./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/40_barrier_vf.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2886f39-f008-43c2-b6ea-b432bc934697/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2886f39-f008-43c2-b6ea-b432bc934697/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2886f39-f008-43c2-b6ea-b432bc934697/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2886f39-f008-43c2-b6ea-b432bc934697/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/40_barrier_vf.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2886f39-f008-43c2-b6ea-b432bc934697/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2886f39-f008-43c2-b6ea-b432bc934697/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5eef73b6b2655059556d731e3a5babc181132142f2417a2cf863165dd8efda84 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:05:56,764 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:05:56,877 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2886f39-f008-43c2-b6ea-b432bc934697/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-19 08:05:56,889 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:05:56,889 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:05:56,925 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:05:56,926 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:05:56,927 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:05:56,928 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:05:56,928 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:05:56,929 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:05:56,930 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:05:56,931 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:05:56,931 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:05:56,932 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:05:56,933 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:05:56,933 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:05:56,934 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:05:56,935 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:05:56,935 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:05:56,936 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:05:56,941 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:05:56,941 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-19 08:05:56,942 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 08:05:56,942 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:05:56,943 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:05:56,943 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:05:56,944 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:05:56,945 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:05:56,946 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:05:56,946 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:05:56,947 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:05:56,947 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:05:56,948 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:05:56,948 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:05:56,949 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:05:56,949 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:05:56,950 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:05:56,950 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:05:56,951 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:05:56,951 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:05:56,952 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_d2886f39-f008-43c2-b6ea-b432bc934697/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2886f39-f008-43c2-b6ea-b432bc934697/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5eef73b6b2655059556d731e3a5babc181132142f2417a2cf863165dd8efda84 [2023-11-19 08:05:57,230 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:05:57,264 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:05:57,267 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:05:57,269 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:05:57,269 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:05:57,270 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2886f39-f008-43c2-b6ea-b432bc934697/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-ext/40_barrier_vf.i [2023-11-19 08:06:00,441 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:06:00,744 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:06:00,744 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2886f39-f008-43c2-b6ea-b432bc934697/sv-benchmarks/c/pthread-ext/40_barrier_vf.i [2023-11-19 08:06:00,764 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2886f39-f008-43c2-b6ea-b432bc934697/bin/uautomizer-verify-uCwYo4JHxu/data/3b2e8c3f7/d4ea1270c43749c9bbd0a456acf39614/FLAGa71bde04e [2023-11-19 08:06:00,786 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2886f39-f008-43c2-b6ea-b432bc934697/bin/uautomizer-verify-uCwYo4JHxu/data/3b2e8c3f7/d4ea1270c43749c9bbd0a456acf39614 [2023-11-19 08:06:00,796 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:06:00,798 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:06:00,799 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:06:00,800 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:06:00,806 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:06:00,807 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:06:00" (1/1) ... [2023-11-19 08:06:00,808 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6abf875b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:00, skipping insertion in model container [2023-11-19 08:06:00,809 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:06:00" (1/1) ... [2023-11-19 08:06:00,887 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:06:01,067 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 08:06:01,307 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:06:01,323 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:06:01,336 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 08:06:01,370 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:06:01,415 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:06:01,415 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:06:01,415 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:06:01,424 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:06:01,424 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:01 WrapperNode [2023-11-19 08:06:01,424 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:06:01,425 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:06:01,425 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:06:01,426 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:06:01,432 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:01" (1/1) ... [2023-11-19 08:06:01,448 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:01" (1/1) ... [2023-11-19 08:06:01,474 INFO L138 Inliner]: procedures = 174, calls = 26, calls flagged for inlining = 11, calls inlined = 13, statements flattened = 126 [2023-11-19 08:06:01,475 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:06:01,476 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:06:01,476 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:06:01,476 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:06:01,486 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:01" (1/1) ... [2023-11-19 08:06:01,486 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:01" (1/1) ... [2023-11-19 08:06:01,490 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:01" (1/1) ... [2023-11-19 08:06:01,491 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:01" (1/1) ... [2023-11-19 08:06:01,498 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:01" (1/1) ... [2023-11-19 08:06:01,503 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:01" (1/1) ... [2023-11-19 08:06:01,505 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:01" (1/1) ... [2023-11-19 08:06:01,507 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:01" (1/1) ... [2023-11-19 08:06:01,510 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:06:01,511 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:06:01,512 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:06:01,512 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:06:01,513 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:01" (1/1) ... [2023-11-19 08:06:01,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:06:01,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2886f39-f008-43c2-b6ea-b432bc934697/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:01,555 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2886f39-f008-43c2-b6ea-b432bc934697/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:06:01,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2886f39-f008-43c2-b6ea-b432bc934697/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:06:01,586 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-19 08:06:01,586 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-19 08:06:01,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 08:06:01,586 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 08:06:01,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:06:01,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 08:06:01,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 08:06:01,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:06:01,587 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 08:06:01,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:06:01,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:06:01,590 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 08:06:01,741 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:06:01,743 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:06:01,985 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:06:02,172 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:06:02,173 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 08:06:02,176 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:06:02 BoogieIcfgContainer [2023-11-19 08:06:02,177 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:06:02,186 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:06:02,186 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:06:02,189 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:06:02,189 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:06:00" (1/3) ... [2023-11-19 08:06:02,190 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a6ad437 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:06:02, skipping insertion in model container [2023-11-19 08:06:02,190 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:01" (2/3) ... [2023-11-19 08:06:02,191 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a6ad437 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:06:02, skipping insertion in model container [2023-11-19 08:06:02,191 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:06:02" (3/3) ... [2023-11-19 08:06:02,192 INFO L112 eAbstractionObserver]: Analyzing ICFG 40_barrier_vf.i [2023-11-19 08:06:02,201 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 08:06:02,215 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:06:02,215 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2023-11-19 08:06:02,215 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 08:06:02,293 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 08:06:02,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 80 transitions, 164 flow [2023-11-19 08:06:02,397 INFO L124 PetriNetUnfolderBase]: 5/91 cut-off events. [2023-11-19 08:06:02,397 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:06:02,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 91 events. 5/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 127 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 66. Up to 4 conditions per place. [2023-11-19 08:06:02,402 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 80 transitions, 164 flow [2023-11-19 08:06:02,408 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 80 transitions, 164 flow [2023-11-19 08:06:02,412 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:06:02,422 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 80 transitions, 164 flow [2023-11-19 08:06:02,426 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 80 transitions, 164 flow [2023-11-19 08:06:02,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 80 transitions, 164 flow [2023-11-19 08:06:02,466 INFO L124 PetriNetUnfolderBase]: 5/91 cut-off events. [2023-11-19 08:06:02,467 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:06:02,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 91 events. 5/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 127 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 66. Up to 4 conditions per place. [2023-11-19 08:06:02,471 INFO L119 LiptonReduction]: Number of co-enabled transitions 1484 [2023-11-19 08:06:04,725 INFO L134 LiptonReduction]: Checked pairs total: 1580 [2023-11-19 08:06:04,725 INFO L136 LiptonReduction]: Total number of compositions: 109 [2023-11-19 08:06:04,742 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:06:04,749 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;@47ccd51e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:06:04,750 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2023-11-19 08:06:04,753 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:06:04,753 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-11-19 08:06:04,753 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:06:04,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:04,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 08:06:04,755 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-11-19 08:06:04,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:04,761 INFO L85 PathProgramCache]: Analyzing trace with hash 17034275, now seen corresponding path program 1 times [2023-11-19 08:06:04,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:04,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126276443] [2023-11-19 08:06:04,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:04,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:04,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:04,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:04,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:04,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126276443] [2023-11-19 08:06:04,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126276443] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:04,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:04,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:06:04,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048116434] [2023-11-19 08:06:04,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:04,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 08:06:04,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:04,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 08:06:04,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:06:04,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 189 [2023-11-19 08:06:04,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 22 transitions, 48 flow. Second operand has 2 states, 2 states have (on average 57.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:04,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:04,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 189 [2023-11-19 08:06:04,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:05,019 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-11-19 08:06:05,019 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:06:05,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16 conditions, 6 events. 0/6 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 3/9 useless extension candidates. Maximal degree in co-relation 0. Up to 6 conditions per place. [2023-11-19 08:06:05,021 INFO L140 encePairwiseOnDemand]: 172/189 looper letters, 4 selfloop transitions, 0 changer transitions 0/5 dead transitions. [2023-11-19 08:06:05,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 9 places, 5 transitions, 22 flow [2023-11-19 08:06:05,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 08:06:05,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 08:06:05,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 131 transitions. [2023-11-19 08:06:05,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34656084656084657 [2023-11-19 08:06:05,043 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 131 transitions. [2023-11-19 08:06:05,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 131 transitions. [2023-11-19 08:06:05,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:05,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 131 transitions. [2023-11-19 08:06:05,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 65.5) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:05,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:05,061 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:05,063 INFO L175 Difference]: Start difference. First operand has 25 places, 22 transitions, 48 flow. Second operand 2 states and 131 transitions. [2023-11-19 08:06:05,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 9 places, 5 transitions, 22 flow [2023-11-19 08:06:05,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 9 places, 5 transitions, 22 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 08:06:05,068 INFO L231 Difference]: Finished difference. Result has 9 places, 5 transitions, 14 flow [2023-11-19 08:06:05,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=14, PETRI_DIFFERENCE_MINUEND_PLACES=8, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=14, PETRI_PLACES=9, PETRI_TRANSITIONS=5} [2023-11-19 08:06:05,074 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, -16 predicate places. [2023-11-19 08:06:05,076 INFO L495 AbstractCegarLoop]: Abstraction has has 9 places, 5 transitions, 14 flow [2023-11-19 08:06:05,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 57.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:05,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:05,077 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-19 08:06:05,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:06:05,077 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-11-19 08:06:05,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:05,078 INFO L85 PathProgramCache]: Analyzing trace with hash -809955150, now seen corresponding path program 1 times [2023-11-19 08:06:05,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:05,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625759886] [2023-11-19 08:06:05,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:05,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:05,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:06:05,130 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:06:05,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:06:05,189 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:06:05,190 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 08:06:05,191 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2023-11-19 08:06:05,193 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (29 of 31 remaining) [2023-11-19 08:06:05,194 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (28 of 31 remaining) [2023-11-19 08:06:05,194 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (27 of 31 remaining) [2023-11-19 08:06:05,195 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 31 remaining) [2023-11-19 08:06:05,195 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 31 remaining) [2023-11-19 08:06:05,196 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (24 of 31 remaining) [2023-11-19 08:06:05,196 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (23 of 31 remaining) [2023-11-19 08:06:05,196 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (22 of 31 remaining) [2023-11-19 08:06:05,197 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (21 of 31 remaining) [2023-11-19 08:06:05,198 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (20 of 31 remaining) [2023-11-19 08:06:05,198 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (19 of 31 remaining) [2023-11-19 08:06:05,199 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (18 of 31 remaining) [2023-11-19 08:06:05,199 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (17 of 31 remaining) [2023-11-19 08:06:05,200 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (16 of 31 remaining) [2023-11-19 08:06:05,200 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (15 of 31 remaining) [2023-11-19 08:06:05,200 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 31 remaining) [2023-11-19 08:06:05,201 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 31 remaining) [2023-11-19 08:06:05,205 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 31 remaining) [2023-11-19 08:06:05,206 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 31 remaining) [2023-11-19 08:06:05,207 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 31 remaining) [2023-11-19 08:06:05,207 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (9 of 31 remaining) [2023-11-19 08:06:05,208 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (8 of 31 remaining) [2023-11-19 08:06:05,208 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (7 of 31 remaining) [2023-11-19 08:06:05,208 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (6 of 31 remaining) [2023-11-19 08:06:05,209 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (5 of 31 remaining) [2023-11-19 08:06:05,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (4 of 31 remaining) [2023-11-19 08:06:05,214 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (3 of 31 remaining) [2023-11-19 08:06:05,214 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (2 of 31 remaining) [2023-11-19 08:06:05,215 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (1 of 31 remaining) [2023-11-19 08:06:05,215 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (0 of 31 remaining) [2023-11-19 08:06:05,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 08:06:05,215 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-19 08:06:05,219 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 08:06:05,219 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 08:06:05,264 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 08:06:05,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 134 transitions, 278 flow [2023-11-19 08:06:05,324 INFO L124 PetriNetUnfolderBase]: 9/158 cut-off events. [2023-11-19 08:06:05,324 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 08:06:05,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 158 events. 9/158 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 403 event pairs, 0 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 119. Up to 6 conditions per place. [2023-11-19 08:06:05,328 INFO L82 GeneralOperation]: Start removeDead. Operand has 132 places, 134 transitions, 278 flow [2023-11-19 08:06:05,330 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 134 transitions, 278 flow [2023-11-19 08:06:05,331 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:06:05,331 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 132 places, 134 transitions, 278 flow [2023-11-19 08:06:05,331 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 132 places, 134 transitions, 278 flow [2023-11-19 08:06:05,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 134 transitions, 278 flow [2023-11-19 08:06:05,359 INFO L124 PetriNetUnfolderBase]: 9/158 cut-off events. [2023-11-19 08:06:05,359 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 08:06:05,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 158 events. 9/158 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 403 event pairs, 0 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 119. Up to 6 conditions per place. [2023-11-19 08:06:05,369 INFO L119 LiptonReduction]: Number of co-enabled transitions 8692 [2023-11-19 08:06:06,540 INFO L134 LiptonReduction]: Checked pairs total: 38761 [2023-11-19 08:06:06,540 INFO L136 LiptonReduction]: Total number of compositions: 85 [2023-11-19 08:06:06,543 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:06:06,550 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;@47ccd51e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:06:06,550 INFO L358 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2023-11-19 08:06:06,551 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:06:06,552 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-11-19 08:06:06,552 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:06:06,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:06,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 08:06:06,552 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 42 more)] === [2023-11-19 08:06:06,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:06,553 INFO L85 PathProgramCache]: Analyzing trace with hash 25851319, now seen corresponding path program 1 times [2023-11-19 08:06:06,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:06,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892245072] [2023-11-19 08:06:06,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:06,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:06,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:06,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:06,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:06,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892245072] [2023-11-19 08:06:06,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892245072] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:06,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:06,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:06:06,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422198163] [2023-11-19 08:06:06,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:06,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 08:06:06,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:06,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 08:06:06,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:06:06,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 219 [2023-11-19 08:06:06,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 78 transitions, 166 flow. Second operand has 2 states, 2 states have (on average 88.0) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:06,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:06,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 219 [2023-11-19 08:06:06,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:06,811 INFO L124 PetriNetUnfolderBase]: 386/886 cut-off events. [2023-11-19 08:06:06,811 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2023-11-19 08:06:06,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1577 conditions, 886 events. 386/886 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 5385 event pairs, 340 based on Foata normal form. 46/841 useless extension candidates. Maximal degree in co-relation 1006. Up to 653 conditions per place. [2023-11-19 08:06:06,823 INFO L140 encePairwiseOnDemand]: 194/219 looper letters, 26 selfloop transitions, 0 changer transitions 0/53 dead transitions. [2023-11-19 08:06:06,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 53 transitions, 168 flow [2023-11-19 08:06:06,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 08:06:06,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 08:06:06,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 223 transitions. [2023-11-19 08:06:06,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5091324200913242 [2023-11-19 08:06:06,831 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 223 transitions. [2023-11-19 08:06:06,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 223 transitions. [2023-11-19 08:06:06,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:06,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 223 transitions. [2023-11-19 08:06:06,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 111.5) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:06,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 219.0) internal successors, (657), 3 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:06,840 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 219.0) internal successors, (657), 3 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:06,840 INFO L175 Difference]: Start difference. First operand has 81 places, 78 transitions, 166 flow. Second operand 2 states and 223 transitions. [2023-11-19 08:06:06,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 53 transitions, 168 flow [2023-11-19 08:06:06,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 53 transitions, 168 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 08:06:06,844 INFO L231 Difference]: Finished difference. Result has 57 places, 53 transitions, 116 flow [2023-11-19 08:06:06,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=116, PETRI_PLACES=57, PETRI_TRANSITIONS=53} [2023-11-19 08:06:06,845 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -24 predicate places. [2023-11-19 08:06:06,845 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 53 transitions, 116 flow [2023-11-19 08:06:06,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 88.0) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:06,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:06,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 08:06:06,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 08:06:06,846 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 42 more)] === [2023-11-19 08:06:06,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:06,847 INFO L85 PathProgramCache]: Analyzing trace with hash -926665321, now seen corresponding path program 1 times [2023-11-19 08:06:06,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:06,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492446760] [2023-11-19 08:06:06,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:06,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:06,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:06,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:06,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:06,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492446760] [2023-11-19 08:06:06,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492446760] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:06,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:06,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:06:06,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059738831] [2023-11-19 08:06:06,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:06,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:06:06,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:06,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:06:06,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:06:06,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 219 [2023-11-19 08:06:06,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 53 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:06,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:06,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 219 [2023-11-19 08:06:06,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:07,339 INFO L124 PetriNetUnfolderBase]: 1038/2121 cut-off events. [2023-11-19 08:06:07,340 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2023-11-19 08:06:07,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3999 conditions, 2121 events. 1038/2121 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 14684 event pairs, 353 based on Foata normal form. 0/2024 useless extension candidates. Maximal degree in co-relation 3994. Up to 1203 conditions per place. [2023-11-19 08:06:07,358 INFO L140 encePairwiseOnDemand]: 203/219 looper letters, 60 selfloop transitions, 12 changer transitions 0/86 dead transitions. [2023-11-19 08:06:07,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 86 transitions, 331 flow [2023-11-19 08:06:07,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:06:07,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:06:07,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 286 transitions. [2023-11-19 08:06:07,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4353120243531202 [2023-11-19 08:06:07,361 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 286 transitions. [2023-11-19 08:06:07,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 286 transitions. [2023-11-19 08:06:07,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:07,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 286 transitions. [2023-11-19 08:06:07,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:07,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 219.0) internal successors, (876), 4 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:07,366 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 219.0) internal successors, (876), 4 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:07,366 INFO L175 Difference]: Start difference. First operand has 57 places, 53 transitions, 116 flow. Second operand 3 states and 286 transitions. [2023-11-19 08:06:07,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 86 transitions, 331 flow [2023-11-19 08:06:07,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 86 transitions, 331 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 08:06:07,369 INFO L231 Difference]: Finished difference. Result has 61 places, 65 transitions, 220 flow [2023-11-19 08:06:07,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=61, PETRI_TRANSITIONS=65} [2023-11-19 08:06:07,371 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -20 predicate places. [2023-11-19 08:06:07,371 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 65 transitions, 220 flow [2023-11-19 08:06:07,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:07,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:07,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:07,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 08:06:07,372 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 42 more)] === [2023-11-19 08:06:07,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:07,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1153243971, now seen corresponding path program 1 times [2023-11-19 08:06:07,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:07,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556942994] [2023-11-19 08:06:07,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:07,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:07,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:07,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:07,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:07,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556942994] [2023-11-19 08:06:07,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556942994] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:07,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:07,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:06:07,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065774086] [2023-11-19 08:06:07,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:07,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:06:07,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:07,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:06:07,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:06:07,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 219 [2023-11-19 08:06:07,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 65 transitions, 220 flow. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:07,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:07,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 219 [2023-11-19 08:06:07,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:07,802 INFO L124 PetriNetUnfolderBase]: 983/2075 cut-off events. [2023-11-19 08:06:07,803 INFO L125 PetriNetUnfolderBase]: For 633/657 co-relation queries the response was YES. [2023-11-19 08:06:07,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4614 conditions, 2075 events. 983/2075 cut-off events. For 633/657 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 14678 event pairs, 655 based on Foata normal form. 6/1940 useless extension candidates. Maximal degree in co-relation 4607. Up to 1466 conditions per place. [2023-11-19 08:06:07,823 INFO L140 encePairwiseOnDemand]: 211/219 looper letters, 49 selfloop transitions, 11 changer transitions 0/85 dead transitions. [2023-11-19 08:06:07,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 85 transitions, 411 flow [2023-11-19 08:06:07,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:06:07,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:06:07,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 266 transitions. [2023-11-19 08:06:07,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4048706240487062 [2023-11-19 08:06:07,825 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 266 transitions. [2023-11-19 08:06:07,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 266 transitions. [2023-11-19 08:06:07,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:07,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 266 transitions. [2023-11-19 08:06:07,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:07,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 219.0) internal successors, (876), 4 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:07,830 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 219.0) internal successors, (876), 4 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:07,830 INFO L175 Difference]: Start difference. First operand has 61 places, 65 transitions, 220 flow. Second operand 3 states and 266 transitions. [2023-11-19 08:06:07,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 85 transitions, 411 flow [2023-11-19 08:06:07,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 85 transitions, 377 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:06:07,838 INFO L231 Difference]: Finished difference. Result has 63 places, 74 transitions, 294 flow [2023-11-19 08:06:07,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=294, PETRI_PLACES=63, PETRI_TRANSITIONS=74} [2023-11-19 08:06:07,839 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -18 predicate places. [2023-11-19 08:06:07,839 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 74 transitions, 294 flow [2023-11-19 08:06:07,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:07,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:07,840 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-19 08:06:07,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 08:06:07,840 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 42 more)] === [2023-11-19 08:06:07,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:07,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1024501664, now seen corresponding path program 1 times [2023-11-19 08:06:07,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:07,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294419786] [2023-11-19 08:06:07,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:07,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:07,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:06:07,854 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:06:07,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:06:07,869 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:06:07,869 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 08:06:07,869 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (45 of 46 remaining) [2023-11-19 08:06:07,870 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (44 of 46 remaining) [2023-11-19 08:06:07,870 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (43 of 46 remaining) [2023-11-19 08:06:07,870 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (42 of 46 remaining) [2023-11-19 08:06:07,870 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (41 of 46 remaining) [2023-11-19 08:06:07,870 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (40 of 46 remaining) [2023-11-19 08:06:07,870 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (39 of 46 remaining) [2023-11-19 08:06:07,871 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (38 of 46 remaining) [2023-11-19 08:06:07,871 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (37 of 46 remaining) [2023-11-19 08:06:07,871 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (36 of 46 remaining) [2023-11-19 08:06:07,871 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (35 of 46 remaining) [2023-11-19 08:06:07,871 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (34 of 46 remaining) [2023-11-19 08:06:07,871 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (33 of 46 remaining) [2023-11-19 08:06:07,872 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (32 of 46 remaining) [2023-11-19 08:06:07,872 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (31 of 46 remaining) [2023-11-19 08:06:07,872 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (30 of 46 remaining) [2023-11-19 08:06:07,872 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (29 of 46 remaining) [2023-11-19 08:06:07,872 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (28 of 46 remaining) [2023-11-19 08:06:07,872 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (27 of 46 remaining) [2023-11-19 08:06:07,873 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 46 remaining) [2023-11-19 08:06:07,873 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 46 remaining) [2023-11-19 08:06:07,873 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (24 of 46 remaining) [2023-11-19 08:06:07,873 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (23 of 46 remaining) [2023-11-19 08:06:07,873 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (22 of 46 remaining) [2023-11-19 08:06:07,873 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (21 of 46 remaining) [2023-11-19 08:06:07,874 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (20 of 46 remaining) [2023-11-19 08:06:07,874 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (19 of 46 remaining) [2023-11-19 08:06:07,874 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (18 of 46 remaining) [2023-11-19 08:06:07,874 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (17 of 46 remaining) [2023-11-19 08:06:07,874 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (16 of 46 remaining) [2023-11-19 08:06:07,874 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (15 of 46 remaining) [2023-11-19 08:06:07,875 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 46 remaining) [2023-11-19 08:06:07,875 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 46 remaining) [2023-11-19 08:06:07,875 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 46 remaining) [2023-11-19 08:06:07,875 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 46 remaining) [2023-11-19 08:06:07,875 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 46 remaining) [2023-11-19 08:06:07,875 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (9 of 46 remaining) [2023-11-19 08:06:07,876 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (8 of 46 remaining) [2023-11-19 08:06:07,876 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (7 of 46 remaining) [2023-11-19 08:06:07,876 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (6 of 46 remaining) [2023-11-19 08:06:07,876 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (5 of 46 remaining) [2023-11-19 08:06:07,876 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (4 of 46 remaining) [2023-11-19 08:06:07,876 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (3 of 46 remaining) [2023-11-19 08:06:07,877 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (2 of 46 remaining) [2023-11-19 08:06:07,877 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (1 of 46 remaining) [2023-11-19 08:06:07,877 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (0 of 46 remaining) [2023-11-19 08:06:07,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 08:06:07,877 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-19 08:06:07,878 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 08:06:07,878 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-19 08:06:07,907 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 08:06:07,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 185 places, 188 transitions, 394 flow [2023-11-19 08:06:07,944 INFO L124 PetriNetUnfolderBase]: 13/225 cut-off events. [2023-11-19 08:06:07,945 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-19 08:06:07,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238 conditions, 225 events. 13/225 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 735 event pairs, 0 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 172. Up to 8 conditions per place. [2023-11-19 08:06:07,949 INFO L82 GeneralOperation]: Start removeDead. Operand has 185 places, 188 transitions, 394 flow [2023-11-19 08:06:07,953 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 185 places, 188 transitions, 394 flow [2023-11-19 08:06:07,953 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:06:07,953 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 185 places, 188 transitions, 394 flow [2023-11-19 08:06:07,953 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 185 places, 188 transitions, 394 flow [2023-11-19 08:06:07,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 185 places, 188 transitions, 394 flow [2023-11-19 08:06:07,987 INFO L124 PetriNetUnfolderBase]: 13/225 cut-off events. [2023-11-19 08:06:07,987 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-19 08:06:07,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238 conditions, 225 events. 13/225 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 735 event pairs, 0 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 172. Up to 8 conditions per place. [2023-11-19 08:06:08,006 INFO L119 LiptonReduction]: Number of co-enabled transitions 21624 [2023-11-19 08:06:09,423 INFO L134 LiptonReduction]: Checked pairs total: 103762 [2023-11-19 08:06:09,424 INFO L136 LiptonReduction]: Total number of compositions: 117 [2023-11-19 08:06:09,426 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:06:09,427 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;@47ccd51e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:06:09,427 INFO L358 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2023-11-19 08:06:09,429 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:06:09,429 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-11-19 08:06:09,429 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:06:09,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:09,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 08:06:09,430 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2023-11-19 08:06:09,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:09,431 INFO L85 PathProgramCache]: Analyzing trace with hash 36929590, now seen corresponding path program 1 times [2023-11-19 08:06:09,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:09,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632990550] [2023-11-19 08:06:09,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:09,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:09,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:09,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:09,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:09,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632990550] [2023-11-19 08:06:09,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632990550] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:09,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:09,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:06:09,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069019433] [2023-11-19 08:06:09,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:09,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 08:06:09,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:09,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 08:06:09,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:06:09,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 305 [2023-11-19 08:06:09,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 114 transitions, 246 flow. Second operand has 2 states, 2 states have (on average 119.0) internal successors, (238), 2 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:09,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:09,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 305 [2023-11-19 08:06:09,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:10,968 INFO L124 PetriNetUnfolderBase]: 7162/12146 cut-off events. [2023-11-19 08:06:10,968 INFO L125 PetriNetUnfolderBase]: For 784/784 co-relation queries the response was YES. [2023-11-19 08:06:10,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22760 conditions, 12146 events. 7162/12146 cut-off events. For 784/784 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 92181 event pairs, 6390 based on Foata normal form. 772/12001 useless extension candidates. Maximal degree in co-relation 12035. Up to 10091 conditions per place. [2023-11-19 08:06:11,156 INFO L140 encePairwiseOnDemand]: 268/305 looper letters, 38 selfloop transitions, 0 changer transitions 0/77 dead transitions. [2023-11-19 08:06:11,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 77 transitions, 248 flow [2023-11-19 08:06:11,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 08:06:11,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 08:06:11,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 309 transitions. [2023-11-19 08:06:11,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5065573770491804 [2023-11-19 08:06:11,159 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 309 transitions. [2023-11-19 08:06:11,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 309 transitions. [2023-11-19 08:06:11,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:11,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 309 transitions. [2023-11-19 08:06:11,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 154.5) internal successors, (309), 2 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:11,163 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 305.0) internal successors, (915), 3 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:11,164 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 305.0) internal successors, (915), 3 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:11,164 INFO L175 Difference]: Start difference. First operand has 118 places, 114 transitions, 246 flow. Second operand 2 states and 309 transitions. [2023-11-19 08:06:11,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 77 transitions, 248 flow [2023-11-19 08:06:11,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 77 transitions, 246 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-19 08:06:11,168 INFO L231 Difference]: Finished difference. Result has 82 places, 77 transitions, 170 flow [2023-11-19 08:06:11,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=81, 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=170, PETRI_PLACES=82, PETRI_TRANSITIONS=77} [2023-11-19 08:06:11,169 INFO L281 CegarLoopForPetriNet]: 118 programPoint places, -36 predicate places. [2023-11-19 08:06:11,169 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 77 transitions, 170 flow [2023-11-19 08:06:11,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 119.0) internal successors, (238), 2 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:11,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:11,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 08:06:11,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 08:06:11,170 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2023-11-19 08:06:11,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:11,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1129629176, now seen corresponding path program 1 times [2023-11-19 08:06:11,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:11,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812806623] [2023-11-19 08:06:11,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:11,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:11,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:11,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:11,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:11,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812806623] [2023-11-19 08:06:11,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812806623] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:11,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:11,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:06:11,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622272031] [2023-11-19 08:06:11,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:11,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:06:11,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:11,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:06:11,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:06:11,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 305 [2023-11-19 08:06:11,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 77 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:11,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:11,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 305 [2023-11-19 08:06:11,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:16,452 INFO L124 PetriNetUnfolderBase]: 31740/51529 cut-off events. [2023-11-19 08:06:16,453 INFO L125 PetriNetUnfolderBase]: For 1126/1126 co-relation queries the response was YES. [2023-11-19 08:06:16,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98612 conditions, 51529 events. 31740/51529 cut-off events. For 1126/1126 co-relation queries the response was YES. Maximal size of possible extension queue 1812. Compared 440122 event pairs, 11945 based on Foata normal form. 0/48795 useless extension candidates. Maximal degree in co-relation 98606. Up to 28649 conditions per place. [2023-11-19 08:06:16,870 INFO L140 encePairwiseOnDemand]: 281/305 looper letters, 84 selfloop transitions, 18 changer transitions 0/124 dead transitions. [2023-11-19 08:06:16,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 124 transitions, 478 flow [2023-11-19 08:06:16,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:06:16,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:06:16,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 387 transitions. [2023-11-19 08:06:16,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42295081967213116 [2023-11-19 08:06:16,873 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 387 transitions. [2023-11-19 08:06:16,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 387 transitions. [2023-11-19 08:06:16,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:16,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 387 transitions. [2023-11-19 08:06:16,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:16,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:16,879 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:16,880 INFO L175 Difference]: Start difference. First operand has 82 places, 77 transitions, 170 flow. Second operand 3 states and 387 transitions. [2023-11-19 08:06:16,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 124 transitions, 478 flow [2023-11-19 08:06:16,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 124 transitions, 478 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 08:06:16,888 INFO L231 Difference]: Finished difference. Result has 86 places, 95 transitions, 326 flow [2023-11-19 08:06:16,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=326, PETRI_PLACES=86, PETRI_TRANSITIONS=95} [2023-11-19 08:06:16,890 INFO L281 CegarLoopForPetriNet]: 118 programPoint places, -32 predicate places. [2023-11-19 08:06:16,890 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 95 transitions, 326 flow [2023-11-19 08:06:16,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:16,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:16,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:16,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 08:06:16,893 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2023-11-19 08:06:16,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:16,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1625402525, now seen corresponding path program 1 times [2023-11-19 08:06:16,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:16,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051414846] [2023-11-19 08:06:16,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:16,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:16,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:16,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:16,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:16,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051414846] [2023-11-19 08:06:16,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051414846] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:16,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:16,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:06:16,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845474403] [2023-11-19 08:06:16,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:16,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:06:16,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:16,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:06:16,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:06:17,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 305 [2023-11-19 08:06:17,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 95 transitions, 326 flow. Second operand has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:17,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:17,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 305 [2023-11-19 08:06:17,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:21,798 INFO L124 PetriNetUnfolderBase]: 30281/50305 cut-off events. [2023-11-19 08:06:21,798 INFO L125 PetriNetUnfolderBase]: For 21004/21705 co-relation queries the response was YES. [2023-11-19 08:06:21,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117238 conditions, 50305 events. 30281/50305 cut-off events. For 21004/21705 co-relation queries the response was YES. Maximal size of possible extension queue 1881. Compared 445561 event pairs, 18809 based on Foata normal form. 44/46571 useless extension candidates. Maximal degree in co-relation 117230. Up to 37496 conditions per place. [2023-11-19 08:06:22,558 INFO L140 encePairwiseOnDemand]: 293/305 looper letters, 74 selfloop transitions, 21 changer transitions 0/134 dead transitions. [2023-11-19 08:06:22,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 134 transitions, 658 flow [2023-11-19 08:06:22,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:06:22,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:06:22,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 372 transitions. [2023-11-19 08:06:22,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4065573770491803 [2023-11-19 08:06:22,563 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 372 transitions. [2023-11-19 08:06:22,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 372 transitions. [2023-11-19 08:06:22,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:22,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 372 transitions. [2023-11-19 08:06:22,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:22,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:22,572 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:22,572 INFO L175 Difference]: Start difference. First operand has 86 places, 95 transitions, 326 flow. Second operand 3 states and 372 transitions. [2023-11-19 08:06:22,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 134 transitions, 658 flow [2023-11-19 08:06:22,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 134 transitions, 604 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:06:22,645 INFO L231 Difference]: Finished difference. Result has 88 places, 114 transitions, 488 flow [2023-11-19 08:06:22,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=488, PETRI_PLACES=88, PETRI_TRANSITIONS=114} [2023-11-19 08:06:22,647 INFO L281 CegarLoopForPetriNet]: 118 programPoint places, -30 predicate places. [2023-11-19 08:06:22,647 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 114 transitions, 488 flow [2023-11-19 08:06:22,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:22,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:22,648 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:22,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 08:06:22,648 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2023-11-19 08:06:22,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:22,649 INFO L85 PathProgramCache]: Analyzing trace with hash -83121800, now seen corresponding path program 1 times [2023-11-19 08:06:22,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:22,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019395068] [2023-11-19 08:06:22,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:22,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:22,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:22,688 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 08:06:22,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:22,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019395068] [2023-11-19 08:06:22,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019395068] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:22,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:22,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:06:22,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696794884] [2023-11-19 08:06:22,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:22,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:06:22,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:22,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:06:22,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:06:22,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 305 [2023-11-19 08:06:22,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 114 transitions, 488 flow. Second operand has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:22,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:22,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 305 [2023-11-19 08:06:22,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:28,017 INFO L124 PetriNetUnfolderBase]: 34609/56374 cut-off events. [2023-11-19 08:06:28,017 INFO L125 PetriNetUnfolderBase]: For 42050/44523 co-relation queries the response was YES. [2023-11-19 08:06:28,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142985 conditions, 56374 events. 34609/56374 cut-off events. For 42050/44523 co-relation queries the response was YES. Maximal size of possible extension queue 2136. Compared 494503 event pairs, 19985 based on Foata normal form. 114/51239 useless extension candidates. Maximal degree in co-relation 142976. Up to 42562 conditions per place. [2023-11-19 08:06:28,434 INFO L140 encePairwiseOnDemand]: 293/305 looper letters, 92 selfloop transitions, 33 changer transitions 0/164 dead transitions. [2023-11-19 08:06:28,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 164 transitions, 977 flow [2023-11-19 08:06:28,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:06:28,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:06:28,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 372 transitions. [2023-11-19 08:06:28,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4065573770491803 [2023-11-19 08:06:28,442 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 372 transitions. [2023-11-19 08:06:28,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 372 transitions. [2023-11-19 08:06:28,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:28,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 372 transitions. [2023-11-19 08:06:28,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:28,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:28,449 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:28,450 INFO L175 Difference]: Start difference. First operand has 88 places, 114 transitions, 488 flow. Second operand 3 states and 372 transitions. [2023-11-19 08:06:28,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 164 transitions, 977 flow [2023-11-19 08:06:28,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 164 transitions, 909 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:06:28,675 INFO L231 Difference]: Finished difference. Result has 90 places, 143 transitions, 800 flow [2023-11-19 08:06:28,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=800, PETRI_PLACES=90, PETRI_TRANSITIONS=143} [2023-11-19 08:06:28,676 INFO L281 CegarLoopForPetriNet]: 118 programPoint places, -28 predicate places. [2023-11-19 08:06:28,676 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 143 transitions, 800 flow [2023-11-19 08:06:28,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:28,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:28,677 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-11-19 08:06:28,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 08:06:28,677 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2023-11-19 08:06:28,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:28,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1109615762, now seen corresponding path program 1 times [2023-11-19 08:06:28,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:28,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755816849] [2023-11-19 08:06:28,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:28,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:28,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:06:28,691 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:06:28,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:06:28,703 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:06:28,704 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 08:06:28,704 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (60 of 61 remaining) [2023-11-19 08:06:28,704 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (59 of 61 remaining) [2023-11-19 08:06:28,704 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (58 of 61 remaining) [2023-11-19 08:06:28,705 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (57 of 61 remaining) [2023-11-19 08:06:28,705 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (56 of 61 remaining) [2023-11-19 08:06:28,705 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (55 of 61 remaining) [2023-11-19 08:06:28,705 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (54 of 61 remaining) [2023-11-19 08:06:28,705 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (53 of 61 remaining) [2023-11-19 08:06:28,705 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (52 of 61 remaining) [2023-11-19 08:06:28,706 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (51 of 61 remaining) [2023-11-19 08:06:28,706 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (50 of 61 remaining) [2023-11-19 08:06:28,706 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (49 of 61 remaining) [2023-11-19 08:06:28,706 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (48 of 61 remaining) [2023-11-19 08:06:28,706 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (47 of 61 remaining) [2023-11-19 08:06:28,706 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (46 of 61 remaining) [2023-11-19 08:06:28,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (45 of 61 remaining) [2023-11-19 08:06:28,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (44 of 61 remaining) [2023-11-19 08:06:28,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (43 of 61 remaining) [2023-11-19 08:06:28,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (42 of 61 remaining) [2023-11-19 08:06:28,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (41 of 61 remaining) [2023-11-19 08:06:28,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (40 of 61 remaining) [2023-11-19 08:06:28,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (39 of 61 remaining) [2023-11-19 08:06:28,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (38 of 61 remaining) [2023-11-19 08:06:28,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (37 of 61 remaining) [2023-11-19 08:06:28,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (36 of 61 remaining) [2023-11-19 08:06:28,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (35 of 61 remaining) [2023-11-19 08:06:28,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (34 of 61 remaining) [2023-11-19 08:06:28,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (33 of 61 remaining) [2023-11-19 08:06:28,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (32 of 61 remaining) [2023-11-19 08:06:28,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (31 of 61 remaining) [2023-11-19 08:06:28,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (30 of 61 remaining) [2023-11-19 08:06:28,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (29 of 61 remaining) [2023-11-19 08:06:28,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (28 of 61 remaining) [2023-11-19 08:06:28,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (27 of 61 remaining) [2023-11-19 08:06:28,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 61 remaining) [2023-11-19 08:06:28,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 61 remaining) [2023-11-19 08:06:28,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (24 of 61 remaining) [2023-11-19 08:06:28,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (23 of 61 remaining) [2023-11-19 08:06:28,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (22 of 61 remaining) [2023-11-19 08:06:28,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (21 of 61 remaining) [2023-11-19 08:06:28,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (20 of 61 remaining) [2023-11-19 08:06:28,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (19 of 61 remaining) [2023-11-19 08:06:28,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (18 of 61 remaining) [2023-11-19 08:06:28,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (17 of 61 remaining) [2023-11-19 08:06:28,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (16 of 61 remaining) [2023-11-19 08:06:28,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (15 of 61 remaining) [2023-11-19 08:06:28,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 61 remaining) [2023-11-19 08:06:28,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 61 remaining) [2023-11-19 08:06:28,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 61 remaining) [2023-11-19 08:06:28,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 61 remaining) [2023-11-19 08:06:28,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 61 remaining) [2023-11-19 08:06:28,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (9 of 61 remaining) [2023-11-19 08:06:28,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (8 of 61 remaining) [2023-11-19 08:06:28,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (7 of 61 remaining) [2023-11-19 08:06:28,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (6 of 61 remaining) [2023-11-19 08:06:28,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (5 of 61 remaining) [2023-11-19 08:06:28,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (4 of 61 remaining) [2023-11-19 08:06:28,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (3 of 61 remaining) [2023-11-19 08:06:28,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (2 of 61 remaining) [2023-11-19 08:06:28,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (1 of 61 remaining) [2023-11-19 08:06:28,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (0 of 61 remaining) [2023-11-19 08:06:28,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 08:06:28,715 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-19 08:06:28,716 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 08:06:28,716 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-19 08:06:29,061 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 08:06:29,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 238 places, 242 transitions, 512 flow [2023-11-19 08:06:29,120 INFO L124 PetriNetUnfolderBase]: 17/292 cut-off events. [2023-11-19 08:06:29,121 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-19 08:06:29,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 311 conditions, 292 events. 17/292 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1090 event pairs, 0 based on Foata normal form. 0/210 useless extension candidates. Maximal degree in co-relation 233. Up to 10 conditions per place. [2023-11-19 08:06:29,124 INFO L82 GeneralOperation]: Start removeDead. Operand has 238 places, 242 transitions, 512 flow [2023-11-19 08:06:29,128 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 238 places, 242 transitions, 512 flow [2023-11-19 08:06:29,129 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:06:29,129 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 238 places, 242 transitions, 512 flow [2023-11-19 08:06:29,129 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 238 places, 242 transitions, 512 flow [2023-11-19 08:06:29,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 238 places, 242 transitions, 512 flow [2023-11-19 08:06:29,184 INFO L124 PetriNetUnfolderBase]: 17/292 cut-off events. [2023-11-19 08:06:29,184 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-19 08:06:29,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 311 conditions, 292 events. 17/292 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1090 event pairs, 0 based on Foata normal form. 0/210 useless extension candidates. Maximal degree in co-relation 233. Up to 10 conditions per place. [2023-11-19 08:06:29,209 INFO L119 LiptonReduction]: Number of co-enabled transitions 40280 [2023-11-19 08:06:30,885 INFO L134 LiptonReduction]: Checked pairs total: 200833 [2023-11-19 08:06:30,886 INFO L136 LiptonReduction]: Total number of compositions: 148 [2023-11-19 08:06:30,888 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:06:30,888 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;@47ccd51e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:06:30,889 INFO L358 AbstractCegarLoop]: Starting to check reachability of 76 error locations. [2023-11-19 08:06:30,890 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:06:30,890 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-11-19 08:06:30,890 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:06:30,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:30,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 08:06:30,891 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 72 more)] === [2023-11-19 08:06:30,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:30,891 INFO L85 PathProgramCache]: Analyzing trace with hash 50532324, now seen corresponding path program 1 times [2023-11-19 08:06:30,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:30,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25231232] [2023-11-19 08:06:30,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:30,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:30,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:30,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:30,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:30,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25231232] [2023-11-19 08:06:30,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25231232] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:30,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:30,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:06:30,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924539514] [2023-11-19 08:06:30,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:30,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 08:06:30,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:30,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 08:06:30,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:06:30,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 390 [2023-11-19 08:06:30,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 150 transitions, 328 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) [2023-11-19 08:06:30,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:30,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 390 [2023-11-19 08:06:30,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:46,641 INFO L124 PetriNetUnfolderBase]: 110980/164314 cut-off events. [2023-11-19 08:06:46,641 INFO L125 PetriNetUnfolderBase]: For 14762/14762 co-relation queries the response was YES. [2023-11-19 08:06:46,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 314684 conditions, 164314 events. 110980/164314 cut-off events. For 14762/14762 co-relation queries the response was YES. Maximal size of possible extension queue 4813. Compared 1404375 event pairs, 99560 based on Foata normal form. 11420/164622 useless extension candidates. Maximal degree in co-relation 40130. Up to 143191 conditions per place. [2023-11-19 08:06:48,006 INFO L140 encePairwiseOnDemand]: 341/390 looper letters, 50 selfloop transitions, 0 changer transitions 0/101 dead transitions. [2023-11-19 08:06:48,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 101 transitions, 330 flow [2023-11-19 08:06:48,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 08:06:48,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 08:06:48,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 395 transitions. [2023-11-19 08:06:48,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5064102564102564 [2023-11-19 08:06:48,009 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 395 transitions. [2023-11-19 08:06:48,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 395 transitions. [2023-11-19 08:06:48,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:48,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 395 transitions. [2023-11-19 08:06:48,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 197.5) internal successors, (395), 2 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:48,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 390.0) internal successors, (1170), 3 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:48,014 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 390.0) internal successors, (1170), 3 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:48,015 INFO L175 Difference]: Start difference. First operand has 155 places, 150 transitions, 328 flow. Second operand 2 states and 395 transitions. [2023-11-19 08:06:48,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 101 transitions, 330 flow [2023-11-19 08:06:48,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 101 transitions, 324 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-11-19 08:06:48,026 INFO L231 Difference]: Finished difference. Result has 107 places, 101 transitions, 224 flow [2023-11-19 08:06:48,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=224, PETRI_PLACES=107, PETRI_TRANSITIONS=101} [2023-11-19 08:06:48,027 INFO L281 CegarLoopForPetriNet]: 155 programPoint places, -48 predicate places. [2023-11-19 08:06:48,027 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 101 transitions, 224 flow [2023-11-19 08:06:48,027 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) [2023-11-19 08:06:48,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:48,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 08:06:48,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 08:06:48,028 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 72 more)] === [2023-11-19 08:06:48,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:48,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1316967846, now seen corresponding path program 1 times [2023-11-19 08:06:48,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:48,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094375503] [2023-11-19 08:06:48,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:48,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:48,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:48,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:48,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:48,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094375503] [2023-11-19 08:06:48,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094375503] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:48,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:48,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:06:48,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248308778] [2023-11-19 08:06:48,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:48,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:06:48,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:48,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:06:48,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:06:48,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 390 [2023-11-19 08:06:48,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 101 transitions, 224 flow. Second operand has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:48,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:48,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 390 [2023-11-19 08:06:48,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand