./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-divine/ring_2w1r-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version cf1a7837 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_a9ac0af7-5897-4895-a42f-5f1d7dcec654/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ac0af7-5897-4895-a42f-5f1d7dcec654/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_a9ac0af7-5897-4895-a42f-5f1d7dcec654/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ac0af7-5897-4895-a42f-5f1d7dcec654/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-divine/ring_2w1r-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ac0af7-5897-4895-a42f-5f1d7dcec654/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_a9ac0af7-5897-4895-a42f-5f1d7dcec654/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 37b8edad74269e9ff0decb0295cb9343b2467e698f16054f344bf342aab69b21 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:33:03,045 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:33:03,123 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ac0af7-5897-4895-a42f-5f1d7dcec654/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-12 02:33:03,128 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:33:03,129 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:33:03,153 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:33:03,153 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:33:03,154 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:33:03,155 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:33:03,155 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:33:03,156 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:33:03,157 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:33:03,157 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:33:03,158 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:33:03,158 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:33:03,159 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:33:03,159 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:33:03,160 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:33:03,160 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:33:03,161 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:33:03,161 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:33:03,162 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:33:03,162 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-12 02:33:03,163 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:33:03,163 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:33:03,164 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:33:03,164 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:33:03,165 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:33:03,165 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:33:03,166 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:33:03,166 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:33:03,167 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:33:03,167 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:33:03,168 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:33:03,168 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:33:03,168 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:33:03,169 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:33:03,169 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:33:03,170 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:33:03,170 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:33:03,171 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:33:03,171 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_a9ac0af7-5897-4895-a42f-5f1d7dcec654/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ac0af7-5897-4895-a42f-5f1d7dcec654/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37b8edad74269e9ff0decb0295cb9343b2467e698f16054f344bf342aab69b21 [2023-11-12 02:33:03,434 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:33:03,460 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:33:03,463 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:33:03,466 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:33:03,466 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:33:03,467 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ac0af7-5897-4895-a42f-5f1d7dcec654/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/pthread-divine/ring_2w1r-2.i [2023-11-12 02:33:06,776 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:33:07,162 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:33:07,166 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ac0af7-5897-4895-a42f-5f1d7dcec654/sv-benchmarks/c/pthread-divine/ring_2w1r-2.i [2023-11-12 02:33:07,186 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ac0af7-5897-4895-a42f-5f1d7dcec654/bin/uautomizer-verify-uTZkv6EMXl/data/3644e6090/1af98c24845343a7a9d91d6d86ad5188/FLAG6614bdc78 [2023-11-12 02:33:07,204 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ac0af7-5897-4895-a42f-5f1d7dcec654/bin/uautomizer-verify-uTZkv6EMXl/data/3644e6090/1af98c24845343a7a9d91d6d86ad5188 [2023-11-12 02:33:07,210 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:33:07,212 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:33:07,214 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:33:07,214 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:33:07,224 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:33:07,228 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:33:07" (1/1) ... [2023-11-12 02:33:07,230 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3da0d1b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:07, skipping insertion in model container [2023-11-12 02:33:07,231 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:33:07" (1/1) ... [2023-11-12 02:33:07,317 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:33:07,548 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-12 02:33:08,087 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:33:08,098 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:33:08,119 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-12 02:33:08,194 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:33:08,274 WARN L672 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:33:08,282 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:33:08,283 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:08 WrapperNode [2023-11-12 02:33:08,283 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:33:08,284 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:33:08,285 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:33:08,285 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:33:08,293 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:08" (1/1) ... [2023-11-12 02:33:08,341 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:08" (1/1) ... [2023-11-12 02:33:08,430 INFO L138 Inliner]: procedures = 309, calls = 70, calls flagged for inlining = 17, calls inlined = 12, statements flattened = 350 [2023-11-12 02:33:08,431 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:33:08,431 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:33:08,432 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:33:08,432 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:33:08,442 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:08" (1/1) ... [2023-11-12 02:33:08,443 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:08" (1/1) ... [2023-11-12 02:33:08,453 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:08" (1/1) ... [2023-11-12 02:33:08,467 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:08" (1/1) ... [2023-11-12 02:33:08,536 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:08" (1/1) ... [2023-11-12 02:33:08,541 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:08" (1/1) ... [2023-11-12 02:33:08,545 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:08" (1/1) ... [2023-11-12 02:33:08,549 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:08" (1/1) ... [2023-11-12 02:33:08,556 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:33:08,557 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:33:08,557 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:33:08,557 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:33:08,558 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:08" (1/1) ... [2023-11-12 02:33:08,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:33:08,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ac0af7-5897-4895-a42f-5f1d7dcec654/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:33:08,599 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ac0af7-5897-4895-a42f-5f1d7dcec654/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:33:08,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ac0af7-5897-4895-a42f-5f1d7dcec654/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:33:08,655 INFO L130 BoogieDeclarations]: Found specification of procedure reader_two [2023-11-12 02:33:08,656 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_two [2023-11-12 02:33:08,656 INFO L130 BoogieDeclarations]: Found specification of procedure writer_fn [2023-11-12 02:33:08,656 INFO L138 BoogieDeclarations]: Found implementation of procedure writer_fn [2023-11-12 02:33:08,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:33:08,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:33:08,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:33:08,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:33:08,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:33:08,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:33:08,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:33:08,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:33:08,664 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 02:33:08,903 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:33:08,906 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:33:09,801 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:33:09,817 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:33:09,818 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-12 02:33:09,822 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:33:09 BoogieIcfgContainer [2023-11-12 02:33:09,822 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:33:09,826 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:33:09,826 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:33:09,831 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:33:09,831 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:33:07" (1/3) ... [2023-11-12 02:33:09,833 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f5c5705 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:33:09, skipping insertion in model container [2023-11-12 02:33:09,833 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:08" (2/3) ... [2023-11-12 02:33:09,834 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f5c5705 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:33:09, skipping insertion in model container [2023-11-12 02:33:09,834 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:33:09" (3/3) ... [2023-11-12 02:33:09,836 INFO L112 eAbstractionObserver]: Analyzing ICFG ring_2w1r-2.i [2023-11-12 02:33:09,848 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:33:09,863 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:33:09,864 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2023-11-12 02:33:09,864 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:33:10,128 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-12 02:33:10,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 393 places, 407 transitions, 828 flow [2023-11-12 02:33:10,520 INFO L124 PetriNetUnfolderBase]: 21/405 cut-off events. [2023-11-12 02:33:10,521 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:33:10,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 414 conditions, 405 events. 21/405 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 985 event pairs, 0 based on Foata normal form. 0/358 useless extension candidates. Maximal degree in co-relation 344. Up to 2 conditions per place. [2023-11-12 02:33:10,540 INFO L82 GeneralOperation]: Start removeDead. Operand has 393 places, 407 transitions, 828 flow [2023-11-12 02:33:10,554 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 380 places, 394 transitions, 797 flow [2023-11-12 02:33:10,557 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:33:10,572 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 380 places, 394 transitions, 797 flow [2023-11-12 02:33:10,574 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 380 places, 394 transitions, 797 flow [2023-11-12 02:33:10,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 380 places, 394 transitions, 797 flow [2023-11-12 02:33:10,730 INFO L124 PetriNetUnfolderBase]: 21/394 cut-off events. [2023-11-12 02:33:10,730 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:33:10,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 402 conditions, 394 events. 21/394 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 943 event pairs, 0 based on Foata normal form. 0/347 useless extension candidates. Maximal degree in co-relation 344. Up to 2 conditions per place. [2023-11-12 02:33:10,797 INFO L119 LiptonReduction]: Number of co-enabled transitions 72100 [2023-11-12 02:33:25,223 INFO L134 LiptonReduction]: Checked pairs total: 412797 [2023-11-12 02:33:25,224 INFO L136 LiptonReduction]: Total number of compositions: 243 [2023-11-12 02:33:25,243 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:33:25,251 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;@4dd54d2f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:33:25,253 INFO L358 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2023-11-12 02:33:25,261 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:33:25,261 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-12 02:33:25,261 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:33:25,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:33:25,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-12 02:33:25,264 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [reader_twoErr0ASSERT_VIOLATIONDATA_RACE, reader_twoErr1ASSERT_VIOLATIONDATA_RACE, reader_twoErr2ASSERT_VIOLATIONDATA_RACE (and 41 more)] === [2023-11-12 02:33:25,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:33:25,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1428, now seen corresponding path program 1 times [2023-11-12 02:33:25,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:33:25,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25080202] [2023-11-12 02:33:25,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:33:25,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:33:25,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:33:25,417 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 02:33:25,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:33:25,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25080202] [2023-11-12 02:33:25,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25080202] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:33:25,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:33:25,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-12 02:33:25,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17018055] [2023-11-12 02:33:25,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:33:25,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:33:25,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:33:25,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:33:25,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:33:25,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 650 [2023-11-12 02:33:25,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 202 transitions, 413 flow. Second operand has 2 states, 2 states have (on average 389.5) internal successors, (779), 2 states have internal predecessors, (779), 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 02:33:25,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:33:25,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 650 [2023-11-12 02:33:25,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:33:28,388 INFO L124 PetriNetUnfolderBase]: 4113/12572 cut-off events. [2023-11-12 02:33:28,403 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2023-11-12 02:33:28,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18412 conditions, 12572 events. 4113/12572 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 123508 event pairs, 3020 based on Foata normal form. 805/11657 useless extension candidates. Maximal degree in co-relation 18227. Up to 5788 conditions per place. [2023-11-12 02:33:28,603 INFO L140 encePairwiseOnDemand]: 641/650 looper letters, 46 selfloop transitions, 0 changer transitions 0/192 dead transitions. [2023-11-12 02:33:28,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 192 transitions, 485 flow [2023-11-12 02:33:28,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:33:28,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-12 02:33:28,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 833 transitions. [2023-11-12 02:33:28,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6407692307692308 [2023-11-12 02:33:28,631 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 833 transitions. [2023-11-12 02:33:28,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 833 transitions. [2023-11-12 02:33:28,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:33:28,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 833 transitions. [2023-11-12 02:33:28,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 416.5) internal successors, (833), 2 states have internal predecessors, (833), 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 02:33:28,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 650.0) internal successors, (1950), 3 states have internal predecessors, (1950), 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 02:33:28,689 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 650.0) internal successors, (1950), 3 states have internal predecessors, (1950), 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 02:33:28,691 INFO L175 Difference]: Start difference. First operand has 195 places, 202 transitions, 413 flow. Second operand 2 states and 833 transitions. [2023-11-12 02:33:28,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 192 transitions, 485 flow [2023-11-12 02:33:28,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 192 transitions, 480 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-12 02:33:28,720 INFO L231 Difference]: Finished difference. Result has 190 places, 192 transitions, 388 flow [2023-11-12 02:33:28,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=650, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=388, PETRI_PLACES=190, PETRI_TRANSITIONS=192} [2023-11-12 02:33:28,727 INFO L281 CegarLoopForPetriNet]: 195 programPoint places, -5 predicate places. [2023-11-12 02:33:28,728 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 192 transitions, 388 flow [2023-11-12 02:33:28,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 389.5) internal successors, (779), 2 states have internal predecessors, (779), 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 02:33:28,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:33:28,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:33:28,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:33:28,730 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [reader_twoErr0ASSERT_VIOLATIONDATA_RACE, reader_twoErr1ASSERT_VIOLATIONDATA_RACE, reader_twoErr2ASSERT_VIOLATIONDATA_RACE (and 41 more)] === [2023-11-12 02:33:28,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:33:28,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1056940223, now seen corresponding path program 1 times [2023-11-12 02:33:28,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:33:28,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458585402] [2023-11-12 02:33:28,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:33:28,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:33:28,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:33:29,015 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 02:33:29,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:33:29,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458585402] [2023-11-12 02:33:29,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458585402] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:33:29,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:33:29,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:33:29,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203116143] [2023-11-12 02:33:29,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:33:29,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:33:29,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:33:29,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:33:29,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:33:29,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 383 out of 650 [2023-11-12 02:33:29,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 192 transitions, 388 flow. Second operand has 3 states, 3 states have (on average 385.0) internal successors, (1155), 3 states have internal predecessors, (1155), 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 02:33:29,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:33:29,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 383 of 650 [2023-11-12 02:33:29,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:33:34,667 INFO L124 PetriNetUnfolderBase]: 7298/23839 cut-off events. [2023-11-12 02:33:34,668 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-12 02:33:34,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34239 conditions, 23839 events. 7298/23839 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 263275 event pairs, 3020 based on Foata normal form. 0/20518 useless extension candidates. Maximal degree in co-relation 34236. Up to 5788 conditions per place. [2023-11-12 02:33:34,906 INFO L140 encePairwiseOnDemand]: 647/650 looper letters, 82 selfloop transitions, 2 changer transitions 0/230 dead transitions. [2023-11-12 02:33:34,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 230 transitions, 632 flow [2023-11-12 02:33:34,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:33:34,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:33:34,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1234 transitions. [2023-11-12 02:33:34,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6328205128205128 [2023-11-12 02:33:34,915 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1234 transitions. [2023-11-12 02:33:34,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1234 transitions. [2023-11-12 02:33:34,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:33:34,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1234 transitions. [2023-11-12 02:33:34,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 411.3333333333333) internal successors, (1234), 3 states have internal predecessors, (1234), 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 02:33:34,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 650.0) internal successors, (2600), 4 states have internal predecessors, (2600), 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 02:33:34,935 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 650.0) internal successors, (2600), 4 states have internal predecessors, (2600), 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 02:33:34,936 INFO L175 Difference]: Start difference. First operand has 190 places, 192 transitions, 388 flow. Second operand 3 states and 1234 transitions. [2023-11-12 02:33:34,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 230 transitions, 632 flow [2023-11-12 02:33:34,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 230 transitions, 632 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:33:34,951 INFO L231 Difference]: Finished difference. Result has 193 places, 193 transitions, 400 flow [2023-11-12 02:33:34,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=650, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=400, PETRI_PLACES=193, PETRI_TRANSITIONS=193} [2023-11-12 02:33:34,957 INFO L281 CegarLoopForPetriNet]: 195 programPoint places, -2 predicate places. [2023-11-12 02:33:34,957 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 193 transitions, 400 flow [2023-11-12 02:33:34,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 385.0) internal successors, (1155), 3 states have internal predecessors, (1155), 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 02:33:34,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:33:34,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:33:34,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:33:34,969 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [reader_twoErr0ASSERT_VIOLATIONDATA_RACE, reader_twoErr1ASSERT_VIOLATIONDATA_RACE, reader_twoErr2ASSERT_VIOLATIONDATA_RACE (and 41 more)] === [2023-11-12 02:33:34,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:33:34,975 INFO L85 PathProgramCache]: Analyzing trace with hash 945798391, now seen corresponding path program 1 times [2023-11-12 02:33:34,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:33:34,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606724844] [2023-11-12 02:33:34,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:33:34,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:33:35,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:33:35,542 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 02:33:35,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:33:35,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606724844] [2023-11-12 02:33:35,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606724844] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:33:35,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:33:35,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:33:35,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442443715] [2023-11-12 02:33:35,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:33:35,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:33:35,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:33:35,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:33:35,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:33:37,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 335 out of 650 [2023-11-12 02:33:37,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 193 transitions, 400 flow. Second operand has 6 states, 6 states have (on average 336.8333333333333) internal successors, (2021), 6 states have internal predecessors, (2021), 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 02:33:37,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:33:37,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 335 of 650 [2023-11-12 02:33:37,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand