./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/05_tas.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01e2f46a-ffc0-4abf-b402-451afeb30dca/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01e2f46a-ffc0-4abf-b402-451afeb30dca/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01e2f46a-ffc0-4abf-b402-451afeb30dca/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01e2f46a-ffc0-4abf-b402-451afeb30dca/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/05_tas.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01e2f46a-ffc0-4abf-b402-451afeb30dca/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01e2f46a-ffc0-4abf-b402-451afeb30dca/bin/uautomizer-verify-uTZkv6EMXl --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 1ee4025da2c93fbd4be930880192a9e0c94d8979f3d9117e228b55f99542c3b0 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:12:08,069 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:12:08,184 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01e2f46a-ffc0-4abf-b402-451afeb30dca/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-12 02:12:08,189 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:12:08,191 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:12:08,222 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:12:08,224 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:12:08,225 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:12:08,226 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:12:08,231 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:12:08,232 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:12:08,233 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:12:08,233 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:12:08,234 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:12:08,235 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:12:08,235 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:12:08,236 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:12:08,236 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:12:08,236 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:12:08,237 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:12:08,237 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:12:08,238 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:12:08,238 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-12 02:12:08,239 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:12:08,239 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:12:08,240 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:12:08,240 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:12:08,240 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:12:08,241 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:12:08,241 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:12:08,242 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:12:08,242 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:12:08,243 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:12:08,243 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:12:08,243 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:12:08,243 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:12:08,244 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:12:08,244 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:12:08,244 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:12:08,244 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:12:08,245 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:12:08,245 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_01e2f46a-ffc0-4abf-b402-451afeb30dca/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01e2f46a-ffc0-4abf-b402-451afeb30dca/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ee4025da2c93fbd4be930880192a9e0c94d8979f3d9117e228b55f99542c3b0 [2023-11-12 02:12:08,602 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:12:08,633 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:12:08,636 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:12:08,637 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:12:08,637 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:12:08,639 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01e2f46a-ffc0-4abf-b402-451afeb30dca/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/pthread-ext/05_tas.i [2023-11-12 02:12:11,688 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:12:12,037 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:12:12,038 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01e2f46a-ffc0-4abf-b402-451afeb30dca/sv-benchmarks/c/pthread-ext/05_tas.i [2023-11-12 02:12:12,054 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01e2f46a-ffc0-4abf-b402-451afeb30dca/bin/uautomizer-verify-uTZkv6EMXl/data/5aa461de0/69f5d839f4614875ac1dae8cce8e41e9/FLAGeddfb126f [2023-11-12 02:12:12,071 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01e2f46a-ffc0-4abf-b402-451afeb30dca/bin/uautomizer-verify-uTZkv6EMXl/data/5aa461de0/69f5d839f4614875ac1dae8cce8e41e9 [2023-11-12 02:12:12,076 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:12:12,079 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:12:12,083 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:12:12,084 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:12:12,089 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:12:12,092 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:12:12" (1/1) ... [2023-11-12 02:12:12,093 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a5636b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:12, skipping insertion in model container [2023-11-12 02:12:12,093 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:12:12" (1/1) ... [2023-11-12 02:12:12,154 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:12:12,493 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:12:12,503 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:12:12,550 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:12:12,588 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:12:12,588 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:12 WrapperNode [2023-11-12 02:12:12,588 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:12:12,590 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:12:12,590 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:12:12,590 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:12:12,597 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:12" (1/1) ... [2023-11-12 02:12:12,616 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:12" (1/1) ... [2023-11-12 02:12:12,654 INFO L138 Inliner]: procedures = 169, calls = 29, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 180 [2023-11-12 02:12:12,655 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:12:12,656 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:12:12,656 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:12:12,656 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:12:12,666 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:12" (1/1) ... [2023-11-12 02:12:12,667 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:12" (1/1) ... [2023-11-12 02:12:12,672 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:12" (1/1) ... [2023-11-12 02:12:12,673 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:12" (1/1) ... [2023-11-12 02:12:12,689 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:12" (1/1) ... [2023-11-12 02:12:12,694 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:12" (1/1) ... [2023-11-12 02:12:12,697 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:12" (1/1) ... [2023-11-12 02:12:12,699 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:12" (1/1) ... [2023-11-12 02:12:12,703 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:12:12,704 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:12:12,704 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:12:12,704 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:12:12,705 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:12" (1/1) ... [2023-11-12 02:12:12,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:12:12,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01e2f46a-ffc0-4abf-b402-451afeb30dca/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:12:12,743 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01e2f46a-ffc0-4abf-b402-451afeb30dca/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:12:12,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01e2f46a-ffc0-4abf-b402-451afeb30dca/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:12:12,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:12:12,799 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-12 02:12:12,799 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-12 02:12:12,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:12:12,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:12:12,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:12:12,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:12:12,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:12:12,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:12:12,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:12:12,803 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:12:12,983 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:12:12,987 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:12:13,576 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:12:13,891 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:12:13,892 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-12 02:12:13,894 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:12:13 BoogieIcfgContainer [2023-11-12 02:12:13,895 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:12:13,900 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:12:13,900 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:12:13,904 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:12:13,905 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:12:12" (1/3) ... [2023-11-12 02:12:13,906 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e96b74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:12:13, skipping insertion in model container [2023-11-12 02:12:13,906 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:12" (2/3) ... [2023-11-12 02:12:13,907 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e96b74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:12:13, skipping insertion in model container [2023-11-12 02:12:13,907 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:12:13" (3/3) ... [2023-11-12 02:12:13,908 INFO L112 eAbstractionObserver]: Analyzing ICFG 05_tas.i [2023-11-12 02:12:13,922 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:12:13,931 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:12:13,932 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-11-12 02:12:13,932 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:12:14,072 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 02:12:14,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 154 transitions, 312 flow [2023-11-12 02:12:14,241 INFO L124 PetriNetUnfolderBase]: 13/165 cut-off events. [2023-11-12 02:12:14,242 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:12:14,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 165 events. 13/165 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 201 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 139. Up to 4 conditions per place. [2023-11-12 02:12:14,251 INFO L82 GeneralOperation]: Start removeDead. Operand has 145 places, 154 transitions, 312 flow [2023-11-12 02:12:14,263 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 145 places, 154 transitions, 312 flow [2023-11-12 02:12:14,268 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:12:14,290 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 145 places, 154 transitions, 312 flow [2023-11-12 02:12:14,295 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 145 places, 154 transitions, 312 flow [2023-11-12 02:12:14,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 154 transitions, 312 flow [2023-11-12 02:12:14,357 INFO L124 PetriNetUnfolderBase]: 13/165 cut-off events. [2023-11-12 02:12:14,357 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:12:14,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 165 events. 13/165 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 201 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 139. Up to 4 conditions per place. [2023-11-12 02:12:14,363 INFO L119 LiptonReduction]: Number of co-enabled transitions 3528 [2023-11-12 02:12:22,527 INFO L134 LiptonReduction]: Checked pairs total: 4385 [2023-11-12 02:12:22,529 INFO L136 LiptonReduction]: Total number of compositions: 177 [2023-11-12 02:12:22,581 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:12:22,605 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;@239ce933, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:12:22,605 INFO L358 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2023-11-12 02:12:22,609 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:12:22,609 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-11-12 02:12:22,609 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:12:22,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:22,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 02:12:22,611 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-11-12 02:12:22,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:22,617 INFO L85 PathProgramCache]: Analyzing trace with hash 759922878, now seen corresponding path program 1 times [2023-11-12 02:12:22,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:22,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170208438] [2023-11-12 02:12:22,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:22,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:22,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:22,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:12:22,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:22,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170208438] [2023-11-12 02:12:22,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170208438] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:22,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:22,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:12:22,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524890785] [2023-11-12 02:12:22,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:22,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:12:22,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:22,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:12:22,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:12:22,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 331 [2023-11-12 02:12:22,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 35 transitions, 74 flow. Second operand has 2 states, 2 states have (on average 133.0) internal successors, (266), 2 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) [2023-11-12 02:12:22,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:22,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 331 [2023-11-12 02:12:22,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:12:23,020 INFO L124 PetriNetUnfolderBase]: 23/57 cut-off events. [2023-11-12 02:12:23,027 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:12:23,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 57 events. 23/57 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 97 event pairs, 17 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 103. Up to 55 conditions per place. [2023-11-12 02:12:23,029 INFO L140 encePairwiseOnDemand]: 312/331 looper letters, 14 selfloop transitions, 0 changer transitions 0/16 dead transitions. [2023-11-12 02:12:23,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 16 transitions, 64 flow [2023-11-12 02:12:23,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:12:23,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-12 02:12:23,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 295 transitions. [2023-11-12 02:12:23,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44561933534743203 [2023-11-12 02:12:23,058 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 295 transitions. [2023-11-12 02:12:23,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 295 transitions. [2023-11-12 02:12:23,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:12:23,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 295 transitions. [2023-11-12 02:12:23,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 147.5) internal successors, (295), 2 states have internal predecessors, (295), 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) [2023-11-12 02:12:23,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 331.0) internal successors, (993), 3 states have internal predecessors, (993), 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) [2023-11-12 02:12:23,079 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 331.0) internal successors, (993), 3 states have internal predecessors, (993), 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) [2023-11-12 02:12:23,082 INFO L175 Difference]: Start difference. First operand has 34 places, 35 transitions, 74 flow. Second operand 2 states and 295 transitions. [2023-11-12 02:12:23,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 16 transitions, 64 flow [2023-11-12 02:12:23,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 16 transitions, 64 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:12:23,087 INFO L231 Difference]: Finished difference. Result has 18 places, 16 transitions, 36 flow [2023-11-12 02:12:23,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=36, PETRI_PLACES=18, PETRI_TRANSITIONS=16} [2023-11-12 02:12:23,094 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -16 predicate places. [2023-11-12 02:12:23,094 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 16 transitions, 36 flow [2023-11-12 02:12:23,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 133.0) internal successors, (266), 2 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) [2023-11-12 02:12:23,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:23,095 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-12 02:12:23,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:12:23,096 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-11-12 02:12:23,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:23,097 INFO L85 PathProgramCache]: Analyzing trace with hash 2082912669, now seen corresponding path program 1 times [2023-11-12 02:12:23,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:23,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993137460] [2023-11-12 02:12:23,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:23,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:23,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:12:23,163 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:12:23,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:12:23,217 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:12:23,217 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 02:12:23,219 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (32 of 33 remaining) [2023-11-12 02:12:23,221 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (31 of 33 remaining) [2023-11-12 02:12:23,222 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (30 of 33 remaining) [2023-11-12 02:12:23,222 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (29 of 33 remaining) [2023-11-12 02:12:23,223 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (28 of 33 remaining) [2023-11-12 02:12:23,223 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (27 of 33 remaining) [2023-11-12 02:12:23,224 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (26 of 33 remaining) [2023-11-12 02:12:23,224 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (25 of 33 remaining) [2023-11-12 02:12:23,225 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (24 of 33 remaining) [2023-11-12 02:12:23,225 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (23 of 33 remaining) [2023-11-12 02:12:23,226 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (22 of 33 remaining) [2023-11-12 02:12:23,226 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (21 of 33 remaining) [2023-11-12 02:12:23,227 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (20 of 33 remaining) [2023-11-12 02:12:23,228 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (19 of 33 remaining) [2023-11-12 02:12:23,228 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (18 of 33 remaining) [2023-11-12 02:12:23,229 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (17 of 33 remaining) [2023-11-12 02:12:23,230 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (16 of 33 remaining) [2023-11-12 02:12:23,230 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 33 remaining) [2023-11-12 02:12:23,236 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 33 remaining) [2023-11-12 02:12:23,236 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 33 remaining) [2023-11-12 02:12:23,237 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 33 remaining) [2023-11-12 02:12:23,238 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (11 of 33 remaining) [2023-11-12 02:12:23,239 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 33 remaining) [2023-11-12 02:12:23,241 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (9 of 33 remaining) [2023-11-12 02:12:23,241 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (8 of 33 remaining) [2023-11-12 02:12:23,242 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (7 of 33 remaining) [2023-11-12 02:12:23,242 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (6 of 33 remaining) [2023-11-12 02:12:23,242 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (5 of 33 remaining) [2023-11-12 02:12:23,243 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (4 of 33 remaining) [2023-11-12 02:12:23,243 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (3 of 33 remaining) [2023-11-12 02:12:23,243 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (2 of 33 remaining) [2023-11-12 02:12:23,244 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (1 of 33 remaining) [2023-11-12 02:12:23,245 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (0 of 33 remaining) [2023-11-12 02:12:23,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:12:23,249 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-12 02:12:23,252 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-12 02:12:23,252 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-12 02:12:23,364 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 02:12:23,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 263 places, 281 transitions, 572 flow [2023-11-12 02:12:23,465 INFO L124 PetriNetUnfolderBase]: 25/305 cut-off events. [2023-11-12 02:12:23,465 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:12:23,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 313 conditions, 305 events. 25/305 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 766 event pairs, 0 based on Foata normal form. 0/245 useless extension candidates. Maximal degree in co-relation 265. Up to 6 conditions per place. [2023-11-12 02:12:23,472 INFO L82 GeneralOperation]: Start removeDead. Operand has 263 places, 281 transitions, 572 flow [2023-11-12 02:12:23,479 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 263 places, 281 transitions, 572 flow [2023-11-12 02:12:23,479 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:12:23,479 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 263 places, 281 transitions, 572 flow [2023-11-12 02:12:23,480 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 263 places, 281 transitions, 572 flow [2023-11-12 02:12:23,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 263 places, 281 transitions, 572 flow [2023-11-12 02:12:23,589 INFO L124 PetriNetUnfolderBase]: 25/305 cut-off events. [2023-11-12 02:12:23,590 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:12:23,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 313 conditions, 305 events. 25/305 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 766 event pairs, 0 based on Foata normal form. 0/245 useless extension candidates. Maximal degree in co-relation 265. Up to 6 conditions per place. [2023-11-12 02:12:23,625 INFO L119 LiptonReduction]: Number of co-enabled transitions 39060 [2023-11-12 02:12:32,604 INFO L134 LiptonReduction]: Checked pairs total: 168740 [2023-11-12 02:12:32,605 INFO L136 LiptonReduction]: Total number of compositions: 174 [2023-11-12 02:12:32,609 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:12:32,616 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;@239ce933, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:12:32,617 INFO L358 AbstractCegarLoop]: Starting to check reachability of 49 error locations. [2023-11-12 02:12:32,619 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:12:32,620 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2023-11-12 02:12:32,620 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:12:32,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:32,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 02:12:32,621 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2023-11-12 02:12:32,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:32,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1498412708, now seen corresponding path program 1 times [2023-11-12 02:12:32,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:32,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095387388] [2023-11-12 02:12:32,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:32,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:32,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:32,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:12:32,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:32,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095387388] [2023-11-12 02:12:32,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095387388] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:32,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:32,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:12:32,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449571910] [2023-11-12 02:12:32,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:32,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:12:32,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:32,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:12:32,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:12:32,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 455 [2023-11-12 02:12:32,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 170 transitions, 350 flow. Second operand has 2 states, 2 states have (on average 239.5) internal successors, (479), 2 states have internal predecessors, (479), 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) [2023-11-12 02:12:32,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:32,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 455 [2023-11-12 02:12:32,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:12:33,608 INFO L124 PetriNetUnfolderBase]: 1249/3714 cut-off events. [2023-11-12 02:12:33,609 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2023-11-12 02:12:33,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5825 conditions, 3714 events. 1249/3714 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 29194 event pairs, 1090 based on Foata normal form. 423/3700 useless extension candidates. Maximal degree in co-relation 4319. Up to 2046 conditions per place. [2023-11-12 02:12:33,645 INFO L140 encePairwiseOnDemand]: 426/455 looper letters, 43 selfloop transitions, 0 changer transitions 0/133 dead transitions. [2023-11-12 02:12:33,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 133 transitions, 362 flow [2023-11-12 02:12:33,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:12:33,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-12 02:12:33,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 546 transitions. [2023-11-12 02:12:33,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2023-11-12 02:12:33,650 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 546 transitions. [2023-11-12 02:12:33,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 546 transitions. [2023-11-12 02:12:33,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:12:33,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 546 transitions. [2023-11-12 02:12:33,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 273.0) internal successors, (546), 2 states have internal predecessors, (546), 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) [2023-11-12 02:12:33,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 455.0) internal successors, (1365), 3 states have internal predecessors, (1365), 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) [2023-11-12 02:12:33,660 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 455.0) internal successors, (1365), 3 states have internal predecessors, (1365), 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) [2023-11-12 02:12:33,660 INFO L175 Difference]: Start difference. First operand has 157 places, 170 transitions, 350 flow. Second operand 2 states and 546 transitions. [2023-11-12 02:12:33,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 133 transitions, 362 flow [2023-11-12 02:12:33,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 133 transitions, 362 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:12:33,667 INFO L231 Difference]: Finished difference. Result has 135 places, 133 transitions, 276 flow [2023-11-12 02:12:33,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=455, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=276, PETRI_PLACES=135, PETRI_TRANSITIONS=133} [2023-11-12 02:12:33,669 INFO L281 CegarLoopForPetriNet]: 157 programPoint places, -22 predicate places. [2023-11-12 02:12:33,669 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 133 transitions, 276 flow [2023-11-12 02:12:33,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 239.5) internal successors, (479), 2 states have internal predecessors, (479), 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) [2023-11-12 02:12:33,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:33,670 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-12 02:12:33,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:12:33,671 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2023-11-12 02:12:33,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:33,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1149933916, now seen corresponding path program 1 times [2023-11-12 02:12:33,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:33,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100314336] [2023-11-12 02:12:33,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:33,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:33,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:12:33,711 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:12:33,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:12:33,727 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:12:33,728 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 02:12:33,728 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (48 of 49 remaining) [2023-11-12 02:12:33,728 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (47 of 49 remaining) [2023-11-12 02:12:33,729 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (46 of 49 remaining) [2023-11-12 02:12:33,729 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (45 of 49 remaining) [2023-11-12 02:12:33,729 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (44 of 49 remaining) [2023-11-12 02:12:33,729 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (43 of 49 remaining) [2023-11-12 02:12:33,730 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (42 of 49 remaining) [2023-11-12 02:12:33,730 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (41 of 49 remaining) [2023-11-12 02:12:33,730 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (40 of 49 remaining) [2023-11-12 02:12:33,730 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (39 of 49 remaining) [2023-11-12 02:12:33,731 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (38 of 49 remaining) [2023-11-12 02:12:33,731 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (37 of 49 remaining) [2023-11-12 02:12:33,731 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (36 of 49 remaining) [2023-11-12 02:12:33,731 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (35 of 49 remaining) [2023-11-12 02:12:33,731 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (34 of 49 remaining) [2023-11-12 02:12:33,732 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (33 of 49 remaining) [2023-11-12 02:12:33,732 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (32 of 49 remaining) [2023-11-12 02:12:33,732 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (31 of 49 remaining) [2023-11-12 02:12:33,732 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (30 of 49 remaining) [2023-11-12 02:12:33,733 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (29 of 49 remaining) [2023-11-12 02:12:33,733 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (28 of 49 remaining) [2023-11-12 02:12:33,733 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (27 of 49 remaining) [2023-11-12 02:12:33,733 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (26 of 49 remaining) [2023-11-12 02:12:33,734 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (25 of 49 remaining) [2023-11-12 02:12:33,734 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (24 of 49 remaining) [2023-11-12 02:12:33,734 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (23 of 49 remaining) [2023-11-12 02:12:33,734 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (22 of 49 remaining) [2023-11-12 02:12:33,734 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (21 of 49 remaining) [2023-11-12 02:12:33,735 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (20 of 49 remaining) [2023-11-12 02:12:33,735 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (19 of 49 remaining) [2023-11-12 02:12:33,735 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (18 of 49 remaining) [2023-11-12 02:12:33,735 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (17 of 49 remaining) [2023-11-12 02:12:33,736 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (16 of 49 remaining) [2023-11-12 02:12:33,736 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 49 remaining) [2023-11-12 02:12:33,736 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 49 remaining) [2023-11-12 02:12:33,736 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 49 remaining) [2023-11-12 02:12:33,737 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 49 remaining) [2023-11-12 02:12:33,737 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (11 of 49 remaining) [2023-11-12 02:12:33,737 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 49 remaining) [2023-11-12 02:12:33,737 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (9 of 49 remaining) [2023-11-12 02:12:33,737 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (8 of 49 remaining) [2023-11-12 02:12:33,738 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (7 of 49 remaining) [2023-11-12 02:12:33,738 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (6 of 49 remaining) [2023-11-12 02:12:33,738 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (5 of 49 remaining) [2023-11-12 02:12:33,738 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (4 of 49 remaining) [2023-11-12 02:12:33,739 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (3 of 49 remaining) [2023-11-12 02:12:33,739 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (2 of 49 remaining) [2023-11-12 02:12:33,739 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (1 of 49 remaining) [2023-11-12 02:12:33,739 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (0 of 49 remaining) [2023-11-12 02:12:33,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:12:33,740 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-12 02:12:33,741 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-12 02:12:33,741 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-12 02:12:33,851 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 02:12:33,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 381 places, 408 transitions, 834 flow [2023-11-12 02:12:33,984 INFO L124 PetriNetUnfolderBase]: 37/445 cut-off events. [2023-11-12 02:12:33,984 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-12 02:12:33,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 458 conditions, 445 events. 37/445 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1509 event pairs, 0 based on Foata normal form. 0/356 useless extension candidates. Maximal degree in co-relation 391. Up to 8 conditions per place. [2023-11-12 02:12:33,997 INFO L82 GeneralOperation]: Start removeDead. Operand has 381 places, 408 transitions, 834 flow [2023-11-12 02:12:34,008 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 381 places, 408 transitions, 834 flow [2023-11-12 02:12:34,009 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:12:34,009 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 381 places, 408 transitions, 834 flow [2023-11-12 02:12:34,009 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 381 places, 408 transitions, 834 flow [2023-11-12 02:12:34,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 381 places, 408 transitions, 834 flow [2023-11-12 02:12:34,134 INFO L124 PetriNetUnfolderBase]: 37/445 cut-off events. [2023-11-12 02:12:34,135 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-12 02:12:34,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 458 conditions, 445 events. 37/445 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1509 event pairs, 0 based on Foata normal form. 0/356 useless extension candidates. Maximal degree in co-relation 391. Up to 8 conditions per place. [2023-11-12 02:12:34,208 INFO L119 LiptonReduction]: Number of co-enabled transitions 106596 [2023-11-12 02:12:43,747 INFO L134 LiptonReduction]: Checked pairs total: 484333 [2023-11-12 02:12:43,748 INFO L136 LiptonReduction]: Total number of compositions: 251 [2023-11-12 02:12:43,750 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:12:43,751 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;@239ce933, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:12:43,751 INFO L358 AbstractCegarLoop]: Starting to check reachability of 65 error locations. [2023-11-12 02:12:43,754 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:12:43,755 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2023-11-12 02:12:43,755 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:12:43,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:43,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 02:12:43,756 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2023-11-12 02:12:43,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:43,756 INFO L85 PathProgramCache]: Analyzing trace with hash 377490858, now seen corresponding path program 1 times [2023-11-12 02:12:43,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:43,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416772074] [2023-11-12 02:12:43,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:43,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:43,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:43,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:12:43,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:43,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416772074] [2023-11-12 02:12:43,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416772074] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:43,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:43,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:12:43,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013145905] [2023-11-12 02:12:43,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:43,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:12:43,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:43,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:12:43,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:12:43,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 343 out of 659 [2023-11-12 02:12:43,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 250 transitions, 518 flow. Second operand has 2 states, 2 states have (on average 345.5) internal successors, (691), 2 states have internal predecessors, (691), 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) [2023-11-12 02:12:43,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:43,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 343 of 659 [2023-11-12 02:12:43,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:12:57,602 INFO L124 PetriNetUnfolderBase]: 39654/85337 cut-off events. [2023-11-12 02:12:57,603 INFO L125 PetriNetUnfolderBase]: For 2419/2419 co-relation queries the response was YES. [2023-11-12 02:12:57,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141696 conditions, 85337 events. 39654/85337 cut-off events. For 2419/2419 co-relation queries the response was YES. Maximal size of possible extension queue 1811. Compared 973139 event pairs, 35031 based on Foata normal form. 13364/87878 useless extension candidates. Maximal degree in co-relation 69877. Up to 54778 conditions per place. [2023-11-12 02:12:58,702 INFO L140 encePairwiseOnDemand]: 618/659 looper letters, 63 selfloop transitions, 0 changer transitions 0/200 dead transitions. [2023-11-12 02:12:58,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 200 transitions, 544 flow [2023-11-12 02:12:58,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:12:58,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-12 02:12:58,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 790 transitions. [2023-11-12 02:12:58,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5993930197268589 [2023-11-12 02:12:58,708 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 790 transitions. [2023-11-12 02:12:58,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 790 transitions. [2023-11-12 02:12:58,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:12:58,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 790 transitions. [2023-11-12 02:12:58,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 395.0) internal successors, (790), 2 states have internal predecessors, (790), 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) [2023-11-12 02:12:58,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 659.0) internal successors, (1977), 3 states have internal predecessors, (1977), 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) [2023-11-12 02:12:58,719 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 659.0) internal successors, (1977), 3 states have internal predecessors, (1977), 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) [2023-11-12 02:12:58,719 INFO L175 Difference]: Start difference. First operand has 232 places, 250 transitions, 518 flow. Second operand 2 states and 790 transitions. [2023-11-12 02:12:58,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 200 transitions, 544 flow [2023-11-12 02:12:58,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 200 transitions, 542 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-12 02:12:58,735 INFO L231 Difference]: Finished difference. Result has 202 places, 200 transitions, 416 flow [2023-11-12 02:12:58,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=416, PETRI_PLACES=202, PETRI_TRANSITIONS=200} [2023-11-12 02:12:58,739 INFO L281 CegarLoopForPetriNet]: 232 programPoint places, -30 predicate places. [2023-11-12 02:12:58,739 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 200 transitions, 416 flow [2023-11-12 02:12:58,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 345.5) internal successors, (691), 2 states have internal predecessors, (691), 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) [2023-11-12 02:12:58,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:58,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:58,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:12:58,741 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2023-11-12 02:12:58,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:58,742 INFO L85 PathProgramCache]: Analyzing trace with hash 699710099, now seen corresponding path program 1 times [2023-11-12 02:12:58,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:58,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729267344] [2023-11-12 02:12:58,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:58,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:58,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:59,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:12:59,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:59,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729267344] [2023-11-12 02:12:59,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729267344] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:59,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:59,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:12:59,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009407862] [2023-11-12 02:12:59,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:59,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:12:59,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:59,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:12:59,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:12:59,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 659 [2023-11-12 02:12:59,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 200 transitions, 416 flow. Second operand has 6 states, 6 states have (on average 316.6666666666667) internal successors, (1900), 6 states have internal predecessors, (1900), 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) [2023-11-12 02:12:59,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:59,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 659 [2023-11-12 02:12:59,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand