./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_11-ptr_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version a0165632 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_15841361-a7a3-4a15-95cd-2ea8febbceae/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15841361-a7a3-4a15-95cd-2ea8febbceae/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15841361-a7a3-4a15-95cd-2ea8febbceae/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15841361-a7a3-4a15-95cd-2ea8febbceae/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_11-ptr_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15841361-a7a3-4a15-95cd-2ea8febbceae/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15841361-a7a3-4a15-95cd-2ea8febbceae/bin/uautomizer-verify-jihMAELWvX --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 265daba2b5ad7b4578f16c23ab641f7a5441c3a3894a2482737cba7b750ee6df --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 17:14:27,204 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 17:14:27,313 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15841361-a7a3-4a15-95cd-2ea8febbceae/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-11-08 17:14:27,318 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 17:14:27,319 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 17:14:27,367 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 17:14:27,369 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 17:14:27,370 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 17:14:27,371 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 17:14:27,373 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 17:14:27,374 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 17:14:27,376 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 17:14:27,376 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 17:14:27,377 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 17:14:27,379 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 17:14:27,380 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 17:14:27,382 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 17:14:27,383 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 17:14:27,383 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 17:14:27,384 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 17:14:27,388 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 17:14:27,389 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 17:14:27,389 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-11-08 17:14:27,390 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 17:14:27,390 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 17:14:27,391 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 17:14:27,391 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 17:14:27,391 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 17:14:27,392 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 17:14:27,393 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 17:14:27,393 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 17:14:27,394 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:14:27,394 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 17:14:27,395 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 17:14:27,395 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 17:14:27,396 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 17:14:27,396 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 17:14:27,397 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 17:14:27,397 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 17:14:27,397 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 17:14:27,398 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 17:14:27,398 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_15841361-a7a3-4a15-95cd-2ea8febbceae/bin/uautomizer-verify-jihMAELWvX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15841361-a7a3-4a15-95cd-2ea8febbceae/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 265daba2b5ad7b4578f16c23ab641f7a5441c3a3894a2482737cba7b750ee6df [2024-11-08 17:14:27,782 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 17:14:27,822 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 17:14:27,825 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 17:14:27,827 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 17:14:27,828 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 17:14:27,830 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15841361-a7a3-4a15-95cd-2ea8febbceae/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/goblint-regression/28-race_reach_11-ptr_racing.i Unable to find full path for "g++" [2024-11-08 17:14:30,343 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 17:14:30,666 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 17:14:30,667 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15841361-a7a3-4a15-95cd-2ea8febbceae/sv-benchmarks/c/goblint-regression/28-race_reach_11-ptr_racing.i [2024-11-08 17:14:30,684 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15841361-a7a3-4a15-95cd-2ea8febbceae/bin/uautomizer-verify-jihMAELWvX/data/c04ca0ad2/98ceaf7df0624a25b514502a15ad7d8b/FLAG6ce895c33 [2024-11-08 17:14:30,704 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15841361-a7a3-4a15-95cd-2ea8febbceae/bin/uautomizer-verify-jihMAELWvX/data/c04ca0ad2/98ceaf7df0624a25b514502a15ad7d8b [2024-11-08 17:14:30,708 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 17:14:30,710 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 17:14:30,712 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 17:14:30,712 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 17:14:30,720 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 17:14:30,721 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:14:30" (1/1) ... [2024-11-08 17:14:30,722 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bc7858 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:14:30, skipping insertion in model container [2024-11-08 17:14:30,723 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:14:30" (1/1) ... [2024-11-08 17:14:30,790 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 17:14:31,477 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:14:31,503 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 17:14:31,595 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:14:31,657 INFO L204 MainTranslator]: Completed translation [2024-11-08 17:14:31,658 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:14:31 WrapperNode [2024-11-08 17:14:31,658 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 17:14:31,660 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 17:14:31,660 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 17:14:31,660 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 17:14:31,670 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:14:31" (1/1) ... [2024-11-08 17:14:31,697 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:14:31" (1/1) ... [2024-11-08 17:14:31,745 INFO L138 Inliner]: procedures = 171, calls = 49, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 102 [2024-11-08 17:14:31,749 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 17:14:31,750 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 17:14:31,751 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 17:14:31,751 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 17:14:31,765 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:14:31" (1/1) ... [2024-11-08 17:14:31,765 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:14:31" (1/1) ... [2024-11-08 17:14:31,772 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:14:31" (1/1) ... [2024-11-08 17:14:31,776 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:14:31" (1/1) ... [2024-11-08 17:14:31,795 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:14:31" (1/1) ... [2024-11-08 17:14:31,804 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:14:31" (1/1) ... [2024-11-08 17:14:31,810 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:14:31" (1/1) ... [2024-11-08 17:14:31,815 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:14:31" (1/1) ... [2024-11-08 17:14:31,818 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 17:14:31,826 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 17:14:31,826 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 17:14:31,826 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 17:14:31,827 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:14:31" (1/1) ... [2024-11-08 17:14:31,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:14:31,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15841361-a7a3-4a15-95cd-2ea8febbceae/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:14:31,877 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15841361-a7a3-4a15-95cd-2ea8febbceae/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 17:14:31,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15841361-a7a3-4a15-95cd-2ea8febbceae/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 17:14:31,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-08 17:14:31,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-08 17:14:31,929 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-08 17:14:31,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 17:14:31,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 17:14:31,929 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-08 17:14:31,930 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-08 17:14:31,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 17:14:31,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-08 17:14:31,930 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-08 17:14:31,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 17:14:31,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 17:14:31,933 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-08 17:14:32,114 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 17:14:32,116 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 17:14:32,556 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 17:14:32,557 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 17:14:32,644 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 17:14:32,645 INFO L316 CfgBuilder]: Removed 8 assume(true) statements. [2024-11-08 17:14:32,645 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:14:32 BoogieIcfgContainer [2024-11-08 17:14:32,646 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 17:14:32,649 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 17:14:32,650 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 17:14:32,655 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 17:14:32,656 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 05:14:30" (1/3) ... [2024-11-08 17:14:32,657 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c28a8d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:14:32, skipping insertion in model container [2024-11-08 17:14:32,657 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:14:31" (2/3) ... [2024-11-08 17:14:32,658 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c28a8d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:14:32, skipping insertion in model container [2024-11-08 17:14:32,659 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:14:32" (3/3) ... [2024-11-08 17:14:32,662 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_11-ptr_racing.i [2024-11-08 17:14:32,719 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 17:14:32,719 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2024-11-08 17:14:32,720 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 17:14:32,870 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-08 17:14:32,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 173 transitions, 353 flow [2024-11-08 17:14:33,072 INFO L124 PetriNetUnfolderBase]: 19/239 cut-off events. [2024-11-08 17:14:33,074 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-08 17:14:33,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244 conditions, 239 events. 19/239 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 729 event pairs, 0 based on Foata normal form. 0/207 useless extension candidates. Maximal degree in co-relation 133. Up to 4 conditions per place. [2024-11-08 17:14:33,086 INFO L82 GeneralOperation]: Start removeDead. Operand has 163 places, 173 transitions, 353 flow [2024-11-08 17:14:33,098 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 163 places, 173 transitions, 353 flow [2024-11-08 17:14:33,119 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 17:14:33,130 INFO L333 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, 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;@4bfadfcc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 17:14:33,131 INFO L334 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2024-11-08 17:14:33,155 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 17:14:33,155 INFO L124 PetriNetUnfolderBase]: 2/67 cut-off events. [2024-11-08 17:14:33,155 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 17:14:33,156 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:14:33,157 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:14:33,158 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-11-08 17:14:33,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:14:33,166 INFO L85 PathProgramCache]: Analyzing trace with hash -805226319, now seen corresponding path program 1 times [2024-11-08 17:14:33,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:14:33,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541611073] [2024-11-08 17:14:33,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:14:33,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:14:33,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:34,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:14:34,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:14:34,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541611073] [2024-11-08 17:14:34,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541611073] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:14:34,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:14:34,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 17:14:34,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561297638] [2024-11-08 17:14:34,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:14:34,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:14:34,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:14:34,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:14:34,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:14:35,194 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 173 [2024-11-08 17:14:35,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 173 transitions, 353 flow. Second operand has 6 states, 6 states have (on average 113.5) internal successors, (681), 6 states have internal predecessors, (681), 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) [2024-11-08 17:14:35,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:14:35,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 173 [2024-11-08 17:14:35,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:14:36,475 INFO L124 PetriNetUnfolderBase]: 587/2176 cut-off events. [2024-11-08 17:14:36,475 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-08 17:14:36,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3434 conditions, 2176 events. 587/2176 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 15135 event pairs, 343 based on Foata normal form. 174/2183 useless extension candidates. Maximal degree in co-relation 3281. Up to 1080 conditions per place. [2024-11-08 17:14:36,494 INFO L140 encePairwiseOnDemand]: 140/173 looper letters, 73 selfloop transitions, 70 changer transitions 0/254 dead transitions. [2024-11-08 17:14:36,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 254 transitions, 801 flow [2024-11-08 17:14:36,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:14:36,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 17:14:36,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 850 transitions. [2024-11-08 17:14:36,516 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8188824662813102 [2024-11-08 17:14:36,519 INFO L175 Difference]: Start difference. First operand has 163 places, 173 transitions, 353 flow. Second operand 6 states and 850 transitions. [2024-11-08 17:14:36,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 254 transitions, 801 flow [2024-11-08 17:14:36,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 254 transitions, 801 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 17:14:36,535 INFO L231 Difference]: Finished difference. Result has 171 places, 230 transitions, 791 flow [2024-11-08 17:14:36,538 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=791, PETRI_PLACES=171, PETRI_TRANSITIONS=230} [2024-11-08 17:14:36,543 INFO L277 CegarLoopForPetriNet]: 163 programPoint places, 8 predicate places. [2024-11-08 17:14:36,544 INFO L471 AbstractCegarLoop]: Abstraction has has 171 places, 230 transitions, 791 flow [2024-11-08 17:14:36,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 113.5) internal successors, (681), 6 states have internal predecessors, (681), 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) [2024-11-08 17:14:36,545 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:14:36,545 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:14:36,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 17:14:36,546 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-11-08 17:14:36,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:14:36,548 INFO L85 PathProgramCache]: Analyzing trace with hash 452552178, now seen corresponding path program 1 times [2024-11-08 17:14:36,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:14:36,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973363212] [2024-11-08 17:14:36,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:14:36,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:14:36,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:36,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:14:36,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:14:36,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973363212] [2024-11-08 17:14:36,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973363212] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:14:36,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:14:36,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:14:36,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684596396] [2024-11-08 17:14:36,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:14:36,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:14:36,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:14:36,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:14:36,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:14:36,700 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 173 [2024-11-08 17:14:36,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 230 transitions, 791 flow. Second operand has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 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) [2024-11-08 17:14:36,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:14:36,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 173 [2024-11-08 17:14:36,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:14:36,983 INFO L124 PetriNetUnfolderBase]: 200/1172 cut-off events. [2024-11-08 17:14:36,984 INFO L125 PetriNetUnfolderBase]: For 118/132 co-relation queries the response was YES. [2024-11-08 17:14:36,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1886 conditions, 1172 events. 200/1172 cut-off events. For 118/132 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 7008 event pairs, 35 based on Foata normal form. 2/1090 useless extension candidates. Maximal degree in co-relation 1775. Up to 223 conditions per place. [2024-11-08 17:14:36,997 INFO L140 encePairwiseOnDemand]: 169/173 looper letters, 23 selfloop transitions, 3 changer transitions 0/236 dead transitions. [2024-11-08 17:14:36,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 236 transitions, 855 flow [2024-11-08 17:14:36,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:14:36,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:14:36,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 456 transitions. [2024-11-08 17:14:37,000 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8786127167630058 [2024-11-08 17:14:37,000 INFO L175 Difference]: Start difference. First operand has 171 places, 230 transitions, 791 flow. Second operand 3 states and 456 transitions. [2024-11-08 17:14:37,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 236 transitions, 855 flow [2024-11-08 17:14:37,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 236 transitions, 855 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 17:14:37,014 INFO L231 Difference]: Finished difference. Result has 174 places, 230 transitions, 804 flow [2024-11-08 17:14:37,014 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=791, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=804, PETRI_PLACES=174, PETRI_TRANSITIONS=230} [2024-11-08 17:14:37,016 INFO L277 CegarLoopForPetriNet]: 163 programPoint places, 11 predicate places. [2024-11-08 17:14:37,016 INFO L471 AbstractCegarLoop]: Abstraction has has 174 places, 230 transitions, 804 flow [2024-11-08 17:14:37,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 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) [2024-11-08 17:14:37,017 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:14:37,017 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:14:37,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 17:14:37,018 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-11-08 17:14:37,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:14:37,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1743466913, now seen corresponding path program 1 times [2024-11-08 17:14:37,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:14:37,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812656745] [2024-11-08 17:14:37,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:14:37,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:14:37,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:37,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:14:37,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:14:37,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812656745] [2024-11-08 17:14:37,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812656745] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:14:37,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:14:37,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 17:14:37,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208304822] [2024-11-08 17:14:37,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:14:37,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:14:37,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:14:37,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:14:37,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:14:38,198 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 173 [2024-11-08 17:14:38,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 230 transitions, 804 flow. Second operand has 6 states, 6 states have (on average 125.16666666666667) internal successors, (751), 6 states have internal predecessors, (751), 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) [2024-11-08 17:14:38,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:14:38,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 173 [2024-11-08 17:14:38,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:14:38,706 INFO L124 PetriNetUnfolderBase]: 382/1586 cut-off events. [2024-11-08 17:14:38,707 INFO L125 PetriNetUnfolderBase]: For 462/474 co-relation queries the response was YES. [2024-11-08 17:14:38,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3272 conditions, 1586 events. 382/1586 cut-off events. For 462/474 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 10719 event pairs, 96 based on Foata normal form. 2/1523 useless extension candidates. Maximal degree in co-relation 3148. Up to 642 conditions per place. [2024-11-08 17:14:38,724 INFO L140 encePairwiseOnDemand]: 155/173 looper letters, 112 selfloop transitions, 53 changer transitions 0/289 dead transitions. [2024-11-08 17:14:38,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 289 transitions, 1376 flow [2024-11-08 17:14:38,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:14:38,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 17:14:38,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 821 transitions. [2024-11-08 17:14:38,727 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7909441233140655 [2024-11-08 17:14:38,727 INFO L175 Difference]: Start difference. First operand has 174 places, 230 transitions, 804 flow. Second operand 6 states and 821 transitions. [2024-11-08 17:14:38,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 289 transitions, 1376 flow [2024-11-08 17:14:38,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 289 transitions, 1370 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 17:14:38,742 INFO L231 Difference]: Finished difference. Result has 182 places, 273 transitions, 1286 flow [2024-11-08 17:14:38,743 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=798, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1286, PETRI_PLACES=182, PETRI_TRANSITIONS=273} [2024-11-08 17:14:38,744 INFO L277 CegarLoopForPetriNet]: 163 programPoint places, 19 predicate places. [2024-11-08 17:14:38,744 INFO L471 AbstractCegarLoop]: Abstraction has has 182 places, 273 transitions, 1286 flow [2024-11-08 17:14:38,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 125.16666666666667) internal successors, (751), 6 states have internal predecessors, (751), 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) [2024-11-08 17:14:38,745 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:14:38,745 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:14:38,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 17:14:38,746 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-11-08 17:14:38,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:14:38,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1344780946, now seen corresponding path program 1 times [2024-11-08 17:14:38,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:14:38,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535626750] [2024-11-08 17:14:38,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:14:38,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:14:38,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 17:14:38,792 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 17:14:38,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 17:14:38,863 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 17:14:38,863 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-08 17:14:38,865 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 12 remaining) [2024-11-08 17:14:38,869 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (10 of 12 remaining) [2024-11-08 17:14:38,870 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (9 of 12 remaining) [2024-11-08 17:14:38,871 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (8 of 12 remaining) [2024-11-08 17:14:38,872 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 12 remaining) [2024-11-08 17:14:38,872 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 12 remaining) [2024-11-08 17:14:38,872 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 12 remaining) [2024-11-08 17:14:38,873 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 12 remaining) [2024-11-08 17:14:38,875 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 12 remaining) [2024-11-08 17:14:38,875 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 12 remaining) [2024-11-08 17:14:38,876 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 12 remaining) [2024-11-08 17:14:38,876 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 12 remaining) [2024-11-08 17:14:38,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 17:14:38,877 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-08 17:14:38,880 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-08 17:14:38,882 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-08 17:14:38,960 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-08 17:14:38,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 224 places, 239 transitions, 494 flow [2024-11-08 17:14:39,073 INFO L124 PetriNetUnfolderBase]: 34/400 cut-off events. [2024-11-08 17:14:39,073 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-08 17:14:39,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 412 conditions, 400 events. 34/400 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1472 event pairs, 0 based on Foata normal form. 0/344 useless extension candidates. Maximal degree in co-relation 241. Up to 8 conditions per place. [2024-11-08 17:14:39,080 INFO L82 GeneralOperation]: Start removeDead. Operand has 224 places, 239 transitions, 494 flow [2024-11-08 17:14:39,084 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 224 places, 239 transitions, 494 flow [2024-11-08 17:14:39,086 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 17:14:39,087 INFO L333 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, 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;@4bfadfcc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 17:14:39,087 INFO L334 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2024-11-08 17:14:39,095 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 17:14:39,095 INFO L124 PetriNetUnfolderBase]: 2/67 cut-off events. [2024-11-08 17:14:39,096 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 17:14:39,096 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:14:39,096 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:14:39,096 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-11-08 17:14:39,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:14:39,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1356294048, now seen corresponding path program 1 times [2024-11-08 17:14:39,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:14:39,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545184907] [2024-11-08 17:14:39,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:14:39,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:14:39,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:39,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:14:39,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:14:39,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545184907] [2024-11-08 17:14:39,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545184907] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:14:39,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:14:39,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 17:14:39,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877839408] [2024-11-08 17:14:39,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:14:39,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:14:39,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:14:39,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:14:39,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:14:40,246 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 239 [2024-11-08 17:14:40,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 239 transitions, 494 flow. Second operand has 6 states, 6 states have (on average 149.5) internal successors, (897), 6 states have internal predecessors, (897), 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) [2024-11-08 17:14:40,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:14:40,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 239 [2024-11-08 17:14:40,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:14:53,652 INFO L124 PetriNetUnfolderBase]: 29196/68704 cut-off events. [2024-11-08 17:14:53,652 INFO L125 PetriNetUnfolderBase]: For 713/713 co-relation queries the response was YES. [2024-11-08 17:14:53,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114242 conditions, 68704 events. 29196/68704 cut-off events. For 713/713 co-relation queries the response was YES. Maximal size of possible extension queue 1199. Compared 767275 event pairs, 20498 based on Foata normal form. 6971/71537 useless extension candidates. Maximal degree in co-relation 89979. Up to 40551 conditions per place. [2024-11-08 17:14:54,086 INFO L140 encePairwiseOnDemand]: 184/239 looper letters, 122 selfloop transitions, 134 changer transitions 0/403 dead transitions. [2024-11-08 17:14:54,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 403 transitions, 1339 flow [2024-11-08 17:14:54,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:14:54,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 17:14:54,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1209 transitions. [2024-11-08 17:14:54,091 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8430962343096234 [2024-11-08 17:14:54,091 INFO L175 Difference]: Start difference. First operand has 224 places, 239 transitions, 494 flow. Second operand 6 states and 1209 transitions. [2024-11-08 17:14:54,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 403 transitions, 1339 flow [2024-11-08 17:14:54,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 403 transitions, 1339 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 17:14:54,120 INFO L231 Difference]: Finished difference. Result has 232 places, 354 transitions, 1336 flow [2024-11-08 17:14:54,124 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1336, PETRI_PLACES=232, PETRI_TRANSITIONS=354} [2024-11-08 17:14:54,125 INFO L277 CegarLoopForPetriNet]: 224 programPoint places, 8 predicate places. [2024-11-08 17:14:54,126 INFO L471 AbstractCegarLoop]: Abstraction has has 232 places, 354 transitions, 1336 flow [2024-11-08 17:14:54,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 149.5) internal successors, (897), 6 states have internal predecessors, (897), 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) [2024-11-08 17:14:54,127 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:14:54,127 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:14:54,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 17:14:54,129 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-11-08 17:14:54,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:14:54,130 INFO L85 PathProgramCache]: Analyzing trace with hash 549322002, now seen corresponding path program 1 times [2024-11-08 17:14:54,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:14:54,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168103910] [2024-11-08 17:14:54,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:14:54,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:14:54,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:54,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:14:54,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:14:54,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168103910] [2024-11-08 17:14:54,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168103910] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:14:54,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:14:54,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:14:54,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166391353] [2024-11-08 17:14:54,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:14:54,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:14:54,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:14:54,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:14:54,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:14:54,254 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 239 [2024-11-08 17:14:54,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 354 transitions, 1336 flow. Second operand has 3 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 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) [2024-11-08 17:14:54,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:14:54,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 239 [2024-11-08 17:14:54,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:15:00,247 INFO L124 PetriNetUnfolderBase]: 9983/31263 cut-off events. [2024-11-08 17:15:00,247 INFO L125 PetriNetUnfolderBase]: For 5258/5583 co-relation queries the response was YES. [2024-11-08 17:15:00,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55787 conditions, 31263 events. 9983/31263 cut-off events. For 5258/5583 co-relation queries the response was YES. Maximal size of possible extension queue 588. Compared 352438 event pairs, 3456 based on Foata normal form. 2/28550 useless extension candidates. Maximal degree in co-relation 29178. Up to 8542 conditions per place. [2024-11-08 17:15:00,516 INFO L140 encePairwiseOnDemand]: 235/239 looper letters, 33 selfloop transitions, 3 changer transitions 0/362 dead transitions. [2024-11-08 17:15:00,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 362 transitions, 1430 flow [2024-11-08 17:15:00,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:15:00,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:15:00,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 621 transitions. [2024-11-08 17:15:00,519 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8661087866108786 [2024-11-08 17:15:00,519 INFO L175 Difference]: Start difference. First operand has 232 places, 354 transitions, 1336 flow. Second operand 3 states and 621 transitions. [2024-11-08 17:15:00,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 362 transitions, 1430 flow [2024-11-08 17:15:00,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 362 transitions, 1430 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 17:15:00,758 INFO L231 Difference]: Finished difference. Result has 235 places, 356 transitions, 1363 flow [2024-11-08 17:15:00,759 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=1336, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1363, PETRI_PLACES=235, PETRI_TRANSITIONS=356} [2024-11-08 17:15:00,761 INFO L277 CegarLoopForPetriNet]: 224 programPoint places, 11 predicate places. [2024-11-08 17:15:00,762 INFO L471 AbstractCegarLoop]: Abstraction has has 235 places, 356 transitions, 1363 flow [2024-11-08 17:15:00,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 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) [2024-11-08 17:15:00,763 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:15:00,764 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:15:00,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 17:15:00,764 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-11-08 17:15:00,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:15:00,765 INFO L85 PathProgramCache]: Analyzing trace with hash -224038738, now seen corresponding path program 1 times [2024-11-08 17:15:00,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:15:00,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904710470] [2024-11-08 17:15:00,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:15:00,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:15:00,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:15:01,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:15:01,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:15:01,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904710470] [2024-11-08 17:15:01,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904710470] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:15:01,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:15:01,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 17:15:01,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200490755] [2024-11-08 17:15:01,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:15:01,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:15:01,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:15:01,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:15:01,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:15:01,925 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 239 [2024-11-08 17:15:01,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 356 transitions, 1363 flow. Second operand has 6 states, 6 states have (on average 169.16666666666666) internal successors, (1015), 6 states have internal predecessors, (1015), 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) [2024-11-08 17:15:01,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:15:01,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 239 [2024-11-08 17:15:01,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:15:12,600 INFO L124 PetriNetUnfolderBase]: 23050/57482 cut-off events. [2024-11-08 17:15:12,600 INFO L125 PetriNetUnfolderBase]: For 20564/22130 co-relation queries the response was YES. [2024-11-08 17:15:12,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125050 conditions, 57482 events. 23050/57482 cut-off events. For 20564/22130 co-relation queries the response was YES. Maximal size of possible extension queue 1119. Compared 649950 event pairs, 7778 based on Foata normal form. 50/53925 useless extension candidates. Maximal degree in co-relation 124877. Up to 26593 conditions per place. [2024-11-08 17:15:13,089 INFO L140 encePairwiseOnDemand]: 213/239 looper letters, 192 selfloop transitions, 141 changer transitions 0/535 dead transitions. [2024-11-08 17:15:13,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 535 transitions, 2831 flow [2024-11-08 17:15:13,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:15:13,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 17:15:13,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1165 transitions. [2024-11-08 17:15:13,093 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8124128312412832 [2024-11-08 17:15:13,094 INFO L175 Difference]: Start difference. First operand has 235 places, 356 transitions, 1363 flow. Second operand 6 states and 1165 transitions. [2024-11-08 17:15:13,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 535 transitions, 2831 flow [2024-11-08 17:15:13,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 535 transitions, 2828 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:15:13,814 INFO L231 Difference]: Finished difference. Result has 244 places, 487 transitions, 2744 flow [2024-11-08 17:15:13,815 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=1360, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2744, PETRI_PLACES=244, PETRI_TRANSITIONS=487} [2024-11-08 17:15:13,816 INFO L277 CegarLoopForPetriNet]: 224 programPoint places, 20 predicate places. [2024-11-08 17:15:13,816 INFO L471 AbstractCegarLoop]: Abstraction has has 244 places, 487 transitions, 2744 flow [2024-11-08 17:15:13,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 169.16666666666666) internal successors, (1015), 6 states have internal predecessors, (1015), 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) [2024-11-08 17:15:13,818 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:15:13,818 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:15:13,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 17:15:13,819 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-11-08 17:15:13,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:15:13,819 INFO L85 PathProgramCache]: Analyzing trace with hash 871147888, now seen corresponding path program 1 times [2024-11-08 17:15:13,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:15:13,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492496193] [2024-11-08 17:15:13,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:15:13,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:15:13,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:15:13,941 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:15:13,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:15:13,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492496193] [2024-11-08 17:15:13,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492496193] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:15:13,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987043434] [2024-11-08 17:15:13,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:15:13,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:15:13,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15841361-a7a3-4a15-95cd-2ea8febbceae/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:15:13,947 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15841361-a7a3-4a15-95cd-2ea8febbceae/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:15:13,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15841361-a7a3-4a15-95cd-2ea8febbceae/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 17:15:14,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:15:14,073 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 17:15:14,076 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:15:14,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:15:14,214 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:15:14,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:15:14,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987043434] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:15:14,312 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:15:14,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-08 17:15:14,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189993268] [2024-11-08 17:15:14,313 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:15:14,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 17:15:14,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:15:14,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 17:15:14,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-08 17:15:14,504 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 239 [2024-11-08 17:15:14,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 487 transitions, 2744 flow. Second operand has 10 states, 10 states have (on average 193.6) internal successors, (1936), 10 states have internal predecessors, (1936), 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) [2024-11-08 17:15:14,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:15:14,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 239 [2024-11-08 17:15:14,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:15:21,182 INFO L124 PetriNetUnfolderBase]: 12893/34238 cut-off events. [2024-11-08 17:15:21,182 INFO L125 PetriNetUnfolderBase]: For 24517/26562 co-relation queries the response was YES. [2024-11-08 17:15:21,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84953 conditions, 34238 events. 12893/34238 cut-off events. For 24517/26562 co-relation queries the response was YES. Maximal size of possible extension queue 592. Compared 358983 event pairs, 1741 based on Foata normal form. 424/32791 useless extension candidates. Maximal degree in co-relation 38536. Up to 13123 conditions per place. [2024-11-08 17:15:21,459 INFO L140 encePairwiseOnDemand]: 233/239 looper letters, 75 selfloop transitions, 9 changer transitions 0/494 dead transitions. [2024-11-08 17:15:21,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 494 transitions, 2916 flow [2024-11-08 17:15:21,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 17:15:21,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-08 17:15:21,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1805 transitions. [2024-11-08 17:15:21,471 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8391445839144583 [2024-11-08 17:15:21,471 INFO L175 Difference]: Start difference. First operand has 244 places, 487 transitions, 2744 flow. Second operand 9 states and 1805 transitions. [2024-11-08 17:15:21,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 494 transitions, 2916 flow [2024-11-08 17:15:22,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 494 transitions, 2898 flow, removed 9 selfloop flow, removed 0 redundant places. [2024-11-08 17:15:22,240 INFO L231 Difference]: Finished difference. Result has 203 places, 436 transitions, 2632 flow [2024-11-08 17:15:22,241 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=2610, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2632, PETRI_PLACES=203, PETRI_TRANSITIONS=436} [2024-11-08 17:15:22,242 INFO L277 CegarLoopForPetriNet]: 224 programPoint places, -21 predicate places. [2024-11-08 17:15:22,242 INFO L471 AbstractCegarLoop]: Abstraction has has 203 places, 436 transitions, 2632 flow [2024-11-08 17:15:22,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 193.6) internal successors, (1936), 10 states have internal predecessors, (1936), 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) [2024-11-08 17:15:22,244 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:15:22,245 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:15:22,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15841361-a7a3-4a15-95cd-2ea8febbceae/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 17:15:22,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15841361-a7a3-4a15-95cd-2ea8febbceae/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-08 17:15:22,453 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-11-08 17:15:22,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:15:22,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1310841929, now seen corresponding path program 1 times [2024-11-08 17:15:22,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:15:22,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721030725] [2024-11-08 17:15:22,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:15:22,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:15:22,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:15:23,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:15:23,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:15:23,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721030725] [2024-11-08 17:15:23,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721030725] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:15:23,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:15:23,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 17:15:23,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823664450] [2024-11-08 17:15:23,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:15:23,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:15:23,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:15:23,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:15:23,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:15:23,400 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 239 [2024-11-08 17:15:23,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 436 transitions, 2632 flow. Second operand has 6 states, 6 states have (on average 153.16666666666666) internal successors, (919), 6 states have internal predecessors, (919), 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) [2024-11-08 17:15:23,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:15:23,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 239 [2024-11-08 17:15:23,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:15:32,348 INFO L124 PetriNetUnfolderBase]: 20251/44592 cut-off events. [2024-11-08 17:15:32,348 INFO L125 PetriNetUnfolderBase]: For 46647/49776 co-relation queries the response was YES. [2024-11-08 17:15:32,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134466 conditions, 44592 events. 20251/44592 cut-off events. For 46647/49776 co-relation queries the response was YES. Maximal size of possible extension queue 739. Compared 440670 event pairs, 5307 based on Foata normal form. 80/42857 useless extension candidates. Maximal degree in co-relation 116608. Up to 29015 conditions per place. [2024-11-08 17:15:32,730 INFO L140 encePairwiseOnDemand]: 212/239 looper letters, 338 selfloop transitions, 213 changer transitions 0/667 dead transitions. [2024-11-08 17:15:32,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 667 transitions, 5076 flow [2024-11-08 17:15:32,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:15:32,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 17:15:32,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1072 transitions. [2024-11-08 17:15:32,743 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7475592747559274 [2024-11-08 17:15:32,744 INFO L175 Difference]: Start difference. First operand has 203 places, 436 transitions, 2632 flow. Second operand 6 states and 1072 transitions. [2024-11-08 17:15:32,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 667 transitions, 5076 flow [2024-11-08 17:15:33,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 667 transitions, 5053 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-11-08 17:15:33,226 INFO L231 Difference]: Finished difference. Result has 208 places, 639 transitions, 4919 flow [2024-11-08 17:15:33,227 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=2609, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4919, PETRI_PLACES=208, PETRI_TRANSITIONS=639} [2024-11-08 17:15:33,228 INFO L277 CegarLoopForPetriNet]: 224 programPoint places, -16 predicate places. [2024-11-08 17:15:33,228 INFO L471 AbstractCegarLoop]: Abstraction has has 208 places, 639 transitions, 4919 flow [2024-11-08 17:15:33,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 153.16666666666666) internal successors, (919), 6 states have internal predecessors, (919), 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) [2024-11-08 17:15:33,229 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:15:33,230 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:15:33,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 17:15:33,230 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-11-08 17:15:33,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:15:33,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1234360076, now seen corresponding path program 1 times [2024-11-08 17:15:33,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:15:33,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320497100] [2024-11-08 17:15:33,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:15:33,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:15:33,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:15:34,184 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-08 17:15:34,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:15:34,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320497100] [2024-11-08 17:15:34,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320497100] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:15:34,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110058917] [2024-11-08 17:15:34,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:15:34,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:15:34,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15841361-a7a3-4a15-95cd-2ea8febbceae/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:15:34,188 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15841361-a7a3-4a15-95cd-2ea8febbceae/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:15:34,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15841361-a7a3-4a15-95cd-2ea8febbceae/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 17:15:34,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:15:34,311 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-08 17:15:34,317 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:15:34,509 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-08 17:15:34,510 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-08 17:15:34,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-08 17:15:34,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2024-11-08 17:15:34,750 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:15:34,750 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2024-11-08 17:15:34,797 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:15:34,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2024-11-08 17:15:35,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 45 [2024-11-08 17:15:35,169 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-08 17:15:35,169 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:15:35,238 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (and (forall ((v_ArrVal_267 (Array Int Int))) (= |c_ULTIMATE.start_main_#t~nondet16#1| (select (select (store |c_#race| c_t_funThread1of2ForFork0_~p~0.base v_ArrVal_267) |c_ULTIMATE.start_main_~#t_ids~0#1.base|) (+ .cse0 |c_ULTIMATE.start_main_~#t_ids~0#1.offset| 1)))) (forall ((v_ArrVal_267 (Array Int Int))) (= (select (select (store |c_#race| c_t_funThread1of2ForFork0_~p~0.base v_ArrVal_267) |c_ULTIMATE.start_main_~#t_ids~0#1.base|) (+ .cse0 3 |c_ULTIMATE.start_main_~#t_ids~0#1.offset|)) |c_ULTIMATE.start_main_#t~nondet16#1|)) (forall ((v_ArrVal_267 (Array Int Int))) (= (select (select (store |c_#race| c_t_funThread1of2ForFork0_~p~0.base v_ArrVal_267) |c_ULTIMATE.start_main_~#t_ids~0#1.base|) (+ .cse0 |c_ULTIMATE.start_main_~#t_ids~0#1.offset|)) |c_ULTIMATE.start_main_#t~nondet16#1|)) (forall ((v_ArrVal_267 (Array Int Int))) (= |c_ULTIMATE.start_main_#t~nondet16#1| (select (select (store |c_#race| c_t_funThread1of2ForFork0_~p~0.base v_ArrVal_267) |c_ULTIMATE.start_main_~#t_ids~0#1.base|) (+ .cse0 2 |c_ULTIMATE.start_main_~#t_ids~0#1.offset|)))))) is different from false [2024-11-08 17:15:35,442 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (and (forall ((v_ArrVal_267 (Array Int Int))) (= |c_ULTIMATE.start_main_#t~nondet16#1| (select (select (store |c_#race| |c_~#global~0.base| v_ArrVal_267) |c_ULTIMATE.start_main_~#t_ids~0#1.base|) (+ .cse0 2 |c_ULTIMATE.start_main_~#t_ids~0#1.offset|)))) (forall ((v_ArrVal_267 (Array Int Int))) (= (select (select (store |c_#race| |c_~#global~0.base| v_ArrVal_267) |c_ULTIMATE.start_main_~#t_ids~0#1.base|) (+ .cse0 3 |c_ULTIMATE.start_main_~#t_ids~0#1.offset|)) |c_ULTIMATE.start_main_#t~nondet16#1|)) (forall ((v_ArrVal_267 (Array Int Int))) (= (select (select (store |c_#race| |c_~#global~0.base| v_ArrVal_267) |c_ULTIMATE.start_main_~#t_ids~0#1.base|) (+ .cse0 |c_ULTIMATE.start_main_~#t_ids~0#1.offset|)) |c_ULTIMATE.start_main_#t~nondet16#1|)) (forall ((v_ArrVal_267 (Array Int Int))) (= |c_ULTIMATE.start_main_#t~nondet16#1| (select (select (store |c_#race| |c_~#global~0.base| v_ArrVal_267) |c_ULTIMATE.start_main_~#t_ids~0#1.base|) (+ .cse0 |c_ULTIMATE.start_main_~#t_ids~0#1.offset| 1)))))) is different from false [2024-11-08 17:15:35,720 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (let ((.cse2 (+ .cse1 3 |c_ULTIMATE.start_main_~#t_ids~0#1.offset|))) (let ((.cse0 (store |c_#race| |c_ULTIMATE.start_main_~#t_ids~0#1.base| (store (select |c_#race| |c_ULTIMATE.start_main_~#t_ids~0#1.base|) .cse2 |c_ULTIMATE.start_main_#t~nondet16#1|)))) (and (forall ((v_ArrVal_267 (Array Int Int))) (= (select (select (store .cse0 |c_~#global~0.base| v_ArrVal_267) |c_ULTIMATE.start_main_~#t_ids~0#1.base|) (+ .cse1 |c_ULTIMATE.start_main_~#t_ids~0#1.offset|)) |c_ULTIMATE.start_main_#t~nondet16#1|)) (forall ((v_ArrVal_267 (Array Int Int))) (= (select (select (store .cse0 |c_~#global~0.base| v_ArrVal_267) |c_ULTIMATE.start_main_~#t_ids~0#1.base|) (+ .cse1 2 |c_ULTIMATE.start_main_~#t_ids~0#1.offset|)) |c_ULTIMATE.start_main_#t~nondet16#1|)) (forall ((v_ArrVal_267 (Array Int Int))) (= (select (select (store .cse0 |c_~#global~0.base| v_ArrVal_267) |c_ULTIMATE.start_main_~#t_ids~0#1.base|) .cse2) |c_ULTIMATE.start_main_#t~nondet16#1|)) (forall ((v_ArrVal_267 (Array Int Int))) (= |c_ULTIMATE.start_main_#t~nondet16#1| (select (select (store .cse0 |c_~#global~0.base| v_ArrVal_267) |c_ULTIMATE.start_main_~#t_ids~0#1.base|) (+ .cse1 |c_ULTIMATE.start_main_~#t_ids~0#1.offset| 1)))))))) is different from false [2024-11-08 17:15:36,002 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:15:36,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 51 treesize of output 67 [2024-11-08 17:15:36,016 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:15:36,016 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 111 treesize of output 35 [2024-11-08 17:15:36,034 INFO L349 Elim1Store]: treesize reduction 51, result has 1.9 percent of original size [2024-11-08 17:15:36,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 50 treesize of output 1 [2024-11-08 17:15:36,044 INFO L349 Elim1Store]: treesize reduction 51, result has 1.9 percent of original size [2024-11-08 17:15:36,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 51 treesize of output 1 [2024-11-08 17:15:36,055 INFO L349 Elim1Store]: treesize reduction 51, result has 1.9 percent of original size [2024-11-08 17:15:36,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 51 treesize of output 1 [2024-11-08 17:15:42,256 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 2 times theorem prover too weak. 7 trivial. 1 not checked. [2024-11-08 17:15:42,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110058917] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:15:42,257 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:15:42,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2024-11-08 17:15:42,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230780637] [2024-11-08 17:15:42,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:15:42,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-08 17:15:42,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:15:42,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-08 17:15:42,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=229, Unknown=17, NotChecked=102, Total=420 [2024-11-08 17:15:42,474 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 239 [2024-11-08 17:15:42,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 639 transitions, 4919 flow. Second operand has 21 states, 21 states have (on average 107.28571428571429) internal successors, (2253), 21 states have internal predecessors, (2253), 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) [2024-11-08 17:15:42,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:15:42,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 239 [2024-11-08 17:15:42,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand