./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/02_inc_cas.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_2b9915a4-ecc7-4e1e-9e45-41db9e81a7a2/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b9915a4-ecc7-4e1e-9e45-41db9e81a7a2/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_2b9915a4-ecc7-4e1e-9e45-41db9e81a7a2/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b9915a4-ecc7-4e1e-9e45-41db9e81a7a2/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/02_inc_cas.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b9915a4-ecc7-4e1e-9e45-41db9e81a7a2/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_2b9915a4-ecc7-4e1e-9e45-41db9e81a7a2/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 ede09850ec25b369afc0cd16258beff942f9fc7c5304532be31fd5925a934e14 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:49:26,374 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:49:26,492 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b9915a4-ecc7-4e1e-9e45-41db9e81a7a2/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-26 11:49:26,497 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:49:26,498 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:49:26,548 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:49:26,549 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:49:26,550 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:49:26,551 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:49:26,552 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:49:26,553 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:49:26,553 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:49:26,554 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:49:26,555 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:49:26,556 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:49:26,557 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:49:26,557 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:49:26,561 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:49:26,562 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:49:26,563 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:49:26,563 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:49:26,564 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:49:26,565 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-26 11:49:26,565 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:49:26,566 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:49:26,567 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:49:26,567 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:49:26,568 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:49:26,569 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:49:26,569 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:49:26,570 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:49:26,571 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:49:26,571 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:49:26,572 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:49:26,573 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:49:26,573 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:49:26,574 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:49:26,574 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:49:26,575 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:49:26,576 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:49:26,576 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:49:26,577 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_2b9915a4-ecc7-4e1e-9e45-41db9e81a7a2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b9915a4-ecc7-4e1e-9e45-41db9e81a7a2/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ede09850ec25b369afc0cd16258beff942f9fc7c5304532be31fd5925a934e14 [2023-11-26 11:49:26,960 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:49:27,011 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:49:27,014 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:49:27,016 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:49:27,018 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:49:27,020 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b9915a4-ecc7-4e1e-9e45-41db9e81a7a2/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/pthread-ext/02_inc_cas.i [2023-11-26 11:49:30,369 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:49:30,643 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:49:30,656 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b9915a4-ecc7-4e1e-9e45-41db9e81a7a2/sv-benchmarks/c/pthread-ext/02_inc_cas.i [2023-11-26 11:49:30,686 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b9915a4-ecc7-4e1e-9e45-41db9e81a7a2/bin/uautomizer-verify-VRDe98Ueme/data/f7d69d619/876115948680468ea2d0ad4722ab4867/FLAGb32f17ae3 [2023-11-26 11:49:30,700 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b9915a4-ecc7-4e1e-9e45-41db9e81a7a2/bin/uautomizer-verify-VRDe98Ueme/data/f7d69d619/876115948680468ea2d0ad4722ab4867 [2023-11-26 11:49:30,702 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:49:30,704 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:49:30,706 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:49:30,706 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:49:30,715 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:49:30,719 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:49:30" (1/1) ... [2023-11-26 11:49:30,720 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7db3a162 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:30, skipping insertion in model container [2023-11-26 11:49:30,720 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:49:30" (1/1) ... [2023-11-26 11:49:30,790 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:49:31,355 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:49:31,368 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:49:31,472 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:49:31,513 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:49:31,513 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:49:31,522 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:49:31,523 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:31 WrapperNode [2023-11-26 11:49:31,523 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:49:31,524 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:49:31,525 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:49:31,525 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:49:31,534 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:31" (1/1) ... [2023-11-26 11:49:31,571 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:31" (1/1) ... [2023-11-26 11:49:31,610 INFO L138 Inliner]: procedures = 170, calls = 29, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 118 [2023-11-26 11:49:31,611 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:49:31,612 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:49:31,612 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:49:31,613 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:49:31,624 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:31" (1/1) ... [2023-11-26 11:49:31,624 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:31" (1/1) ... [2023-11-26 11:49:31,628 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:31" (1/1) ... [2023-11-26 11:49:31,629 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:31" (1/1) ... [2023-11-26 11:49:31,641 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:31" (1/1) ... [2023-11-26 11:49:31,645 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:31" (1/1) ... [2023-11-26 11:49:31,648 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:31" (1/1) ... [2023-11-26 11:49:31,649 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:31" (1/1) ... [2023-11-26 11:49:31,653 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:49:31,654 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:49:31,655 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:49:31,655 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:49:31,656 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:31" (1/1) ... [2023-11-26 11:49:31,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:49:31,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b9915a4-ecc7-4e1e-9e45-41db9e81a7a2/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:49:31,706 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b9915a4-ecc7-4e1e-9e45-41db9e81a7a2/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:49:31,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b9915a4-ecc7-4e1e-9e45-41db9e81a7a2/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:49:31,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-26 11:49:31,745 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-26 11:49:31,745 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-26 11:49:31,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-26 11:49:31,745 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-26 11:49:31,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:49:31,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:49:31,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:49:31,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-26 11:49:31,746 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-26 11:49:31,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:49:31,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:49:31,749 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 11:49:31,954 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:49:31,956 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:49:32,244 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:49:32,543 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:49:32,554 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-26 11:49:32,556 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:49:32 BoogieIcfgContainer [2023-11-26 11:49:32,556 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:49:32,559 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:49:32,559 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:49:32,570 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:49:32,570 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:49:30" (1/3) ... [2023-11-26 11:49:32,572 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ca41bbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:49:32, skipping insertion in model container [2023-11-26 11:49:32,572 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:31" (2/3) ... [2023-11-26 11:49:32,572 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ca41bbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:49:32, skipping insertion in model container [2023-11-26 11:49:32,573 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:49:32" (3/3) ... [2023-11-26 11:49:32,575 INFO L112 eAbstractionObserver]: Analyzing ICFG 02_inc_cas.i [2023-11-26 11:49:32,583 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 11:49:32,592 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:49:32,593 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-11-26 11:49:32,593 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 11:49:32,718 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 11:49:32,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 62 transitions, 128 flow [2023-11-26 11:49:32,852 INFO L124 PetriNetUnfolderBase]: 5/73 cut-off events. [2023-11-26 11:49:32,852 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:49:32,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 73 events. 5/73 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 146 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 48. Up to 4 conditions per place. [2023-11-26 11:49:32,859 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 62 transitions, 128 flow [2023-11-26 11:49:32,865 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 62 transitions, 128 flow [2023-11-26 11:49:32,885 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:49:32,894 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;@17158810, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:49:32,895 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2023-11-26 11:49:32,921 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:49:32,922 INFO L124 PetriNetUnfolderBase]: 2/36 cut-off events. [2023-11-26 11:49:32,922 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:49:32,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:49:32,923 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] [2023-11-26 11:49:32,924 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2023-11-26 11:49:32,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:32,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1160521855, now seen corresponding path program 1 times [2023-11-26 11:49:32,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:32,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429324804] [2023-11-26 11:49:32,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:32,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:33,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:33,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:49:33,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:33,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429324804] [2023-11-26 11:49:33,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429324804] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:33,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:33,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:49:33,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216990840] [2023-11-26 11:49:33,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:33,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 11:49:33,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:33,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 11:49:33,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:49:33,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 62 [2023-11-26 11:49:33,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 62 transitions, 128 flow. Second operand has 2 states, 2 states have (on average 50.0) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:33,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:49:33,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 62 [2023-11-26 11:49:33,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:49:33,865 INFO L124 PetriNetUnfolderBase]: 2/52 cut-off events. [2023-11-26 11:49:33,865 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-26 11:49:33,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 52 events. 2/52 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 30 event pairs, 0 based on Foata normal form. 5/54 useless extension candidates. Maximal degree in co-relation 37. Up to 5 conditions per place. [2023-11-26 11:49:33,867 INFO L140 encePairwiseOnDemand]: 53/62 looper letters, 4 selfloop transitions, 0 changer transitions 0/48 dead transitions. [2023-11-26 11:49:33,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 48 transitions, 108 flow [2023-11-26 11:49:33,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 11:49:33,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-26 11:49:33,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 111 transitions. [2023-11-26 11:49:33,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8951612903225806 [2023-11-26 11:49:33,883 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 111 transitions. [2023-11-26 11:49:33,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 111 transitions. [2023-11-26 11:49:33,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:49:33,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 111 transitions. [2023-11-26 11:49:33,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 55.5) internal successors, (111), 2 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:33,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:33,910 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:33,913 INFO L175 Difference]: Start difference. First operand has 61 places, 62 transitions, 128 flow. Second operand 2 states and 111 transitions. [2023-11-26 11:49:33,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 48 transitions, 108 flow [2023-11-26 11:49:33,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 48 transitions, 108 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 11:49:33,928 INFO L231 Difference]: Finished difference. Result has 50 places, 48 transitions, 100 flow [2023-11-26 11:49:33,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=100, PETRI_PLACES=50, PETRI_TRANSITIONS=48} [2023-11-26 11:49:33,937 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -11 predicate places. [2023-11-26 11:49:33,938 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 48 transitions, 100 flow [2023-11-26 11:49:33,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 50.0) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:33,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:49:33,939 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] [2023-11-26 11:49:33,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:49:33,940 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2023-11-26 11:49:33,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:33,941 INFO L85 PathProgramCache]: Analyzing trace with hash 34926398, now seen corresponding path program 1 times [2023-11-26 11:49:33,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:33,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251330711] [2023-11-26 11:49:33,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:33,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:33,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:49:33,985 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:49:33,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:49:34,033 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:49:34,035 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 11:49:34,038 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2023-11-26 11:49:34,040 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 15 remaining) [2023-11-26 11:49:34,041 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (12 of 15 remaining) [2023-11-26 11:49:34,041 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 15 remaining) [2023-11-26 11:49:34,041 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 15 remaining) [2023-11-26 11:49:34,042 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 15 remaining) [2023-11-26 11:49:34,042 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 15 remaining) [2023-11-26 11:49:34,042 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (7 of 15 remaining) [2023-11-26 11:49:34,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 15 remaining) [2023-11-26 11:49:34,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (5 of 15 remaining) [2023-11-26 11:49:34,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 15 remaining) [2023-11-26 11:49:34,044 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (3 of 15 remaining) [2023-11-26 11:49:34,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 15 remaining) [2023-11-26 11:49:34,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 15 remaining) [2023-11-26 11:49:34,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (0 of 15 remaining) [2023-11-26 11:49:34,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:49:34,048 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-26 11:49:34,051 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-26 11:49:34,051 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-26 11:49:34,136 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 11:49:34,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 98 transitions, 206 flow [2023-11-26 11:49:34,209 INFO L124 PetriNetUnfolderBase]: 9/122 cut-off events. [2023-11-26 11:49:34,210 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-26 11:49:34,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 122 events. 9/122 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 361 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 83. Up to 6 conditions per place. [2023-11-26 11:49:34,212 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 98 transitions, 206 flow [2023-11-26 11:49:34,216 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 98 transitions, 206 flow [2023-11-26 11:49:34,217 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:49:34,224 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;@17158810, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:49:34,226 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-11-26 11:49:34,235 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:49:34,236 INFO L124 PetriNetUnfolderBase]: 2/36 cut-off events. [2023-11-26 11:49:34,236 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:49:34,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:49:34,236 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] [2023-11-26 11:49:34,237 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-11-26 11:49:34,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:34,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1077818209, now seen corresponding path program 1 times [2023-11-26 11:49:34,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:34,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933432774] [2023-11-26 11:49:34,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:34,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:34,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:34,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:49:34,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:34,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933432774] [2023-11-26 11:49:34,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933432774] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:34,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:34,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:49:34,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555506313] [2023-11-26 11:49:34,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:34,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 11:49:34,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:34,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 11:49:34,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:49:34,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 98 [2023-11-26 11:49:34,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 98 transitions, 206 flow. Second operand has 2 states, 2 states have (on average 75.0) internal successors, (150), 2 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:34,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:49:34,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 98 [2023-11-26 11:49:34,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:49:34,742 INFO L124 PetriNetUnfolderBase]: 24/199 cut-off events. [2023-11-26 11:49:34,743 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-11-26 11:49:34,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 199 events. 24/199 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 690 event pairs, 12 based on Foata normal form. 21/199 useless extension candidates. Maximal degree in co-relation 175. Up to 37 conditions per place. [2023-11-26 11:49:34,753 INFO L140 encePairwiseOnDemand]: 82/98 looper letters, 8 selfloop transitions, 0 changer transitions 0/77 dead transitions. [2023-11-26 11:49:34,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 77 transitions, 180 flow [2023-11-26 11:49:34,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 11:49:34,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-26 11:49:34,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 172 transitions. [2023-11-26 11:49:34,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8775510204081632 [2023-11-26 11:49:34,765 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 172 transitions. [2023-11-26 11:49:34,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 172 transitions. [2023-11-26 11:49:34,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:49:34,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 172 transitions. [2023-11-26 11:49:34,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 86.0) internal successors, (172), 2 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:34,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:34,774 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:34,774 INFO L175 Difference]: Start difference. First operand has 96 places, 98 transitions, 206 flow. Second operand 2 states and 172 transitions. [2023-11-26 11:49:34,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 77 transitions, 180 flow [2023-11-26 11:49:34,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 77 transitions, 180 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 11:49:34,778 INFO L231 Difference]: Finished difference. Result has 79 places, 77 transitions, 164 flow [2023-11-26 11:49:34,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=164, PETRI_PLACES=79, PETRI_TRANSITIONS=77} [2023-11-26 11:49:34,780 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, -17 predicate places. [2023-11-26 11:49:34,780 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 77 transitions, 164 flow [2023-11-26 11:49:34,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 75.0) internal successors, (150), 2 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:34,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:49:34,781 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:49:34,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:49:34,781 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-11-26 11:49:34,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:34,782 INFO L85 PathProgramCache]: Analyzing trace with hash 827488149, now seen corresponding path program 1 times [2023-11-26 11:49:34,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:34,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599574198] [2023-11-26 11:49:34,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:34,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:34,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:49:34,819 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:49:34,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:49:34,849 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:49:34,850 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 11:49:34,850 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2023-11-26 11:49:34,850 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2023-11-26 11:49:34,851 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2023-11-26 11:49:34,851 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2023-11-26 11:49:34,851 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2023-11-26 11:49:34,852 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2023-11-26 11:49:34,852 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2023-11-26 11:49:34,852 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2023-11-26 11:49:34,852 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2023-11-26 11:49:34,853 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2023-11-26 11:49:34,853 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2023-11-26 11:49:34,853 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2023-11-26 11:49:34,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2023-11-26 11:49:34,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2023-11-26 11:49:34,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2023-11-26 11:49:34,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2023-11-26 11:49:34,862 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2023-11-26 11:49:34,863 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2023-11-26 11:49:34,863 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2023-11-26 11:49:34,865 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2023-11-26 11:49:34,866 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2023-11-26 11:49:34,866 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2023-11-26 11:49:34,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 11:49:34,867 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-26 11:49:34,868 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-26 11:49:34,868 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-26 11:49:35,000 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 11:49:35,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 134 transitions, 286 flow [2023-11-26 11:49:35,042 INFO L124 PetriNetUnfolderBase]: 13/171 cut-off events. [2023-11-26 11:49:35,042 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-26 11:49:35,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184 conditions, 171 events. 13/171 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 561 event pairs, 0 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 126. Up to 8 conditions per place. [2023-11-26 11:49:35,044 INFO L82 GeneralOperation]: Start removeDead. Operand has 131 places, 134 transitions, 286 flow [2023-11-26 11:49:35,047 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 131 places, 134 transitions, 286 flow [2023-11-26 11:49:35,049 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:49:35,050 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;@17158810, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:49:35,050 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2023-11-26 11:49:35,055 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:49:35,055 INFO L124 PetriNetUnfolderBase]: 2/36 cut-off events. [2023-11-26 11:49:35,055 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:49:35,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:49:35,055 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] [2023-11-26 11:49:35,056 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2023-11-26 11:49:35,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:35,056 INFO L85 PathProgramCache]: Analyzing trace with hash 481507678, now seen corresponding path program 1 times [2023-11-26 11:49:35,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:35,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922887683] [2023-11-26 11:49:35,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:35,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:35,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:35,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:49:35,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:35,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922887683] [2023-11-26 11:49:35,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922887683] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:35,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:35,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:49:35,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829186412] [2023-11-26 11:49:35,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:35,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 11:49:35,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:35,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 11:49:35,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:49:35,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 134 [2023-11-26 11:49:35,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 134 transitions, 286 flow. Second operand has 2 states, 2 states have (on average 100.0) internal successors, (200), 2 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:35,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:49:35,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 134 [2023-11-26 11:49:35,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:49:35,740 INFO L124 PetriNetUnfolderBase]: 174/842 cut-off events. [2023-11-26 11:49:35,741 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2023-11-26 11:49:35,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1153 conditions, 842 events. 174/842 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 5440 event pairs, 108 based on Foata normal form. 85/821 useless extension candidates. Maximal degree in co-relation 811. Up to 229 conditions per place. [2023-11-26 11:49:35,756 INFO L140 encePairwiseOnDemand]: 111/134 looper letters, 12 selfloop transitions, 0 changer transitions 0/106 dead transitions. [2023-11-26 11:49:35,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 106 transitions, 254 flow [2023-11-26 11:49:35,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 11:49:35,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-26 11:49:35,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 233 transitions. [2023-11-26 11:49:35,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8694029850746269 [2023-11-26 11:49:35,759 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 233 transitions. [2023-11-26 11:49:35,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 233 transitions. [2023-11-26 11:49:35,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:49:35,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 233 transitions. [2023-11-26 11:49:35,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 116.5) internal successors, (233), 2 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:35,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:35,763 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:35,763 INFO L175 Difference]: Start difference. First operand has 131 places, 134 transitions, 286 flow. Second operand 2 states and 233 transitions. [2023-11-26 11:49:35,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 106 transitions, 254 flow [2023-11-26 11:49:35,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 106 transitions, 252 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-26 11:49:35,768 INFO L231 Difference]: Finished difference. Result has 108 places, 106 transitions, 228 flow [2023-11-26 11:49:35,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=228, PETRI_PLACES=108, PETRI_TRANSITIONS=106} [2023-11-26 11:49:35,769 INFO L281 CegarLoopForPetriNet]: 131 programPoint places, -23 predicate places. [2023-11-26 11:49:35,770 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 106 transitions, 228 flow [2023-11-26 11:49:35,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 100.0) internal successors, (200), 2 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:35,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:49:35,770 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] [2023-11-26 11:49:35,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 11:49:35,771 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err5ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2023-11-26 11:49:35,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:35,771 INFO L85 PathProgramCache]: Analyzing trace with hash 774160657, now seen corresponding path program 1 times [2023-11-26 11:49:35,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:35,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039078098] [2023-11-26 11:49:35,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:35,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:35,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:36,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:49:36,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:36,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039078098] [2023-11-26 11:49:36,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039078098] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:36,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:36,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:49:36,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645545395] [2023-11-26 11:49:36,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:36,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:49:36,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:36,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:49:36,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:49:36,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 134 [2023-11-26 11:49:36,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 106 transitions, 228 flow. Second operand has 6 states, 6 states have (on average 91.5) internal successors, (549), 6 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:36,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:49:36,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 134 [2023-11-26 11:49:36,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:49:38,827 INFO L124 PetriNetUnfolderBase]: 805/2681 cut-off events. [2023-11-26 11:49:38,828 INFO L125 PetriNetUnfolderBase]: For 247/247 co-relation queries the response was YES. [2023-11-26 11:49:38,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4055 conditions, 2681 events. 805/2681 cut-off events. For 247/247 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 23369 event pairs, 235 based on Foata normal form. 0/2371 useless extension candidates. Maximal degree in co-relation 4049. Up to 770 conditions per place. [2023-11-26 11:49:38,872 INFO L140 encePairwiseOnDemand]: 123/134 looper letters, 46 selfloop transitions, 16 changer transitions 0/147 dead transitions. [2023-11-26 11:49:38,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 147 transitions, 474 flow [2023-11-26 11:49:38,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:49:38,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 11:49:38,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 603 transitions. [2023-11-26 11:49:38,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75 [2023-11-26 11:49:38,877 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 603 transitions. [2023-11-26 11:49:38,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 603 transitions. [2023-11-26 11:49:38,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:49:38,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 603 transitions. [2023-11-26 11:49:38,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 100.5) internal successors, (603), 6 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:38,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 134.0) internal successors, (938), 7 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:38,887 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 134.0) internal successors, (938), 7 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:38,888 INFO L175 Difference]: Start difference. First operand has 108 places, 106 transitions, 228 flow. Second operand 6 states and 603 transitions. [2023-11-26 11:49:38,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 147 transitions, 474 flow [2023-11-26 11:49:38,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 147 transitions, 474 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 11:49:38,898 INFO L231 Difference]: Finished difference. Result has 118 places, 121 transitions, 342 flow [2023-11-26 11:49:38,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=342, PETRI_PLACES=118, PETRI_TRANSITIONS=121} [2023-11-26 11:49:38,901 INFO L281 CegarLoopForPetriNet]: 131 programPoint places, -13 predicate places. [2023-11-26 11:49:38,902 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 121 transitions, 342 flow [2023-11-26 11:49:38,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 91.5) internal successors, (549), 6 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:38,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:49:38,903 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:49:38,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 11:49:38,904 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2023-11-26 11:49:38,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:38,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1627251037, now seen corresponding path program 1 times [2023-11-26 11:49:38,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:38,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014593701] [2023-11-26 11:49:38,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:38,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:38,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:49:38,936 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:49:38,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:49:38,978 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:49:38,982 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 11:49:38,983 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2023-11-26 11:49:38,983 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (27 of 29 remaining) [2023-11-26 11:49:38,983 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (26 of 29 remaining) [2023-11-26 11:49:38,984 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (25 of 29 remaining) [2023-11-26 11:49:38,985 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (24 of 29 remaining) [2023-11-26 11:49:38,986 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (23 of 29 remaining) [2023-11-26 11:49:38,986 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (22 of 29 remaining) [2023-11-26 11:49:38,986 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (21 of 29 remaining) [2023-11-26 11:49:38,987 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 29 remaining) [2023-11-26 11:49:38,987 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (19 of 29 remaining) [2023-11-26 11:49:38,987 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 29 remaining) [2023-11-26 11:49:38,988 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (17 of 29 remaining) [2023-11-26 11:49:38,988 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (16 of 29 remaining) [2023-11-26 11:49:38,988 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (15 of 29 remaining) [2023-11-26 11:49:38,989 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (14 of 29 remaining) [2023-11-26 11:49:38,989 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 29 remaining) [2023-11-26 11:49:38,989 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (12 of 29 remaining) [2023-11-26 11:49:38,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 29 remaining) [2023-11-26 11:49:38,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 29 remaining) [2023-11-26 11:49:38,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 29 remaining) [2023-11-26 11:49:38,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 29 remaining) [2023-11-26 11:49:38,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (7 of 29 remaining) [2023-11-26 11:49:38,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 29 remaining) [2023-11-26 11:49:38,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (5 of 29 remaining) [2023-11-26 11:49:38,992 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 29 remaining) [2023-11-26 11:49:38,992 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (3 of 29 remaining) [2023-11-26 11:49:38,992 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 29 remaining) [2023-11-26 11:49:38,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 29 remaining) [2023-11-26 11:49:38,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (0 of 29 remaining) [2023-11-26 11:49:38,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 11:49:38,994 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-26 11:49:38,995 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-26 11:49:38,995 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-26 11:49:39,138 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 11:49:39,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 170 transitions, 368 flow [2023-11-26 11:49:39,190 INFO L124 PetriNetUnfolderBase]: 17/220 cut-off events. [2023-11-26 11:49:39,190 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-26 11:49:39,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 220 events. 17/220 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 782 event pairs, 0 based on Foata normal form. 0/170 useless extension candidates. Maximal degree in co-relation 179. Up to 10 conditions per place. [2023-11-26 11:49:39,194 INFO L82 GeneralOperation]: Start removeDead. Operand has 166 places, 170 transitions, 368 flow [2023-11-26 11:49:39,199 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 170 transitions, 368 flow [2023-11-26 11:49:39,201 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:49:39,202 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;@17158810, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:49:39,202 INFO L358 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2023-11-26 11:49:39,207 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:49:39,207 INFO L124 PetriNetUnfolderBase]: 2/38 cut-off events. [2023-11-26 11:49:39,207 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:49:39,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:49:39,208 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] [2023-11-26 11:49:39,208 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2023-11-26 11:49:39,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:39,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1412315198, now seen corresponding path program 1 times [2023-11-26 11:49:39,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:39,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669750378] [2023-11-26 11:49:39,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:39,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:39,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:39,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:49:39,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:39,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669750378] [2023-11-26 11:49:39,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669750378] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:39,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:39,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:49:39,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458594142] [2023-11-26 11:49:39,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:39,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 11:49:39,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:39,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 11:49:39,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:49:39,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 170 [2023-11-26 11:49:39,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 170 transitions, 368 flow. Second operand has 2 states, 2 states have (on average 125.0) internal successors, (250), 2 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:39,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:49:39,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 170 [2023-11-26 11:49:39,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:49:40,609 INFO L124 PetriNetUnfolderBase]: 1028/3661 cut-off events. [2023-11-26 11:49:40,610 INFO L125 PetriNetUnfolderBase]: For 755/755 co-relation queries the response was YES. [2023-11-26 11:49:40,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5317 conditions, 3661 events. 1028/3661 cut-off events. For 755/755 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 32442 event pairs, 684 based on Foata normal form. 341/3544 useless extension candidates. Maximal degree in co-relation 3727. Up to 1253 conditions per place. [2023-11-26 11:49:40,687 INFO L140 encePairwiseOnDemand]: 140/170 looper letters, 16 selfloop transitions, 0 changer transitions 0/135 dead transitions. [2023-11-26 11:49:40,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 135 transitions, 330 flow [2023-11-26 11:49:40,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 11:49:40,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-26 11:49:40,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 294 transitions. [2023-11-26 11:49:40,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8647058823529412 [2023-11-26 11:49:40,690 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 294 transitions. [2023-11-26 11:49:40,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 294 transitions. [2023-11-26 11:49:40,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:49:40,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 294 transitions. [2023-11-26 11:49:40,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 147.0) internal successors, (294), 2 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:40,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:40,695 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:40,695 INFO L175 Difference]: Start difference. First operand has 166 places, 170 transitions, 368 flow. Second operand 2 states and 294 transitions. [2023-11-26 11:49:40,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 135 transitions, 330 flow [2023-11-26 11:49:40,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 135 transitions, 324 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-11-26 11:49:40,703 INFO L231 Difference]: Finished difference. Result has 137 places, 135 transitions, 292 flow [2023-11-26 11:49:40,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=292, PETRI_PLACES=137, PETRI_TRANSITIONS=135} [2023-11-26 11:49:40,707 INFO L281 CegarLoopForPetriNet]: 166 programPoint places, -29 predicate places. [2023-11-26 11:49:40,707 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 135 transitions, 292 flow [2023-11-26 11:49:40,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 125.0) internal successors, (250), 2 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:40,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:49:40,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:49:40,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 11:49:40,709 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err5ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2023-11-26 11:49:40,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:40,709 INFO L85 PathProgramCache]: Analyzing trace with hash 241195134, now seen corresponding path program 1 times [2023-11-26 11:49:40,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:40,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509584772] [2023-11-26 11:49:40,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:40,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:40,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:41,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:49:41,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:41,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509584772] [2023-11-26 11:49:41,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509584772] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:41,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:41,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:49:41,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599498196] [2023-11-26 11:49:41,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:41,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:49:41,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:41,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:49:41,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:49:41,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 170 [2023-11-26 11:49:41,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 135 transitions, 292 flow. Second operand has 6 states, 6 states have (on average 116.5) internal successors, (699), 6 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:41,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:49:41,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 170 [2023-11-26 11:49:41,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:49:47,911 INFO L124 PetriNetUnfolderBase]: 4956/13322 cut-off events. [2023-11-26 11:49:47,912 INFO L125 PetriNetUnfolderBase]: For 1141/1141 co-relation queries the response was YES. [2023-11-26 11:49:48,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20720 conditions, 13322 events. 4956/13322 cut-off events. For 1141/1141 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 141299 event pairs, 1678 based on Foata normal form. 0/11793 useless extension candidates. Maximal degree in co-relation 20713. Up to 4383 conditions per place. [2023-11-26 11:49:48,185 INFO L140 encePairwiseOnDemand]: 158/170 looper letters, 62 selfloop transitions, 20 changer transitions 0/192 dead transitions. [2023-11-26 11:49:48,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 192 transitions, 630 flow [2023-11-26 11:49:48,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:49:48,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 11:49:48,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 773 transitions. [2023-11-26 11:49:48,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7578431372549019 [2023-11-26 11:49:48,194 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 773 transitions. [2023-11-26 11:49:48,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 773 transitions. [2023-11-26 11:49:48,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:49:48,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 773 transitions. [2023-11-26 11:49:48,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 128.83333333333334) internal successors, (773), 6 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:48,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 170.0) internal successors, (1190), 7 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:48,206 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 170.0) internal successors, (1190), 7 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:48,207 INFO L175 Difference]: Start difference. First operand has 137 places, 135 transitions, 292 flow. Second operand 6 states and 773 transitions. [2023-11-26 11:49:48,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 192 transitions, 630 flow [2023-11-26 11:49:48,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 192 transitions, 630 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 11:49:48,217 INFO L231 Difference]: Finished difference. Result has 147 places, 154 transitions, 432 flow [2023-11-26 11:49:48,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=432, PETRI_PLACES=147, PETRI_TRANSITIONS=154} [2023-11-26 11:49:48,220 INFO L281 CegarLoopForPetriNet]: 166 programPoint places, -19 predicate places. [2023-11-26 11:49:48,220 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 154 transitions, 432 flow [2023-11-26 11:49:48,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 116.5) internal successors, (699), 6 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:48,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:49:48,222 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] [2023-11-26 11:49:48,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 11:49:48,223 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err5ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2023-11-26 11:49:48,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:48,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1040364241, now seen corresponding path program 1 times [2023-11-26 11:49:48,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:48,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862438038] [2023-11-26 11:49:48,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:48,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:48,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:48,769 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 11:49:48,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:48,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862438038] [2023-11-26 11:49:48,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862438038] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:48,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:48,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:49:48,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784746456] [2023-11-26 11:49:48,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:48,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:49:48,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:48,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:49:48,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:49:49,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 170 [2023-11-26 11:49:49,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 154 transitions, 432 flow. Second operand has 6 states, 6 states have (on average 116.66666666666667) internal successors, (700), 6 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:49,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:49:49,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 170 [2023-11-26 11:49:49,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:49:59,433 INFO L124 PetriNetUnfolderBase]: 13786/35470 cut-off events. [2023-11-26 11:49:59,434 INFO L125 PetriNetUnfolderBase]: For 11477/12336 co-relation queries the response was YES. [2023-11-26 11:49:59,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63661 conditions, 35470 events. 13786/35470 cut-off events. For 11477/12336 co-relation queries the response was YES. Maximal size of possible extension queue 1515. Compared 431612 event pairs, 3668 based on Foata normal form. 0/31702 useless extension candidates. Maximal degree in co-relation 63649. Up to 12132 conditions per place. [2023-11-26 11:50:00,378 INFO L140 encePairwiseOnDemand]: 158/170 looper letters, 71 selfloop transitions, 60 changer transitions 0/247 dead transitions. [2023-11-26 11:50:00,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 247 transitions, 1106 flow [2023-11-26 11:50:00,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:50:00,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 11:50:00,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 769 transitions. [2023-11-26 11:50:00,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.753921568627451 [2023-11-26 11:50:00,385 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 769 transitions. [2023-11-26 11:50:00,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 769 transitions. [2023-11-26 11:50:00,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:50:00,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 769 transitions. [2023-11-26 11:50:00,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 128.16666666666666) internal successors, (769), 6 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:00,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 170.0) internal successors, (1190), 7 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:00,396 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 170.0) internal successors, (1190), 7 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:00,397 INFO L175 Difference]: Start difference. First operand has 147 places, 154 transitions, 432 flow. Second operand 6 states and 769 transitions. [2023-11-26 11:50:00,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 247 transitions, 1106 flow [2023-11-26 11:50:00,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 247 transitions, 1106 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 11:50:00,439 INFO L231 Difference]: Finished difference. Result has 157 places, 213 transitions, 1024 flow [2023-11-26 11:50:00,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=432, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1024, PETRI_PLACES=157, PETRI_TRANSITIONS=213} [2023-11-26 11:50:00,441 INFO L281 CegarLoopForPetriNet]: 166 programPoint places, -9 predicate places. [2023-11-26 11:50:00,441 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 213 transitions, 1024 flow [2023-11-26 11:50:00,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 116.66666666666667) internal successors, (700), 6 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:00,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:50:00,442 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:00,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-26 11:50:00,443 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2023-11-26 11:50:00,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:00,443 INFO L85 PathProgramCache]: Analyzing trace with hash 16193130, now seen corresponding path program 1 times [2023-11-26 11:50:00,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:00,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164661360] [2023-11-26 11:50:00,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:00,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:00,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:50:00,478 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:50:00,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:50:00,511 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:50:00,511 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 11:50:00,513 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (35 of 36 remaining) [2023-11-26 11:50:00,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (34 of 36 remaining) [2023-11-26 11:50:00,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (33 of 36 remaining) [2023-11-26 11:50:00,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (32 of 36 remaining) [2023-11-26 11:50:00,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (31 of 36 remaining) [2023-11-26 11:50:00,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (30 of 36 remaining) [2023-11-26 11:50:00,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (29 of 36 remaining) [2023-11-26 11:50:00,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (28 of 36 remaining) [2023-11-26 11:50:00,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (27 of 36 remaining) [2023-11-26 11:50:00,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (26 of 36 remaining) [2023-11-26 11:50:00,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (25 of 36 remaining) [2023-11-26 11:50:00,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (24 of 36 remaining) [2023-11-26 11:50:00,516 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (23 of 36 remaining) [2023-11-26 11:50:00,516 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (22 of 36 remaining) [2023-11-26 11:50:00,516 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (21 of 36 remaining) [2023-11-26 11:50:00,516 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 36 remaining) [2023-11-26 11:50:00,516 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (19 of 36 remaining) [2023-11-26 11:50:00,517 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 36 remaining) [2023-11-26 11:50:00,517 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (17 of 36 remaining) [2023-11-26 11:50:00,517 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (16 of 36 remaining) [2023-11-26 11:50:00,517 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (15 of 36 remaining) [2023-11-26 11:50:00,518 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (14 of 36 remaining) [2023-11-26 11:50:00,518 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 36 remaining) [2023-11-26 11:50:00,518 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (12 of 36 remaining) [2023-11-26 11:50:00,518 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 36 remaining) [2023-11-26 11:50:00,518 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 36 remaining) [2023-11-26 11:50:00,519 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 36 remaining) [2023-11-26 11:50:00,519 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 36 remaining) [2023-11-26 11:50:00,519 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (7 of 36 remaining) [2023-11-26 11:50:00,519 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 36 remaining) [2023-11-26 11:50:00,520 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (5 of 36 remaining) [2023-11-26 11:50:00,520 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 36 remaining) [2023-11-26 11:50:00,520 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (3 of 36 remaining) [2023-11-26 11:50:00,520 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 36 remaining) [2023-11-26 11:50:00,520 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 36 remaining) [2023-11-26 11:50:00,521 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (0 of 36 remaining) [2023-11-26 11:50:00,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-26 11:50:00,521 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-26 11:50:00,522 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-26 11:50:00,522 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-11-26 11:50:00,659 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 11:50:00,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 201 places, 206 transitions, 452 flow [2023-11-26 11:50:00,734 INFO L124 PetriNetUnfolderBase]: 21/269 cut-off events. [2023-11-26 11:50:00,734 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-11-26 11:50:00,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 295 conditions, 269 events. 21/269 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 967 event pairs, 0 based on Foata normal form. 0/207 useless extension candidates. Maximal degree in co-relation 233. Up to 12 conditions per place. [2023-11-26 11:50:00,740 INFO L82 GeneralOperation]: Start removeDead. Operand has 201 places, 206 transitions, 452 flow [2023-11-26 11:50:00,746 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 201 places, 206 transitions, 452 flow [2023-11-26 11:50:00,749 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:50:00,750 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;@17158810, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:50:00,751 INFO L358 AbstractCegarLoop]: Starting to check reachability of 43 error locations. [2023-11-26 11:50:00,755 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:50:00,756 INFO L124 PetriNetUnfolderBase]: 2/36 cut-off events. [2023-11-26 11:50:00,756 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:50:00,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:50:00,756 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] [2023-11-26 11:50:00,757 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2023-11-26 11:50:00,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:00,757 INFO L85 PathProgramCache]: Analyzing trace with hash -524928552, now seen corresponding path program 1 times [2023-11-26 11:50:00,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:00,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381448194] [2023-11-26 11:50:00,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:00,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:00,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:00,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:00,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:00,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381448194] [2023-11-26 11:50:00,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381448194] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:00,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:00,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:50:00,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062607399] [2023-11-26 11:50:00,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:00,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 11:50:00,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:00,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 11:50:00,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:50:00,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 206 [2023-11-26 11:50:00,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 206 transitions, 452 flow. Second operand has 2 states, 2 states have (on average 150.0) internal successors, (300), 2 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:00,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:50:00,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 206 [2023-11-26 11:50:00,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:50:05,072 INFO L124 PetriNetUnfolderBase]: 5466/15952 cut-off events. [2023-11-26 11:50:05,072 INFO L125 PetriNetUnfolderBase]: For 4599/4599 co-relation queries the response was YES. [2023-11-26 11:50:05,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24265 conditions, 15952 events. 5466/15952 cut-off events. For 4599/4599 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 172024 event pairs, 3756 based on Foata normal form. 1365/15440 useless extension candidates. Maximal degree in co-relation 16915. Up to 6373 conditions per place. [2023-11-26 11:50:05,501 INFO L140 encePairwiseOnDemand]: 169/206 looper letters, 20 selfloop transitions, 0 changer transitions 0/164 dead transitions. [2023-11-26 11:50:05,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 164 transitions, 408 flow [2023-11-26 11:50:05,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 11:50:05,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-26 11:50:05,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 355 transitions. [2023-11-26 11:50:05,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8616504854368932 [2023-11-26 11:50:05,508 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 355 transitions. [2023-11-26 11:50:05,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 355 transitions. [2023-11-26 11:50:05,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:50:05,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 355 transitions. [2023-11-26 11:50:05,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 177.5) internal successors, (355), 2 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:05,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:05,519 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:05,519 INFO L175 Difference]: Start difference. First operand has 201 places, 206 transitions, 452 flow. Second operand 2 states and 355 transitions. [2023-11-26 11:50:05,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 164 transitions, 408 flow [2023-11-26 11:50:05,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 164 transitions, 396 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-11-26 11:50:05,529 INFO L231 Difference]: Finished difference. Result has 166 places, 164 transitions, 356 flow [2023-11-26 11:50:05,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=356, PETRI_PLACES=166, PETRI_TRANSITIONS=164} [2023-11-26 11:50:05,532 INFO L281 CegarLoopForPetriNet]: 201 programPoint places, -35 predicate places. [2023-11-26 11:50:05,532 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 164 transitions, 356 flow [2023-11-26 11:50:05,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 150.0) internal successors, (300), 2 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:05,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:50:05,534 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] [2023-11-26 11:50:05,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-26 11:50:05,534 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err5ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2023-11-26 11:50:05,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:05,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1223094095, now seen corresponding path program 1 times [2023-11-26 11:50:05,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:05,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009505722] [2023-11-26 11:50:05,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:05,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:05,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:06,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:06,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:06,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009505722] [2023-11-26 11:50:06,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009505722] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:06,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:06,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:50:06,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565139636] [2023-11-26 11:50:06,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:06,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:50:06,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:06,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:50:06,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:50:06,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 206 [2023-11-26 11:50:06,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 164 transitions, 356 flow. Second operand has 6 states, 6 states have (on average 141.5) internal successors, (849), 6 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:06,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:50:06,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 206 [2023-11-26 11:50:06,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand