 transitions. [2023-11-06 22:44:29,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3426 transitions. [2023-11-06 22:44:29,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:44:29,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3426 transitions. [2023-11-06 22:44:29,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 285.5) internal successors, (3426), 12 states have internal predecessors, (3426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:29,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 423.0) internal successors, (5499), 13 states have internal predecessors, (5499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:29,206 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 423.0) internal successors, (5499), 13 states have internal predecessors, (5499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:29,206 INFO L175 Difference]: Start difference. First operand has 131 places, 127 transitions, 338 flow. Second operand 12 states and 3426 transitions. [2023-11-06 22:44:29,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 489 transitions, 1980 flow [2023-11-06 22:44:29,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 489 transitions, 1952 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-11-06 22:44:29,226 INFO L231 Difference]: Finished difference. Result has 148 places, 140 transitions, 504 flow [2023-11-06 22:44:29,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=423, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=504, PETRI_PLACES=148, PETRI_TRANSITIONS=140} [2023-11-06 22:44:29,228 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, 25 predicate places. [2023-11-06 22:44:29,228 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 140 transitions, 504 flow [2023-11-06 22:44:29,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 251.46153846153845) internal successors, (3269), 13 states have internal predecessors, (3269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:29,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:44:29,231 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:29,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa77b1be-821e-451f-96e7-94b3f5188f47/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:44:29,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa77b1be-821e-451f-96e7-94b3f5188f47/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:29,447 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-06 22:44:29,447 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:29,447 INFO L85 PathProgramCache]: Analyzing trace with hash -265154600, now seen corresponding path program 2 times [2023-11-06 22:44:29,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:29,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627452179] [2023-11-06 22:44:29,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:29,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:29,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:31,209 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 22:44:31,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:31,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627452179] [2023-11-06 22:44:31,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627452179] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:31,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:31,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:44:31,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512076564] [2023-11-06 22:44:31,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:31,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:44:31,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:31,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:44:31,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:44:31,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 423 [2023-11-06 22:44:31,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 140 transitions, 504 flow. Second operand has 6 states, 6 states have (on average 188.16666666666666) internal successors, (1129), 6 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:31,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:44:31,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 423 [2023-11-06 22:44:31,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:44:50,950 INFO L124 PetriNetUnfolderBase]: 21697/47852 cut-off events. [2023-11-06 22:44:50,950 INFO L125 PetriNetUnfolderBase]: For 3882/3882 co-relation queries the response was YES. [2023-11-06 22:44:51,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94341 conditions, 47852 events. 21697/47852 cut-off events. For 3882/3882 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 310947 event pairs, 16798 based on Foata normal form. 0/46373 useless extension candidates. Maximal degree in co-relation 94326. Up to 40501 conditions per place. [2023-11-06 22:44:51,313 INFO L140 encePairwiseOnDemand]: 381/423 looper letters, 240 selfloop transitions, 149 changer transitions 0/412 dead transitions. [2023-11-06 22:44:51,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 412 transitions, 2290 flow [2023-11-06 22:44:51,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:44:51,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:44:51,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1441 transitions. [2023-11-06 22:44:51,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5677698975571316 [2023-11-06 22:44:51,321 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1441 transitions. [2023-11-06 22:44:51,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1441 transitions. [2023-11-06 22:44:51,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:44:51,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1441 transitions. [2023-11-06 22:44:51,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 240.16666666666666) internal successors, (1441), 6 states have internal predecessors, (1441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:51,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 423.0) internal successors, (2961), 7 states have internal predecessors, (2961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:51,337 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 423.0) internal successors, (2961), 7 states have internal predecessors, (2961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:51,337 INFO L175 Difference]: Start difference. First operand has 148 places, 140 transitions, 504 flow. Second operand 6 states and 1441 transitions. [2023-11-06 22:44:51,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 412 transitions, 2290 flow [2023-11-06 22:44:51,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 412 transitions, 2240 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-11-06 22:44:51,373 INFO L231 Difference]: Finished difference. Result has 154 places, 288 transitions, 1306 flow [2023-11-06 22:44:51,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=423, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1306, PETRI_PLACES=154, PETRI_TRANSITIONS=288} [2023-11-06 22:44:51,377 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, 31 predicate places. [2023-11-06 22:44:51,377 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 288 transitions, 1306 flow [2023-11-06 22:44:51,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 188.16666666666666) internal successors, (1129), 6 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:51,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:44:51,379 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:51,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:44:51,379 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-06 22:44:51,379 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:51,380 INFO L85 PathProgramCache]: Analyzing trace with hash -563005002, now seen corresponding path program 2 times [2023-11-06 22:44:51,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:51,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861274046] [2023-11-06 22:44:51,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:51,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:51,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:53,198 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 22:44:53,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:53,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861274046] [2023-11-06 22:44:53,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861274046] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:53,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:53,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:44:53,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231405504] [2023-11-06 22:44:53,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:53,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:44:53,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:53,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:44:53,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:44:53,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 423 [2023-11-06 22:44:53,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 288 transitions, 1306 flow. Second operand has 6 states, 6 states have (on average 185.16666666666666) internal successors, (1111), 6 states have internal predecessors, (1111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:53,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:44:53,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 423 [2023-11-06 22:44:53,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:45:14,829 INFO L124 PetriNetUnfolderBase]: 23757/53681 cut-off events. [2023-11-06 22:45:14,829 INFO L125 PetriNetUnfolderBase]: For 10340/10878 co-relation queries the response was YES. [2023-11-06 22:45:15,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129403 conditions, 53681 events. 23757/53681 cut-off events. For 10340/10878 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 352540 event pairs, 16642 based on Foata normal form. 0/52238 useless extension candidates. Maximal degree in co-relation 129383. Up to 45113 conditions per place. [2023-11-06 22:45:15,667 INFO L140 encePairwiseOnDemand]: 393/423 looper letters, 304 selfloop transitions, 105 changer transitions 0/448 dead transitions. [2023-11-06 22:45:15,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 448 transitions, 2494 flow [2023-11-06 22:45:15,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:45:15,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:45:15,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1355 transitions. [2023-11-06 22:45:15,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5338849487785658 [2023-11-06 22:45:15,675 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1355 transitions. [2023-11-06 22:45:15,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1355 transitions. [2023-11-06 22:45:15,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:45:15,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1355 transitions. [2023-11-06 22:45:15,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 225.83333333333334) internal successors, (1355), 6 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:15,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 423.0) internal successors, (2961), 7 states have internal predecessors, (2961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:15,686 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 423.0) internal successors, (2961), 7 states have internal predecessors, (2961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:15,687 INFO L175 Difference]: Start difference. First operand has 154 places, 288 transitions, 1306 flow. Second operand 6 states and 1355 transitions. [2023-11-06 22:45:15,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 448 transitions, 2494 flow [2023-11-06 22:45:15,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 448 transitions, 2494 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:45:15,899 INFO L231 Difference]: Finished difference. Result has 163 places, 388 transitions, 1924 flow [2023-11-06 22:45:15,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=423, PETRI_DIFFERENCE_MINUEND_FLOW=1306, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1924, PETRI_PLACES=163, PETRI_TRANSITIONS=388} [2023-11-06 22:45:15,903 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, 40 predicate places. [2023-11-06 22:45:15,903 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 388 transitions, 1924 flow [2023-11-06 22:45:15,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 185.16666666666666) internal successors, (1111), 6 states have internal predecessors, (1111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:15,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:45:15,905 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:45:15,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:45:15,905 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-06 22:45:15,905 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:45:15,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1906269861, now seen corresponding path program 1 times [2023-11-06 22:45:15,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:45:15,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258941399] [2023-11-06 22:45:15,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:45:15,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:45:16,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:17,279 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 22:45:17,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:45:17,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258941399] [2023-11-06 22:45:17,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258941399] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:45:17,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:45:17,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:45:17,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589138044] [2023-11-06 22:45:17,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:45:17,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:45:17,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:45:17,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:45:17,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:45:18,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 423 [2023-11-06 22:45:18,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 388 transitions, 1924 flow. Second operand has 9 states, 9 states have (on average 181.0) internal successors, (1629), 9 states have internal predecessors, (1629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:18,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:45:18,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 423 [2023-11-06 22:45:18,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand