./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-race-challenges/thread-join-binomial-race.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_32e51174-1972-41b0-86df-1af7cd7601d6/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e51174-1972-41b0-86df-1af7cd7601d6/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_32e51174-1972-41b0-86df-1af7cd7601d6/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e51174-1972-41b0-86df-1af7cd7601d6/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-race-challenges/thread-join-binomial-race.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e51174-1972-41b0-86df-1af7cd7601d6/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_32e51174-1972-41b0-86df-1af7cd7601d6/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 f3721357e68fd557f222f8a0ce5068ab4a46e5f8573d31ce219014656501246c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:09:19,769 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:09:19,887 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e51174-1972-41b0-86df-1af7cd7601d6/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-12 02:09:19,894 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:09:19,894 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:09:19,921 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:09:19,922 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:09:19,922 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:09:19,923 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:09:19,924 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:09:19,925 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:09:19,926 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:09:19,926 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:09:19,927 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:09:19,927 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:09:19,928 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:09:19,929 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:09:19,929 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:09:19,930 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:09:19,930 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:09:19,931 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:09:19,933 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:09:19,933 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-12 02:09:19,934 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:09:19,934 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:09:19,935 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:09:19,935 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:09:19,936 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:09:19,937 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:09:19,937 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:09:19,939 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:09:19,939 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:09:19,939 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:09:19,940 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:09:19,940 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:09:19,940 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:09:19,941 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:09:19,941 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:09:19,941 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:09:19,941 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:09:19,942 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:09:19,942 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_32e51174-1972-41b0-86df-1af7cd7601d6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e51174-1972-41b0-86df-1af7cd7601d6/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f3721357e68fd557f222f8a0ce5068ab4a46e5f8573d31ce219014656501246c [2023-11-12 02:09:20,260 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:09:20,297 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:09:20,300 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:09:20,302 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:09:20,303 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:09:20,304 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e51174-1972-41b0-86df-1af7cd7601d6/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/pthread-race-challenges/thread-join-binomial-race.i [2023-11-12 02:09:23,639 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:09:24,111 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:09:24,112 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e51174-1972-41b0-86df-1af7cd7601d6/sv-benchmarks/c/pthread-race-challenges/thread-join-binomial-race.i [2023-11-12 02:09:24,136 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e51174-1972-41b0-86df-1af7cd7601d6/bin/uautomizer-verify-uTZkv6EMXl/data/2d2a58b83/6cb3f5180c844edcbc9fba942e472c9b/FLAG25a239e40 [2023-11-12 02:09:24,155 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e51174-1972-41b0-86df-1af7cd7601d6/bin/uautomizer-verify-uTZkv6EMXl/data/2d2a58b83/6cb3f5180c844edcbc9fba942e472c9b [2023-11-12 02:09:24,165 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:09:24,167 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:09:24,172 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:09:24,172 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:09:24,179 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:09:24,180 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:09:24" (1/1) ... [2023-11-12 02:09:24,181 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41fbbb57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:24, skipping insertion in model container [2023-11-12 02:09:24,181 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:09:24" (1/1) ... [2023-11-12 02:09:24,243 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:09:24,465 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-12 02:09:24,882 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:09:24,905 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:09:24,935 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-12 02:09:25,003 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:09:25,091 WARN L672 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:09:25,100 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:09:25,101 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:25 WrapperNode [2023-11-12 02:09:25,101 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:09:25,103 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:09:25,103 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:09:25,103 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:09:25,113 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:25" (1/1) ... [2023-11-12 02:09:25,155 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:25" (1/1) ... [2023-11-12 02:09:25,195 INFO L138 Inliner]: procedures = 268, calls = 24, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 93 [2023-11-12 02:09:25,196 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:09:25,197 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:09:25,197 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:09:25,197 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:09:25,210 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:25" (1/1) ... [2023-11-12 02:09:25,210 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:25" (1/1) ... [2023-11-12 02:09:25,218 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:25" (1/1) ... [2023-11-12 02:09:25,218 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:25" (1/1) ... [2023-11-12 02:09:25,235 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:25" (1/1) ... [2023-11-12 02:09:25,240 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:25" (1/1) ... [2023-11-12 02:09:25,244 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:25" (1/1) ... [2023-11-12 02:09:25,246 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:25" (1/1) ... [2023-11-12 02:09:25,251 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:09:25,252 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:09:25,252 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:09:25,252 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:09:25,254 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:25" (1/1) ... [2023-11-12 02:09:25,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:09:25,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e51174-1972-41b0-86df-1af7cd7601d6/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:09:25,298 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e51174-1972-41b0-86df-1af7cd7601d6/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:09:25,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e51174-1972-41b0-86df-1af7cd7601d6/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:09:25,338 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 02:09:25,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:09:25,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-12 02:09:25,339 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:09:25,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:09:25,339 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-12 02:09:25,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 02:09:25,340 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:09:25,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 02:09:25,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:09:25,340 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2023-11-12 02:09:25,340 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2023-11-12 02:09:25,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:09:25,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:09:25,343 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 02:09:25,514 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:09:25,516 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:09:26,097 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:09:26,109 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:09:26,109 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-12 02:09:26,122 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:09:26 BoogieIcfgContainer [2023-11-12 02:09:26,122 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:09:26,126 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:09:26,126 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:09:26,130 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:09:26,131 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:09:24" (1/3) ... [2023-11-12 02:09:26,132 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d47304f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:09:26, skipping insertion in model container [2023-11-12 02:09:26,132 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:25" (2/3) ... [2023-11-12 02:09:26,132 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d47304f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:09:26, skipping insertion in model container [2023-11-12 02:09:26,132 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:09:26" (3/3) ... [2023-11-12 02:09:26,166 INFO L112 eAbstractionObserver]: Analyzing ICFG thread-join-binomial-race.i [2023-11-12 02:09:26,178 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:09:26,194 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:09:26,195 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-12 02:09:26,195 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:09:26,369 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-12 02:09:26,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 224 places, 238 transitions, 489 flow [2023-11-12 02:09:26,574 INFO L124 PetriNetUnfolderBase]: 10/203 cut-off events. [2023-11-12 02:09:26,574 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:09:26,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 203 events. 10/203 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 272 event pairs, 0 based on Foata normal form. 0/173 useless extension candidates. Maximal degree in co-relation 100. Up to 4 conditions per place. [2023-11-12 02:09:26,582 INFO L82 GeneralOperation]: Start removeDead. Operand has 224 places, 238 transitions, 489 flow [2023-11-12 02:09:26,590 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 164 places, 170 transitions, 347 flow [2023-11-12 02:09:26,595 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:09:26,609 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 164 places, 170 transitions, 347 flow [2023-11-12 02:09:26,614 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 164 places, 170 transitions, 347 flow [2023-11-12 02:09:26,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 170 transitions, 347 flow [2023-11-12 02:09:26,675 INFO L124 PetriNetUnfolderBase]: 10/198 cut-off events. [2023-11-12 02:09:26,675 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:09:26,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 198 events. 10/198 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 271 event pairs, 0 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 100. Up to 4 conditions per place. [2023-11-12 02:09:26,682 INFO L119 LiptonReduction]: Number of co-enabled transitions 4620 [2023-11-12 02:09:39,066 INFO L134 LiptonReduction]: Checked pairs total: 17372 [2023-11-12 02:09:39,066 INFO L136 LiptonReduction]: Total number of compositions: 172 [2023-11-12 02:09:39,088 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:09:39,097 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;@14dc2796, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:09:39,097 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-11-12 02:09:39,099 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:09:39,099 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-12 02:09:39,100 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:09:39,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:09:39,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-12 02:09:39,101 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2023-11-12 02:09:39,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:39,108 INFO L85 PathProgramCache]: Analyzing trace with hash 672, now seen corresponding path program 1 times [2023-11-12 02:09:39,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:39,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861811881] [2023-11-12 02:09:39,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:39,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:39,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:39,278 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 02:09:39,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:39,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861811881] [2023-11-12 02:09:39,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861811881] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:39,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:09:39,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-12 02:09:39,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139516482] [2023-11-12 02:09:39,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:39,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:09:39,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:39,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:09:39,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:09:39,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 410 [2023-11-12 02:09:39,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 103 flow. Second operand has 2 states, 2 states have (on average 228.5) internal successors, (457), 2 states have internal predecessors, (457), 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 02:09:39,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:09:39,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 410 [2023-11-12 02:09:39,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:09:39,434 INFO L124 PetriNetUnfolderBase]: 8/126 cut-off events. [2023-11-12 02:09:39,434 INFO L125 PetriNetUnfolderBase]: For 4/6 co-relation queries the response was YES. [2023-11-12 02:09:39,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 126 events. 8/126 cut-off events. For 4/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 485 event pairs, 8 based on Foata normal form. 1/100 useless extension candidates. Maximal degree in co-relation 125. Up to 29 conditions per place. [2023-11-12 02:09:39,437 INFO L140 encePairwiseOnDemand]: 401/410 looper letters, 8 selfloop transitions, 0 changer transitions 1/39 dead transitions. [2023-11-12 02:09:39,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 39 transitions, 103 flow [2023-11-12 02:09:39,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:09:39,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-12 02:09:39,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 474 transitions. [2023-11-12 02:09:39,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5780487804878048 [2023-11-12 02:09:39,458 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 474 transitions. [2023-11-12 02:09:39,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 474 transitions. [2023-11-12 02:09:39,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:09:39,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 474 transitions. [2023-11-12 02:09:39,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 237.0) internal successors, (474), 2 states have internal predecessors, (474), 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 02:09:39,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 410.0) internal successors, (1230), 3 states have internal predecessors, (1230), 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 02:09:39,480 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 410.0) internal successors, (1230), 3 states have internal predecessors, (1230), 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 02:09:39,483 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 103 flow. Second operand 2 states and 474 transitions. [2023-11-12 02:09:39,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 39 transitions, 103 flow [2023-11-12 02:09:39,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 39 transitions, 103 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:09:39,490 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 80 flow [2023-11-12 02:09:39,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=80, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2023-11-12 02:09:39,497 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -8 predicate places. [2023-11-12 02:09:39,497 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 80 flow [2023-11-12 02:09:39,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 228.5) internal successors, (457), 2 states have internal predecessors, (457), 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 02:09:39,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:09:39,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 02:09:39,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:09:39,500 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2023-11-12 02:09:39,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:39,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1489641555, now seen corresponding path program 1 times [2023-11-12 02:09:39,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:39,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405624261] [2023-11-12 02:09:39,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:39,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:39,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:39,815 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 02:09:39,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:39,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405624261] [2023-11-12 02:09:39,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405624261] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:39,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:09:39,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:09:39,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585764475] [2023-11-12 02:09:39,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:39,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:09:39,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:39,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:09:39,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:09:39,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 410 [2023-11-12 02:09:39,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 222.66666666666666) internal successors, (668), 3 states have internal predecessors, (668), 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 02:09:39,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:09:39,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 410 [2023-11-12 02:09:39,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:09:39,931 INFO L124 PetriNetUnfolderBase]: 8/95 cut-off events. [2023-11-12 02:09:39,932 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:09:39,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 95 events. 8/95 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 365 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 122. Up to 21 conditions per place. [2023-11-12 02:09:39,935 INFO L140 encePairwiseOnDemand]: 407/410 looper letters, 9 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2023-11-12 02:09:39,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 41 transitions, 108 flow [2023-11-12 02:09:39,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:09:39,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:09:39,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 678 transitions. [2023-11-12 02:09:39,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.551219512195122 [2023-11-12 02:09:39,946 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 678 transitions. [2023-11-12 02:09:39,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 678 transitions. [2023-11-12 02:09:39,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:09:39,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 678 transitions. [2023-11-12 02:09:39,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 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 02:09:39,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 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 02:09:39,966 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 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 02:09:39,966 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 80 flow. Second operand 3 states and 678 transitions. [2023-11-12 02:09:39,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 41 transitions, 108 flow [2023-11-12 02:09:39,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 41 transitions, 108 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:09:39,970 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 88 flow [2023-11-12 02:09:39,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2023-11-12 02:09:39,972 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -6 predicate places. [2023-11-12 02:09:39,979 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 88 flow [2023-11-12 02:09:39,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 222.66666666666666) internal successors, (668), 3 states have internal predecessors, (668), 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 02:09:39,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:09:39,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 02:09:39,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:09:39,982 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2023-11-12 02:09:39,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:39,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1472781267, now seen corresponding path program 1 times [2023-11-12 02:09:39,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:39,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434994115] [2023-11-12 02:09:39,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:39,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:40,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:40,649 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 02:09:40,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:40,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434994115] [2023-11-12 02:09:40,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434994115] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:40,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:09:40,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:09:40,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940877527] [2023-11-12 02:09:40,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:40,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:09:40,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:40,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:09:40,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:09:41,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 410 [2023-11-12 02:09:41,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 88 flow. Second operand has 6 states, 6 states have (on average 193.0) internal successors, (1158), 6 states have internal predecessors, (1158), 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 02:09:41,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:09:41,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 410 [2023-11-12 02:09:41,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:09:41,471 INFO L124 PetriNetUnfolderBase]: 84/326 cut-off events. [2023-11-12 02:09:41,471 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2023-11-12 02:09:41,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 553 conditions, 326 events. 84/326 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1728 event pairs, 84 based on Foata normal form. 0/294 useless extension candidates. Maximal degree in co-relation 547. Up to 190 conditions per place. [2023-11-12 02:09:41,475 INFO L140 encePairwiseOnDemand]: 403/410 looper letters, 21 selfloop transitions, 4 changer transitions 0/39 dead transitions. [2023-11-12 02:09:41,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 39 transitions, 140 flow [2023-11-12 02:09:41,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:09:41,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:09:41,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1180 transitions. [2023-11-12 02:09:41,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4796747967479675 [2023-11-12 02:09:41,481 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1180 transitions. [2023-11-12 02:09:41,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1180 transitions. [2023-11-12 02:09:41,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:09:41,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1180 transitions. [2023-11-12 02:09:41,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 196.66666666666666) internal successors, (1180), 6 states have internal predecessors, (1180), 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 02:09:41,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 410.0) internal successors, (2870), 7 states have internal predecessors, (2870), 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 02:09:41,497 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 410.0) internal successors, (2870), 7 states have internal predecessors, (2870), 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 02:09:41,497 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 88 flow. Second operand 6 states and 1180 transitions. [2023-11-12 02:09:41,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 39 transitions, 140 flow [2023-11-12 02:09:41,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 39 transitions, 136 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:09:41,500 INFO L231 Difference]: Finished difference. Result has 49 places, 39 transitions, 109 flow [2023-11-12 02:09:41,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=109, PETRI_PLACES=49, PETRI_TRANSITIONS=39} [2023-11-12 02:09:41,501 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -2 predicate places. [2023-11-12 02:09:41,501 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 39 transitions, 109 flow [2023-11-12 02:09:41,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 193.0) internal successors, (1158), 6 states have internal predecessors, (1158), 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 02:09:41,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:09:41,503 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2023-11-12 02:09:41,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:09:41,503 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2023-11-12 02:09:41,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:41,504 INFO L85 PathProgramCache]: Analyzing trace with hash 459811018, now seen corresponding path program 1 times [2023-11-12 02:09:41,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:41,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514542195] [2023-11-12 02:09:41,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:41,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:41,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:09:41,583 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:09:41,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:09:41,651 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:09:41,651 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 02:09:41,653 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2023-11-12 02:09:41,656 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (17 of 19 remaining) [2023-11-12 02:09:41,657 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 19 remaining) [2023-11-12 02:09:41,658 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (15 of 19 remaining) [2023-11-12 02:09:41,659 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (14 of 19 remaining) [2023-11-12 02:09:41,659 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (13 of 19 remaining) [2023-11-12 02:09:41,660 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (12 of 19 remaining) [2023-11-12 02:09:41,660 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (11 of 19 remaining) [2023-11-12 02:09:41,660 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (10 of 19 remaining) [2023-11-12 02:09:41,661 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (9 of 19 remaining) [2023-11-12 02:09:41,661 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (8 of 19 remaining) [2023-11-12 02:09:41,661 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (7 of 19 remaining) [2023-11-12 02:09:41,662 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONDATA_RACE (6 of 19 remaining) [2023-11-12 02:09:41,662 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONDATA_RACE (5 of 19 remaining) [2023-11-12 02:09:41,663 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONDATA_RACE (4 of 19 remaining) [2023-11-12 02:09:41,663 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (3 of 19 remaining) [2023-11-12 02:09:41,664 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONDATA_RACE (2 of 19 remaining) [2023-11-12 02:09:41,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONDATA_RACE (1 of 19 remaining) [2023-11-12 02:09:41,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONDATA_RACE (0 of 19 remaining) [2023-11-12 02:09:41,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:09:41,666 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-12 02:09:41,670 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-12 02:09:41,671 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-12 02:09:41,763 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-11-12 02:09:41,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 291 places, 315 transitions, 664 flow [2023-11-12 02:09:41,971 INFO L124 PetriNetUnfolderBase]: 46/651 cut-off events. [2023-11-12 02:09:41,971 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-12 02:09:41,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 675 conditions, 651 events. 46/651 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2163 event pairs, 0 based on Foata normal form. 0/551 useless extension candidates. Maximal degree in co-relation 369. Up to 12 conditions per place. [2023-11-12 02:09:41,979 INFO L82 GeneralOperation]: Start removeDead. Operand has 291 places, 315 transitions, 664 flow [2023-11-12 02:09:41,988 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 241 places, 255 transitions, 532 flow [2023-11-12 02:09:41,988 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:09:41,989 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 241 places, 255 transitions, 532 flow [2023-11-12 02:09:41,990 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 241 places, 255 transitions, 532 flow [2023-11-12 02:09:41,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 241 places, 255 transitions, 532 flow [2023-11-12 02:09:42,172 INFO L124 PetriNetUnfolderBase]: 46/651 cut-off events. [2023-11-12 02:09:42,172 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-12 02:09:42,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 675 conditions, 651 events. 46/651 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2164 event pairs, 0 based on Foata normal form. 0/551 useless extension candidates. Maximal degree in co-relation 369. Up to 12 conditions per place. [2023-11-12 02:09:42,219 INFO L119 LiptonReduction]: Number of co-enabled transitions 25758 [2023-11-12 02:10:10,703 INFO L134 LiptonReduction]: Checked pairs total: 117324 [2023-11-12 02:10:10,703 INFO L136 LiptonReduction]: Total number of compositions: 221 [2023-11-12 02:10:10,705 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:10:10,707 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;@14dc2796, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:10:10,707 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2023-11-12 02:10:10,708 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:10:10,708 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-12 02:10:10,708 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:10:10,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:10:10,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-12 02:10:10,709 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-11-12 02:10:10,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:10:10,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1227, now seen corresponding path program 1 times [2023-11-12 02:10:10,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:10:10,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110874954] [2023-11-12 02:10:10,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:10:10,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:10:10,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:10,717 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 02:10:10,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:10:10,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110874954] [2023-11-12 02:10:10,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110874954] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:10:10,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:10:10,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-12 02:10:10,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028855223] [2023-11-12 02:10:10,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:10:10,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:10:10,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:10:10,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:10:10,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:10:10,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 297 out of 536 [2023-11-12 02:10:10,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 97 transitions, 216 flow. Second operand has 2 states, 2 states have (on average 297.5) internal successors, (595), 2 states have internal predecessors, (595), 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 02:10:10,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:10:10,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 297 of 536 [2023-11-12 02:10:10,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:10:11,516 INFO L124 PetriNetUnfolderBase]: 874/2806 cut-off events. [2023-11-12 02:10:11,516 INFO L125 PetriNetUnfolderBase]: For 132/168 co-relation queries the response was YES. [2023-11-12 02:10:11,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4303 conditions, 2806 events. 874/2806 cut-off events. For 132/168 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 20705 event pairs, 668 based on Foata normal form. 0/2305 useless extension candidates. Maximal degree in co-relation 3373. Up to 1425 conditions per place. [2023-11-12 02:10:11,542 INFO L140 encePairwiseOnDemand]: 531/536 looper letters, 32 selfloop transitions, 0 changer transitions 0/92 dead transitions. [2023-11-12 02:10:11,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 92 transitions, 270 flow [2023-11-12 02:10:11,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:10:11,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-12 02:10:11,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 631 transitions. [2023-11-12 02:10:11,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5886194029850746 [2023-11-12 02:10:11,547 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 631 transitions. [2023-11-12 02:10:11,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 631 transitions. [2023-11-12 02:10:11,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:10:11,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 631 transitions. [2023-11-12 02:10:11,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 315.5) internal successors, (631), 2 states have internal predecessors, (631), 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 02:10:11,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 536.0) internal successors, (1608), 3 states have internal predecessors, (1608), 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 02:10:11,555 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 536.0) internal successors, (1608), 3 states have internal predecessors, (1608), 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 02:10:11,556 INFO L175 Difference]: Start difference. First operand has 97 places, 97 transitions, 216 flow. Second operand 2 states and 631 transitions. [2023-11-12 02:10:11,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 92 transitions, 270 flow [2023-11-12 02:10:11,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 92 transitions, 270 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:10:11,563 INFO L231 Difference]: Finished difference. Result has 93 places, 92 transitions, 206 flow [2023-11-12 02:10:11,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=536, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=206, PETRI_PLACES=93, PETRI_TRANSITIONS=92} [2023-11-12 02:10:11,566 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -4 predicate places. [2023-11-12 02:10:11,566 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 92 transitions, 206 flow [2023-11-12 02:10:11,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 297.5) internal successors, (595), 2 states have internal predecessors, (595), 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 02:10:11,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:10:11,567 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 02:10:11,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:10:11,568 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-11-12 02:10:11,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:10:11,568 INFO L85 PathProgramCache]: Analyzing trace with hash -2109341736, now seen corresponding path program 1 times [2023-11-12 02:10:11,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:10:11,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828314002] [2023-11-12 02:10:11,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:10:11,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:10:11,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:11,973 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 02:10:11,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:10:11,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828314002] [2023-11-12 02:10:11,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828314002] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:10:11,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:10:11,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:10:11,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643812376] [2023-11-12 02:10:11,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:10:11,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:10:11,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:10:11,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:10:11,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:10:12,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 536 [2023-11-12 02:10:12,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 92 transitions, 206 flow. Second operand has 6 states, 6 states have (on average 256.0) internal successors, (1536), 6 states have internal predecessors, (1536), 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 02:10:12,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:10:12,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 536 [2023-11-12 02:10:12,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:10:14,820 INFO L124 PetriNetUnfolderBase]: 5411/11393 cut-off events. [2023-11-12 02:10:14,820 INFO L125 PetriNetUnfolderBase]: For 277/369 co-relation queries the response was YES. [2023-11-12 02:10:14,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19991 conditions, 11393 events. 5411/11393 cut-off events. For 277/369 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 86454 event pairs, 4632 based on Foata normal form. 0/10024 useless extension candidates. Maximal degree in co-relation 19986. Up to 8466 conditions per place. [2023-11-12 02:10:14,924 INFO L140 encePairwiseOnDemand]: 523/536 looper letters, 53 selfloop transitions, 8 changer transitions 0/95 dead transitions. [2023-11-12 02:10:14,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 95 transitions, 334 flow [2023-11-12 02:10:14,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:10:14,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:10:14,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1596 transitions. [2023-11-12 02:10:14,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4962686567164179 [2023-11-12 02:10:14,932 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1596 transitions. [2023-11-12 02:10:14,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1596 transitions. [2023-11-12 02:10:14,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:10:14,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1596 transitions. [2023-11-12 02:10:14,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 266.0) internal successors, (1596), 6 states have internal predecessors, (1596), 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 02:10:14,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 536.0) internal successors, (3752), 7 states have internal predecessors, (3752), 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 02:10:14,952 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 536.0) internal successors, (3752), 7 states have internal predecessors, (3752), 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 02:10:14,953 INFO L175 Difference]: Start difference. First operand has 93 places, 92 transitions, 206 flow. Second operand 6 states and 1596 transitions. [2023-11-12 02:10:14,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 95 transitions, 334 flow [2023-11-12 02:10:14,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 95 transitions, 334 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:10:14,962 INFO L231 Difference]: Finished difference. Result has 97 places, 95 transitions, 258 flow [2023-11-12 02:10:14,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=536, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=258, PETRI_PLACES=97, PETRI_TRANSITIONS=95} [2023-11-12 02:10:14,964 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, 0 predicate places. [2023-11-12 02:10:14,964 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 95 transitions, 258 flow [2023-11-12 02:10:14,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 256.0) internal successors, (1536), 6 states have internal predecessors, (1536), 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 02:10:14,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:10:14,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:10:14,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:10:14,967 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-11-12 02:10:14,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:10:14,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1487433186, now seen corresponding path program 1 times [2023-11-12 02:10:14,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:10:14,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101975780] [2023-11-12 02:10:14,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:10:14,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:10:15,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:15,042 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 02:10:15,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:10:15,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101975780] [2023-11-12 02:10:15,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101975780] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:10:15,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:10:15,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:10:15,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144312792] [2023-11-12 02:10:15,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:10:15,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:10:15,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:10:15,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:10:15,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:10:15,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 291 out of 536 [2023-11-12 02:10:15,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 95 transitions, 258 flow. Second operand has 3 states, 3 states have (on average 292.0) internal successors, (876), 3 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:10:15,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:10:15,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 291 of 536 [2023-11-12 02:10:15,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand