./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c5307a-528b-4ea4-a405-e29ab9c01c3b/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c5307a-528b-4ea4-a405-e29ab9c01c3b/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c5307a-528b-4ea4-a405-e29ab9c01c3b/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c5307a-528b-4ea4-a405-e29ab9c01c3b/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c5307a-528b-4ea4-a405-e29ab9c01c3b/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c5307a-528b-4ea4-a405-e29ab9c01c3b/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3de6ec2acea23c0ab47fbc2e02ad0931145060ca78b80531ef692b3505f9553b --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:50:10,285 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:50:10,420 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c5307a-528b-4ea4-a405-e29ab9c01c3b/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-26 10:50:10,428 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:50:10,431 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:50:10,472 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:50:10,473 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:50:10,474 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:50:10,477 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:50:10,482 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:50:10,484 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:50:10,484 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:50:10,485 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:50:10,487 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:50:10,488 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:50:10,488 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:50:10,489 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:50:10,489 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:50:10,490 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:50:10,490 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:50:10,491 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:50:10,491 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:50:10,492 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-26 10:50:10,493 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 10:50:10,493 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:50:10,494 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:50:10,494 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:50:10,495 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:50:10,496 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:50:10,496 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:50:10,498 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:50:10,498 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:50:10,499 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:50:10,499 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:50:10,499 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:50:10,500 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:50:10,500 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:50:10,500 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:50:10,501 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:50:10,501 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:50:10,501 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:50:10,502 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_87c5307a-528b-4ea4-a405-e29ab9c01c3b/bin/uautomizer-verify-VRDe98Ueme/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c5307a-528b-4ea4-a405-e29ab9c01c3b/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3de6ec2acea23c0ab47fbc2e02ad0931145060ca78b80531ef692b3505f9553b [2023-11-26 10:50:10,820 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:50:10,848 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:50:10,851 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:50:10,852 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:50:10,853 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:50:10,854 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c5307a-528b-4ea4-a405-e29ab9c01c3b/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i [2023-11-26 10:50:13,973 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:50:14,376 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:50:14,377 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c5307a-528b-4ea4-a405-e29ab9c01c3b/sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i [2023-11-26 10:50:14,399 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c5307a-528b-4ea4-a405-e29ab9c01c3b/bin/uautomizer-verify-VRDe98Ueme/data/40413ed70/f7b9984c22d441d08ae83cf76d80da2f/FLAG974d03927 [2023-11-26 10:50:14,416 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c5307a-528b-4ea4-a405-e29ab9c01c3b/bin/uautomizer-verify-VRDe98Ueme/data/40413ed70/f7b9984c22d441d08ae83cf76d80da2f [2023-11-26 10:50:14,419 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:50:14,421 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:50:14,422 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:50:14,423 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:50:14,433 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:50:14,434 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:50:14" (1/1) ... [2023-11-26 10:50:14,435 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d2c52de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:50:14, skipping insertion in model container [2023-11-26 10:50:14,436 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:50:14" (1/1) ... [2023-11-26 10:50:14,496 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:50:15,066 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:50:15,081 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:50:15,153 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:50:15,249 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:50:15,250 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:50:15 WrapperNode [2023-11-26 10:50:15,250 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:50:15,252 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:50:15,252 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:50:15,252 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:50:15,262 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:50:15" (1/1) ... [2023-11-26 10:50:15,286 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:50:15" (1/1) ... [2023-11-26 10:50:15,340 INFO L138 Inliner]: procedures = 279, calls = 60, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 333 [2023-11-26 10:50:15,341 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:50:15,342 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:50:15,342 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:50:15,342 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:50:15,364 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:50:15" (1/1) ... [2023-11-26 10:50:15,365 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:50:15" (1/1) ... [2023-11-26 10:50:15,373 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:50:15" (1/1) ... [2023-11-26 10:50:15,376 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:50:15" (1/1) ... [2023-11-26 10:50:15,420 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:50:15" (1/1) ... [2023-11-26 10:50:15,432 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:50:15" (1/1) ... [2023-11-26 10:50:15,436 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:50:15" (1/1) ... [2023-11-26 10:50:15,451 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:50:15" (1/1) ... [2023-11-26 10:50:15,457 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:50:15,459 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:50:15,460 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:50:15,460 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:50:15,462 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:50:15" (1/1) ... [2023-11-26 10:50:15,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:50:15,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c5307a-528b-4ea4-a405-e29ab9c01c3b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:50:15,499 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c5307a-528b-4ea4-a405-e29ab9c01c3b/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:50:15,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c5307a-528b-4ea4-a405-e29ab9c01c3b/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:50:15,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 10:50:15,551 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-26 10:50:15,551 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-11-26 10:50:15,551 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-11-26 10:50:15,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 10:50:15,552 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-26 10:50:15,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-26 10:50:15,553 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-11-26 10:50:15,554 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-11-26 10:50:15,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-26 10:50:15,554 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-26 10:50:15,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 10:50:15,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:50:15,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-26 10:50:15,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-26 10:50:15,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:50:15,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:50:15,559 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 10:50:15,771 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:50:15,774 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:50:16,679 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:50:16,723 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:50:16,723 INFO L309 CfgBuilder]: Removed 15 assume(true) statements. [2023-11-26 10:50:16,726 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:50:16 BoogieIcfgContainer [2023-11-26 10:50:16,727 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:50:16,731 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:50:16,731 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:50:16,735 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:50:16,736 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:50:14" (1/3) ... [2023-11-26 10:50:16,737 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63b32d54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:50:16, skipping insertion in model container [2023-11-26 10:50:16,738 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:50:15" (2/3) ... [2023-11-26 10:50:16,740 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63b32d54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:50:16, skipping insertion in model container [2023-11-26 10:50:16,740 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:50:16" (3/3) ... [2023-11-26 10:50:16,742 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_81-list_racing.i [2023-11-26 10:50:16,754 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 10:50:16,766 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:50:16,766 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2023-11-26 10:50:16,767 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 10:50:16,917 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-26 10:50:16,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 339 places, 358 transitions, 736 flow [2023-11-26 10:50:17,309 INFO L124 PetriNetUnfolderBase]: 54/657 cut-off events. [2023-11-26 10:50:17,310 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-26 10:50:17,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 674 conditions, 657 events. 54/657 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3005 event pairs, 0 based on Foata normal form. 0/561 useless extension candidates. Maximal degree in co-relation 328. Up to 8 conditions per place. [2023-11-26 10:50:17,337 INFO L82 GeneralOperation]: Start removeDead. Operand has 339 places, 358 transitions, 736 flow [2023-11-26 10:50:17,394 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 339 places, 358 transitions, 736 flow [2023-11-26 10:50:17,421 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:50:17,428 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;@3aa424f2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:50:17,429 INFO L358 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2023-11-26 10:50:17,434 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 10:50:17,435 INFO L124 PetriNetUnfolderBase]: 0/37 cut-off events. [2023-11-26 10:50:17,435 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 10:50:17,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:50:17,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:50:17,436 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2023-11-26 10:50:17,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:50:17,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1964656192, now seen corresponding path program 1 times [2023-11-26 10:50:17,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:50:17,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749899348] [2023-11-26 10:50:17,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:50:17,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:50:17,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:50:17,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:50:17,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:50:17,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749899348] [2023-11-26 10:50:17,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749899348] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:50:17,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:50:17,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:50:17,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196623835] [2023-11-26 10:50:17,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:50:17,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:50:17,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:50:17,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:50:17,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:50:17,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 358 [2023-11-26 10:50:17,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 358 transitions, 736 flow. Second operand has 3 states, 3 states have (on average 315.3333333333333) internal successors, (946), 3 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:50:17,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:50:17,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 358 [2023-11-26 10:50:17,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:50:18,710 INFO L124 PetriNetUnfolderBase]: 184/2286 cut-off events. [2023-11-26 10:50:18,711 INFO L125 PetriNetUnfolderBase]: For 108/108 co-relation queries the response was YES. [2023-11-26 10:50:18,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2620 conditions, 2286 events. 184/2286 cut-off events. For 108/108 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 17327 event pairs, 132 based on Foata normal form. 276/2338 useless extension candidates. Maximal degree in co-relation 1780. Up to 283 conditions per place. [2023-11-26 10:50:18,745 INFO L140 encePairwiseOnDemand]: 338/358 looper letters, 23 selfloop transitions, 2 changer transitions 0/337 dead transitions. [2023-11-26 10:50:18,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 337 transitions, 744 flow [2023-11-26 10:50:18,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:50:18,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 10:50:18,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 985 transitions. [2023-11-26 10:50:18,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9171322160148976 [2023-11-26 10:50:18,773 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 985 transitions. [2023-11-26 10:50:18,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 985 transitions. [2023-11-26 10:50:18,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:50:18,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 985 transitions. [2023-11-26 10:50:18,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 328.3333333333333) internal successors, (985), 3 states have internal predecessors, (985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:50:18,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:50:18,806 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:50:18,808 INFO L175 Difference]: Start difference. First operand has 339 places, 358 transitions, 736 flow. Second operand 3 states and 985 transitions. [2023-11-26 10:50:18,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 337 transitions, 744 flow [2023-11-26 10:50:18,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 337 transitions, 744 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 10:50:18,835 INFO L231 Difference]: Finished difference. Result has 337 places, 337 transitions, 698 flow [2023-11-26 10:50:18,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=694, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=698, PETRI_PLACES=337, PETRI_TRANSITIONS=337} [2023-11-26 10:50:18,843 INFO L281 CegarLoopForPetriNet]: 339 programPoint places, -2 predicate places. [2023-11-26 10:50:18,844 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 337 transitions, 698 flow [2023-11-26 10:50:18,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 315.3333333333333) internal successors, (946), 3 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:50:18,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:50:18,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:50:18,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 10:50:18,847 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2023-11-26 10:50:18,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:50:18,847 INFO L85 PathProgramCache]: Analyzing trace with hash 925283127, now seen corresponding path program 1 times [2023-11-26 10:50:18,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:50:18,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060176780] [2023-11-26 10:50:18,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:50:18,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:50:18,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:50:18,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:50:18,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:50:18,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060176780] [2023-11-26 10:50:18,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060176780] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:50:18,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:50:18,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:50:18,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046916387] [2023-11-26 10:50:18,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:50:18,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:50:18,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:50:18,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:50:18,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:50:19,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 358 [2023-11-26 10:50:19,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 337 transitions, 698 flow. Second operand has 3 states, 3 states have (on average 315.0) internal successors, (945), 3 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:50:19,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:50:19,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 358 [2023-11-26 10:50:19,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:50:19,661 INFO L124 PetriNetUnfolderBase]: 104/1803 cut-off events. [2023-11-26 10:50:19,662 INFO L125 PetriNetUnfolderBase]: For 128/128 co-relation queries the response was YES. [2023-11-26 10:50:19,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2050 conditions, 1803 events. 104/1803 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 11485 event pairs, 72 based on Foata normal form. 0/1633 useless extension candidates. Maximal degree in co-relation 2002. Up to 185 conditions per place. [2023-11-26 10:50:19,690 INFO L140 encePairwiseOnDemand]: 354/358 looper letters, 22 selfloop transitions, 1 changer transitions 0/334 dead transitions. [2023-11-26 10:50:19,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 334 transitions, 738 flow [2023-11-26 10:50:19,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:50:19,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 10:50:19,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 968 transitions. [2023-11-26 10:50:19,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9013035381750466 [2023-11-26 10:50:19,695 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 968 transitions. [2023-11-26 10:50:19,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 968 transitions. [2023-11-26 10:50:19,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:50:19,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 968 transitions. [2023-11-26 10:50:19,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:50:19,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:50:19,707 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:50:19,707 INFO L175 Difference]: Start difference. First operand has 337 places, 337 transitions, 698 flow. Second operand 3 states and 968 transitions. [2023-11-26 10:50:19,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 334 transitions, 738 flow [2023-11-26 10:50:19,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 334 transitions, 734 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 10:50:19,723 INFO L231 Difference]: Finished difference. Result has 334 places, 334 transitions, 690 flow [2023-11-26 10:50:19,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=690, PETRI_PLACES=334, PETRI_TRANSITIONS=334} [2023-11-26 10:50:19,726 INFO L281 CegarLoopForPetriNet]: 339 programPoint places, -5 predicate places. [2023-11-26 10:50:19,727 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 334 transitions, 690 flow [2023-11-26 10:50:19,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 315.0) internal successors, (945), 3 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:50:19,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:50:19,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:50:19,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 10:50:19,733 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2023-11-26 10:50:19,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:50:19,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1295378750, now seen corresponding path program 1 times [2023-11-26 10:50:19,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:50:19,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477615381] [2023-11-26 10:50:19,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:50:19,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:50:19,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:50:20,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:50:20,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:50:20,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477615381] [2023-11-26 10:50:20,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477615381] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:50:20,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:50:20,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 10:50:20,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766764874] [2023-11-26 10:50:20,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:50:20,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:50:20,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:50:20,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:50:20,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:50:21,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 358 [2023-11-26 10:50:21,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 334 transitions, 690 flow. Second operand has 6 states, 6 states have (on average 258.3333333333333) internal successors, (1550), 6 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:50:21,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:50:21,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 358 [2023-11-26 10:50:21,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:50:29,545 INFO L124 PetriNetUnfolderBase]: 15154/41706 cut-off events. [2023-11-26 10:50:29,546 INFO L125 PetriNetUnfolderBase]: For 439/439 co-relation queries the response was YES. [2023-11-26 10:50:29,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65077 conditions, 41706 events. 15154/41706 cut-off events. For 439/439 co-relation queries the response was YES. Maximal size of possible extension queue 820. Compared 472771 event pairs, 14530 based on Foata normal form. 0/38789 useless extension candidates. Maximal degree in co-relation 65030. Up to 23173 conditions per place. [2023-11-26 10:50:29,948 INFO L140 encePairwiseOnDemand]: 352/358 looper letters, 77 selfloop transitions, 5 changer transitions 0/333 dead transitions. [2023-11-26 10:50:29,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 333 transitions, 852 flow [2023-11-26 10:50:29,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:50:29,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 10:50:29,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1625 transitions. [2023-11-26 10:50:29,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7565176908752328 [2023-11-26 10:50:29,956 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1625 transitions. [2023-11-26 10:50:29,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1625 transitions. [2023-11-26 10:50:29,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:50:29,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1625 transitions. [2023-11-26 10:50:29,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 270.8333333333333) internal successors, (1625), 6 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:50:29,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 358.0) internal successors, (2506), 7 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:50:29,973 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 358.0) internal successors, (2506), 7 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:50:29,973 INFO L175 Difference]: Start difference. First operand has 334 places, 334 transitions, 690 flow. Second operand 6 states and 1625 transitions. [2023-11-26 10:50:29,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 333 transitions, 852 flow [2023-11-26 10:50:29,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 333 transitions, 851 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 10:50:29,989 INFO L231 Difference]: Finished difference. Result has 337 places, 333 transitions, 697 flow [2023-11-26 10:50:29,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=687, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=697, PETRI_PLACES=337, PETRI_TRANSITIONS=333} [2023-11-26 10:50:29,992 INFO L281 CegarLoopForPetriNet]: 339 programPoint places, -2 predicate places. [2023-11-26 10:50:29,992 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 333 transitions, 697 flow [2023-11-26 10:50:29,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 258.3333333333333) internal successors, (1550), 6 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:50:29,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:50:29,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:50:29,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 10:50:29,995 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2023-11-26 10:50:29,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:50:29,996 INFO L85 PathProgramCache]: Analyzing trace with hash 381154993, now seen corresponding path program 1 times [2023-11-26 10:50:29,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:50:29,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700164021] [2023-11-26 10:50:29,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:50:29,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:50:30,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:50:30,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:50:30,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:50:30,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700164021] [2023-11-26 10:50:30,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700164021] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:50:30,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:50:30,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 10:50:30,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117087103] [2023-11-26 10:50:30,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:50:30,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:50:30,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:50:30,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:50:30,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:50:31,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 358 [2023-11-26 10:50:31,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 333 transitions, 697 flow. Second operand has 6 states, 6 states have (on average 258.3333333333333) internal successors, (1550), 6 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:50:31,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:50:31,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 358 [2023-11-26 10:50:31,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:50:38,791 INFO L124 PetriNetUnfolderBase]: 15154/41705 cut-off events. [2023-11-26 10:50:38,791 INFO L125 PetriNetUnfolderBase]: For 439/439 co-relation queries the response was YES. [2023-11-26 10:50:38,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65081 conditions, 41705 events. 15154/41705 cut-off events. For 439/439 co-relation queries the response was YES. Maximal size of possible extension queue 820. Compared 472691 event pairs, 14530 based on Foata normal form. 0/38789 useless extension candidates. Maximal degree in co-relation 65034. Up to 23173 conditions per place. [2023-11-26 10:50:39,086 INFO L140 encePairwiseOnDemand]: 352/358 looper letters, 77 selfloop transitions, 5 changer transitions 0/332 dead transitions. [2023-11-26 10:50:39,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 332 transitions, 859 flow [2023-11-26 10:50:39,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:50:39,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 10:50:39,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1625 transitions. [2023-11-26 10:50:39,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7565176908752328 [2023-11-26 10:50:39,094 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1625 transitions. [2023-11-26 10:50:39,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1625 transitions. [2023-11-26 10:50:39,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:50:39,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1625 transitions. [2023-11-26 10:50:39,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 270.8333333333333) internal successors, (1625), 6 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:50:39,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 358.0) internal successors, (2506), 7 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:50:39,111 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 358.0) internal successors, (2506), 7 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:50:39,111 INFO L175 Difference]: Start difference. First operand has 337 places, 333 transitions, 697 flow. Second operand 6 states and 1625 transitions. [2023-11-26 10:50:39,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 332 transitions, 859 flow [2023-11-26 10:50:39,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 332 transitions, 849 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-26 10:50:39,126 INFO L231 Difference]: Finished difference. Result has 336 places, 332 transitions, 695 flow [2023-11-26 10:50:39,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=685, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=695, PETRI_PLACES=336, PETRI_TRANSITIONS=332} [2023-11-26 10:50:39,129 INFO L281 CegarLoopForPetriNet]: 339 programPoint places, -3 predicate places. [2023-11-26 10:50:39,129 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 332 transitions, 695 flow [2023-11-26 10:50:39,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 258.3333333333333) internal successors, (1550), 6 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:50:39,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:50:39,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:50:39,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 10:50:39,134 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2023-11-26 10:50:39,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:50:39,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1391949085, now seen corresponding path program 1 times [2023-11-26 10:50:39,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:50:39,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546710647] [2023-11-26 10:50:39,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:50:39,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:50:39,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:50:39,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:50:39,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:50:39,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546710647] [2023-11-26 10:50:39,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546710647] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:50:39,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:50:39,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:50:39,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045030874] [2023-11-26 10:50:39,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:50:39,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:50:39,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:50:39,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:50:39,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:50:39,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 318 out of 358 [2023-11-26 10:50:39,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 332 transitions, 695 flow. Second operand has 3 states, 3 states have (on average 319.3333333333333) internal successors, (958), 3 states have internal predecessors, (958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:50:39,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:50:39,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 318 of 358 [2023-11-26 10:50:39,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:50:39,888 INFO L124 PetriNetUnfolderBase]: 133/1736 cut-off events. [2023-11-26 10:50:39,888 INFO L125 PetriNetUnfolderBase]: For 88/88 co-relation queries the response was YES. [2023-11-26 10:50:39,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1988 conditions, 1736 events. 133/1736 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 11806 event pairs, 48 based on Foata normal form. 1/1579 useless extension candidates. Maximal degree in co-relation 1940. Up to 202 conditions per place. [2023-11-26 10:50:39,903 INFO L140 encePairwiseOnDemand]: 355/358 looper letters, 22 selfloop transitions, 2 changer transitions 0/334 dead transitions. [2023-11-26 10:50:39,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 334 transitions, 747 flow [2023-11-26 10:50:39,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:50:39,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 10:50:39,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 979 transitions. [2023-11-26 10:50:39,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9115456238361266 [2023-11-26 10:50:39,909 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 979 transitions. [2023-11-26 10:50:39,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 979 transitions. [2023-11-26 10:50:39,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:50:39,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 979 transitions. [2023-11-26 10:50:39,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 326.3333333333333) internal successors, (979), 3 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:50:39,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:50:39,920 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:50:39,920 INFO L175 Difference]: Start difference. First operand has 336 places, 332 transitions, 695 flow. Second operand 3 states and 979 transitions. [2023-11-26 10:50:39,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 334 transitions, 747 flow [2023-11-26 10:50:39,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 334 transitions, 737 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-26 10:50:39,930 INFO L231 Difference]: Finished difference. Result has 334 places, 332 transitions, 693 flow [2023-11-26 10:50:39,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=685, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=693, PETRI_PLACES=334, PETRI_TRANSITIONS=332} [2023-11-26 10:50:39,932 INFO L281 CegarLoopForPetriNet]: 339 programPoint places, -5 predicate places. [2023-11-26 10:50:39,933 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 332 transitions, 693 flow [2023-11-26 10:50:39,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 319.3333333333333) internal successors, (958), 3 states have internal predecessors, (958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:50:39,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:50:39,934 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:50:39,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 10:50:39,935 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2023-11-26 10:50:39,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:50:39,935 INFO L85 PathProgramCache]: Analyzing trace with hash 2128002247, now seen corresponding path program 1 times [2023-11-26 10:50:39,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:50:39,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476157263] [2023-11-26 10:50:39,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:50:39,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:50:39,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:50:39,976 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:50:39,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:50:40,033 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:50:40,033 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 10:50:40,035 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (35 of 36 remaining) [2023-11-26 10:50:40,037 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONDATA_RACE (34 of 36 remaining) [2023-11-26 10:50:40,038 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONDATA_RACE (33 of 36 remaining) [2023-11-26 10:50:40,038 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONDATA_RACE (32 of 36 remaining) [2023-11-26 10:50:40,038 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr7ASSERT_VIOLATIONDATA_RACE (31 of 36 remaining) [2023-11-26 10:50:40,038 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONDATA_RACE (30 of 36 remaining) [2023-11-26 10:50:40,039 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr5ASSERT_VIOLATIONDATA_RACE (29 of 36 remaining) [2023-11-26 10:50:40,039 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4ASSERT_VIOLATIONDATA_RACE (28 of 36 remaining) [2023-11-26 10:50:40,039 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr6ASSERT_VIOLATIONDATA_RACE (27 of 36 remaining) [2023-11-26 10:50:40,039 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (26 of 36 remaining) [2023-11-26 10:50:40,040 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (25 of 36 remaining) [2023-11-26 10:50:40,040 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (24 of 36 remaining) [2023-11-26 10:50:40,040 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (23 of 36 remaining) [2023-11-26 10:50:40,041 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (22 of 36 remaining) [2023-11-26 10:50:40,041 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (21 of 36 remaining) [2023-11-26 10:50:40,041 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 36 remaining) [2023-11-26 10:50:40,041 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONDATA_RACE (19 of 36 remaining) [2023-11-26 10:50:40,042 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1ASSERT_VIOLATIONDATA_RACE (18 of 36 remaining) [2023-11-26 10:50:40,042 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2ASSERT_VIOLATIONDATA_RACE (17 of 36 remaining) [2023-11-26 10:50:40,042 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3ASSERT_VIOLATIONDATA_RACE (16 of 36 remaining) [2023-11-26 10:50:40,042 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4ASSERT_VIOLATIONDATA_RACE (15 of 36 remaining) [2023-11-26 10:50:40,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr5ASSERT_VIOLATIONDATA_RACE (14 of 36 remaining) [2023-11-26 10:50:40,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 36 remaining) [2023-11-26 10:50:40,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONDATA_RACE (12 of 36 remaining) [2023-11-26 10:50:40,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONDATA_RACE (11 of 36 remaining) [2023-11-26 10:50:40,044 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr7ASSERT_VIOLATIONDATA_RACE (10 of 36 remaining) [2023-11-26 10:50:40,044 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONDATA_RACE (9 of 36 remaining) [2023-11-26 10:50:40,044 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr5ASSERT_VIOLATIONDATA_RACE (8 of 36 remaining) [2023-11-26 10:50:40,044 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4ASSERT_VIOLATIONDATA_RACE (7 of 36 remaining) [2023-11-26 10:50:40,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr6ASSERT_VIOLATIONDATA_RACE (6 of 36 remaining) [2023-11-26 10:50:40,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 36 remaining) [2023-11-26 10:50:40,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1ASSERT_VIOLATIONDATA_RACE (4 of 36 remaining) [2023-11-26 10:50:40,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2ASSERT_VIOLATIONDATA_RACE (3 of 36 remaining) [2023-11-26 10:50:40,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3ASSERT_VIOLATIONDATA_RACE (2 of 36 remaining) [2023-11-26 10:50:40,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4ASSERT_VIOLATIONDATA_RACE (1 of 36 remaining) [2023-11-26 10:50:40,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 36 remaining) [2023-11-26 10:50:40,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 10:50:40,047 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-11-26 10:50:40,050 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-26 10:50:40,050 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-26 10:50:40,182 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-11-26 10:50:40,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 544 places, 579 transitions, 1202 flow [2023-11-26 10:50:40,943 INFO L124 PetriNetUnfolderBase]: 197/1914 cut-off events. [2023-11-26 10:50:40,944 INFO L125 PetriNetUnfolderBase]: For 72/90 co-relation queries the response was YES. [2023-11-26 10:50:40,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2003 conditions, 1914 events. 197/1914 cut-off events. For 72/90 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 13474 event pairs, 2 based on Foata normal form. 0/1620 useless extension candidates. Maximal degree in co-relation 1184. Up to 32 conditions per place. [2023-11-26 10:50:40,996 INFO L82 GeneralOperation]: Start removeDead. Operand has 544 places, 579 transitions, 1202 flow [2023-11-26 10:50:41,023 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 544 places, 579 transitions, 1202 flow [2023-11-26 10:50:41,024 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:50:41,025 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;@3aa424f2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:50:41,025 INFO L358 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2023-11-26 10:50:41,029 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 10:50:41,029 INFO L124 PetriNetUnfolderBase]: 0/37 cut-off events. [2023-11-26 10:50:41,029 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 10:50:41,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:50:41,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:50:41,030 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2023-11-26 10:50:41,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:50:41,030 INFO L85 PathProgramCache]: Analyzing trace with hash 396085408, now seen corresponding path program 1 times [2023-11-26 10:50:41,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:50:41,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251691919] [2023-11-26 10:50:41,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:50:41,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:50:41,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:50:41,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:50:41,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:50:41,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251691919] [2023-11-26 10:50:41,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251691919] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:50:41,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:50:41,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:50:41,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238627628] [2023-11-26 10:50:41,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:50:41,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:50:41,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:50:41,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:50:41,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:50:41,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 503 out of 579 [2023-11-26 10:50:41,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 544 places, 579 transitions, 1202 flow. Second operand has 3 states, 3 states have (on average 504.3333333333333) internal successors, (1513), 3 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:50:41,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:50:41,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 503 of 579 [2023-11-26 10:50:41,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand