./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-race-challenges/per-thread-array-ptr-race.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 527bcce2 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_daa59f0a-946a-4e15-90c9-5173b4a122bc/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa59f0a-946a-4e15-90c9-5173b4a122bc/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa59f0a-946a-4e15-90c9-5173b4a122bc/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa59f0a-946a-4e15-90c9-5173b4a122bc/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-race-challenges/per-thread-array-ptr-race.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa59f0a-946a-4e15-90c9-5173b4a122bc/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa59f0a-946a-4e15-90c9-5173b4a122bc/bin/uautomizer-verify-bycVGegfSx --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 3b48d748645bdde1aeeb8dea66ba49bd5b185acd910927d963305195a7958388 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:22:08,988 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:22:09,094 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa59f0a-946a-4e15-90c9-5173b4a122bc/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-21 22:22:09,101 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:22:09,102 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:22:09,141 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:22:09,142 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:22:09,143 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:22:09,146 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:22:09,151 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:22:09,153 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:22:09,154 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:22:09,154 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:22:09,156 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:22:09,157 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:22:09,158 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:22:09,158 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:22:09,158 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:22:09,159 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:22:09,160 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:22:09,160 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:22:09,161 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:22:09,162 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-21 22:22:09,164 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:22:09,164 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:22:09,165 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:22:09,165 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:22:09,166 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:22:09,167 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:22:09,167 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:22:09,169 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:22:09,169 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:22:09,169 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:22:09,170 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:22:09,170 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:22:09,170 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:22:09,171 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:22:09,171 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:22:09,171 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:22:09,171 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:22:09,172 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:22:09,172 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_daa59f0a-946a-4e15-90c9-5173b4a122bc/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa59f0a-946a-4e15-90c9-5173b4a122bc/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3b48d748645bdde1aeeb8dea66ba49bd5b185acd910927d963305195a7958388 [2023-11-21 22:22:09,574 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:22:09,616 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:22:09,619 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:22:09,620 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:22:09,621 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:22:09,623 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa59f0a-946a-4e15-90c9-5173b4a122bc/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/pthread-race-challenges/per-thread-array-ptr-race.i [2023-11-21 22:22:13,282 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:22:13,672 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:22:13,673 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa59f0a-946a-4e15-90c9-5173b4a122bc/sv-benchmarks/c/pthread-race-challenges/per-thread-array-ptr-race.i [2023-11-21 22:22:13,710 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa59f0a-946a-4e15-90c9-5173b4a122bc/bin/uautomizer-verify-bycVGegfSx/data/2a9d8673c/fac59fea7c194798b19bac98d2961134/FLAG4e3527f55 [2023-11-21 22:22:13,726 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa59f0a-946a-4e15-90c9-5173b4a122bc/bin/uautomizer-verify-bycVGegfSx/data/2a9d8673c/fac59fea7c194798b19bac98d2961134 [2023-11-21 22:22:13,729 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:22:13,731 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:22:13,733 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:22:13,733 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:22:13,739 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:22:13,740 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:22:13" (1/1) ... [2023-11-21 22:22:13,741 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@270b30d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:13, skipping insertion in model container [2023-11-21 22:22:13,742 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:22:13" (1/1) ... [2023-11-21 22:22:13,812 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:22:14,035 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 22:22:14,414 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:22:14,429 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:22:14,460 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 22:22:14,534 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:22:14,664 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:22:14,673 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:22:14,674 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:14 WrapperNode [2023-11-21 22:22:14,674 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:22:14,676 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:22:14,676 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:22:14,676 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:22:14,686 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:14" (1/1) ... [2023-11-21 22:22:14,710 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:14" (1/1) ... [2023-11-21 22:22:14,745 INFO L138 Inliner]: procedures = 266, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 99 [2023-11-21 22:22:14,746 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:22:14,746 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:22:14,747 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:22:14,747 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:22:14,758 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:14" (1/1) ... [2023-11-21 22:22:14,758 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:14" (1/1) ... [2023-11-21 22:22:14,769 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:14" (1/1) ... [2023-11-21 22:22:14,769 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:14" (1/1) ... [2023-11-21 22:22:14,784 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:14" (1/1) ... [2023-11-21 22:22:14,788 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:14" (1/1) ... [2023-11-21 22:22:14,790 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:14" (1/1) ... [2023-11-21 22:22:14,792 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:14" (1/1) ... [2023-11-21 22:22:14,796 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:22:14,797 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:22:14,798 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:22:14,798 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:22:14,799 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:14" (1/1) ... [2023-11-21 22:22:14,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:22:14,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa59f0a-946a-4e15-90c9-5173b4a122bc/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:22:14,841 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa59f0a-946a-4e15-90c9-5173b4a122bc/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:22:14,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa59f0a-946a-4e15-90c9-5173b4a122bc/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:22:14,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 22:22:14,891 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-21 22:22:14,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:22:14,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-21 22:22:14,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 22:22:14,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 22:22:14,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 22:22:14,894 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2023-11-21 22:22:14,894 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2023-11-21 22:22:14,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:22:14,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:22:14,899 WARN L212 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-21 22:22:15,053 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:22:15,055 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:22:15,487 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:22:15,502 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:22:15,502 INFO L308 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-21 22:22:15,504 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:22:15 BoogieIcfgContainer [2023-11-21 22:22:15,505 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:22:15,507 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:22:15,508 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:22:15,512 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:22:15,512 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:22:13" (1/3) ... [2023-11-21 22:22:15,513 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b00b069 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:22:15, skipping insertion in model container [2023-11-21 22:22:15,514 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:14" (2/3) ... [2023-11-21 22:22:15,514 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b00b069 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:22:15, skipping insertion in model container [2023-11-21 22:22:15,514 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:22:15" (3/3) ... [2023-11-21 22:22:15,516 INFO L112 eAbstractionObserver]: Analyzing ICFG per-thread-array-ptr-race.i [2023-11-21 22:22:15,527 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-21 22:22:15,540 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:22:15,540 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-11-21 22:22:15,541 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 22:22:15,627 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-21 22:22:15,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 122 transitions, 251 flow [2023-11-21 22:22:15,765 INFO L124 PetriNetUnfolderBase]: 6/188 cut-off events. [2023-11-21 22:22:15,765 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-21 22:22:15,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 188 events. 6/188 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 372 event pairs, 0 based on Foata normal form. 0/166 useless extension candidates. Maximal degree in co-relation 91. Up to 4 conditions per place. [2023-11-21 22:22:15,772 INFO L82 GeneralOperation]: Start removeDead. Operand has 121 places, 122 transitions, 251 flow [2023-11-21 22:22:15,780 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 121 places, 122 transitions, 251 flow [2023-11-21 22:22:15,791 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:22:15,801 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@a1a40f6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:22:15,801 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-11-21 22:22:15,816 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:22:15,817 INFO L124 PetriNetUnfolderBase]: 3/42 cut-off events. [2023-11-21 22:22:15,817 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:22:15,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:22:15,818 INFO L208 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] [2023-11-21 22:22:15,819 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-21 22:22:15,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:22:15,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1948619337, now seen corresponding path program 1 times [2023-11-21 22:22:15,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:22:15,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394106000] [2023-11-21 22:22:15,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:22:15,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:22:16,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:16,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:22:16,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:22:16,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394106000] [2023-11-21 22:22:16,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394106000] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:22:16,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:22:16,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:22:16,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057891565] [2023-11-21 22:22:16,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:22:16,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:22:16,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:22:16,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:22:16,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:22:17,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 122 [2023-11-21 22:22:17,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 122 transitions, 251 flow. Second operand has 6 states, 6 states have (on average 98.16666666666667) internal successors, (589), 6 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:17,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:22:17,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 122 [2023-11-21 22:22:17,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:22:17,735 INFO L124 PetriNetUnfolderBase]: 81/497 cut-off events. [2023-11-21 22:22:17,735 INFO L125 PetriNetUnfolderBase]: For 8/12 co-relation queries the response was YES. [2023-11-21 22:22:17,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 711 conditions, 497 events. 81/497 cut-off events. For 8/12 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2303 event pairs, 6 based on Foata normal form. 12/466 useless extension candidates. Maximal degree in co-relation 591. Up to 140 conditions per place. [2023-11-21 22:22:17,743 INFO L140 encePairwiseOnDemand]: 102/122 looper letters, 28 selfloop transitions, 24 changer transitions 1/149 dead transitions. [2023-11-21 22:22:17,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 149 transitions, 409 flow [2023-11-21 22:22:17,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:22:17,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:22:17,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 641 transitions. [2023-11-21 22:22:17,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8756830601092896 [2023-11-21 22:22:17,767 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 641 transitions. [2023-11-21 22:22:17,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 641 transitions. [2023-11-21 22:22:17,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:22:17,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 641 transitions. [2023-11-21 22:22:17,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 106.83333333333333) internal successors, (641), 6 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:17,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 122.0) internal successors, (854), 7 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:17,794 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 122.0) internal successors, (854), 7 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:17,798 INFO L175 Difference]: Start difference. First operand has 121 places, 122 transitions, 251 flow. Second operand 6 states and 641 transitions. [2023-11-21 22:22:17,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 149 transitions, 409 flow [2023-11-21 22:22:17,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 149 transitions, 409 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-21 22:22:17,819 INFO L231 Difference]: Finished difference. Result has 131 places, 142 transitions, 421 flow [2023-11-21 22:22:17,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=421, PETRI_PLACES=131, PETRI_TRANSITIONS=142} [2023-11-21 22:22:17,827 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, 10 predicate places. [2023-11-21 22:22:17,828 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 142 transitions, 421 flow [2023-11-21 22:22:17,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 98.16666666666667) internal successors, (589), 6 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:17,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:22:17,830 INFO L208 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] [2023-11-21 22:22:17,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:22:17,831 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-21 22:22:17,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:22:17,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1544078002, now seen corresponding path program 1 times [2023-11-21 22:22:17,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:22:17,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048696780] [2023-11-21 22:22:17,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:22:17,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:22:17,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:17,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:22:17,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:22:17,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048696780] [2023-11-21 22:22:17,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048696780] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:22:17,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:22:17,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:22:17,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196152318] [2023-11-21 22:22:17,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:22:17,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:22:17,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:22:17,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:22:17,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:22:18,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 122 [2023-11-21 22:22:18,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 142 transitions, 421 flow. Second operand has 5 states, 5 states have (on average 107.4) internal successors, (537), 5 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:18,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:22:18,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 122 [2023-11-21 22:22:18,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:22:18,219 INFO L124 PetriNetUnfolderBase]: 59/485 cut-off events. [2023-11-21 22:22:18,219 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2023-11-21 22:22:18,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 788 conditions, 485 events. 59/485 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2138 event pairs, 3 based on Foata normal form. 1/457 useless extension candidates. Maximal degree in co-relation 609. Up to 73 conditions per place. [2023-11-21 22:22:18,226 INFO L140 encePairwiseOnDemand]: 114/122 looper letters, 11 selfloop transitions, 6 changer transitions 1/147 dead transitions. [2023-11-21 22:22:18,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 147 transitions, 467 flow [2023-11-21 22:22:18,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:22:18,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:22:18,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 655 transitions. [2023-11-21 22:22:18,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.894808743169399 [2023-11-21 22:22:18,231 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 655 transitions. [2023-11-21 22:22:18,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 655 transitions. [2023-11-21 22:22:18,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:22:18,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 655 transitions. [2023-11-21 22:22:18,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 109.16666666666667) internal successors, (655), 6 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:18,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 122.0) internal successors, (854), 7 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:18,239 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 122.0) internal successors, (854), 7 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:18,239 INFO L175 Difference]: Start difference. First operand has 131 places, 142 transitions, 421 flow. Second operand 6 states and 655 transitions. [2023-11-21 22:22:18,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 147 transitions, 467 flow [2023-11-21 22:22:18,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 147 transitions, 467 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-21 22:22:18,251 INFO L231 Difference]: Finished difference. Result has 139 places, 146 transitions, 463 flow [2023-11-21 22:22:18,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=463, PETRI_PLACES=139, PETRI_TRANSITIONS=146} [2023-11-21 22:22:18,253 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, 18 predicate places. [2023-11-21 22:22:18,254 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 146 transitions, 463 flow [2023-11-21 22:22:18,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 107.4) internal successors, (537), 5 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:18,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:22:18,256 INFO L208 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] [2023-11-21 22:22:18,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 22:22:18,260 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-21 22:22:18,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:22:18,264 INFO L85 PathProgramCache]: Analyzing trace with hash -340307480, now seen corresponding path program 1 times [2023-11-21 22:22:18,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:22:18,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671936864] [2023-11-21 22:22:18,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:22:18,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:22:18,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:18,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:22:18,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:22:18,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671936864] [2023-11-21 22:22:18,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671936864] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:22:18,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:22:18,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:22:18,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710073698] [2023-11-21 22:22:18,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:22:18,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:22:18,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:22:18,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:22:18,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:22:19,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 122 [2023-11-21 22:22:19,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 146 transitions, 463 flow. Second operand has 6 states, 6 states have (on average 92.16666666666667) internal successors, (553), 6 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:19,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:22:19,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 122 [2023-11-21 22:22:19,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:22:19,499 INFO L124 PetriNetUnfolderBase]: 207/965 cut-off events. [2023-11-21 22:22:19,499 INFO L125 PetriNetUnfolderBase]: For 330/330 co-relation queries the response was YES. [2023-11-21 22:22:19,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1948 conditions, 965 events. 207/965 cut-off events. For 330/330 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 6042 event pairs, 9 based on Foata normal form. 0/904 useless extension candidates. Maximal degree in co-relation 1815. Up to 294 conditions per place. [2023-11-21 22:22:19,511 INFO L140 encePairwiseOnDemand]: 99/122 looper letters, 51 selfloop transitions, 50 changer transitions 4/206 dead transitions. [2023-11-21 22:22:19,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 206 transitions, 900 flow [2023-11-21 22:22:19,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:22:19,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:22:19,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 616 transitions. [2023-11-21 22:22:19,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8415300546448088 [2023-11-21 22:22:19,515 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 616 transitions. [2023-11-21 22:22:19,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 616 transitions. [2023-11-21 22:22:19,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:22:19,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 616 transitions. [2023-11-21 22:22:19,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 102.66666666666667) internal successors, (616), 6 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:19,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 122.0) internal successors, (854), 7 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:19,524 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 122.0) internal successors, (854), 7 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:19,524 INFO L175 Difference]: Start difference. First operand has 139 places, 146 transitions, 463 flow. Second operand 6 states and 616 transitions. [2023-11-21 22:22:19,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 206 transitions, 900 flow [2023-11-21 22:22:19,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 206 transitions, 898 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:22:19,536 INFO L231 Difference]: Finished difference. Result has 148 places, 192 transitions, 919 flow [2023-11-21 22:22:19,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=919, PETRI_PLACES=148, PETRI_TRANSITIONS=192} [2023-11-21 22:22:19,538 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, 27 predicate places. [2023-11-21 22:22:19,538 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 192 transitions, 919 flow [2023-11-21 22:22:19,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 92.16666666666667) internal successors, (553), 6 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:19,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:22:19,539 INFO L208 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] [2023-11-21 22:22:19,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 22:22:19,540 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-21 22:22:19,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:22:19,541 INFO L85 PathProgramCache]: Analyzing trace with hash 108159104, now seen corresponding path program 1 times [2023-11-21 22:22:19,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:22:19,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486373577] [2023-11-21 22:22:19,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:22:19,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:22:19,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:20,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:22:20,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:22:20,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486373577] [2023-11-21 22:22:20,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486373577] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:22:20,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:22:20,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:22:20,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729923912] [2023-11-21 22:22:20,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:22:20,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:22:20,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:22:20,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:22:20,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:22:20,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 122 [2023-11-21 22:22:20,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 192 transitions, 919 flow. Second operand has 6 states, 6 states have (on average 86.66666666666667) internal successors, (520), 6 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:20,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:22:20,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 122 [2023-11-21 22:22:20,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:22:21,062 INFO L124 PetriNetUnfolderBase]: 584/1937 cut-off events. [2023-11-21 22:22:21,062 INFO L125 PetriNetUnfolderBase]: For 1463/1580 co-relation queries the response was YES. [2023-11-21 22:22:21,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5122 conditions, 1937 events. 584/1937 cut-off events. For 1463/1580 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 14350 event pairs, 96 based on Foata normal form. 20/1852 useless extension candidates. Maximal degree in co-relation 4880. Up to 1013 conditions per place. [2023-11-21 22:22:21,084 INFO L140 encePairwiseOnDemand]: 91/122 looper letters, 98 selfloop transitions, 123 changer transitions 3/314 dead transitions. [2023-11-21 22:22:21,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 314 transitions, 1919 flow [2023-11-21 22:22:21,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:22:21,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:22:21,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 641 transitions. [2023-11-21 22:22:21,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8756830601092896 [2023-11-21 22:22:21,087 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 641 transitions. [2023-11-21 22:22:21,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 641 transitions. [2023-11-21 22:22:21,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:22:21,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 641 transitions. [2023-11-21 22:22:21,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 106.83333333333333) internal successors, (641), 6 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:21,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 122.0) internal successors, (854), 7 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:21,093 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 122.0) internal successors, (854), 7 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:21,094 INFO L175 Difference]: Start difference. First operand has 148 places, 192 transitions, 919 flow. Second operand 6 states and 641 transitions. [2023-11-21 22:22:21,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 314 transitions, 1919 flow [2023-11-21 22:22:21,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 314 transitions, 1907 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-11-21 22:22:21,172 INFO L231 Difference]: Finished difference. Result has 151 places, 311 transitions, 2033 flow [2023-11-21 22:22:21,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=907, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2033, PETRI_PLACES=151, PETRI_TRANSITIONS=311} [2023-11-21 22:22:21,175 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, 30 predicate places. [2023-11-21 22:22:21,176 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 311 transitions, 2033 flow [2023-11-21 22:22:21,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 86.66666666666667) internal successors, (520), 6 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:21,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:22:21,177 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2023-11-21 22:22:21,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 22:22:21,178 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-21 22:22:21,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:22:21,179 INFO L85 PathProgramCache]: Analyzing trace with hash 724220416, now seen corresponding path program 1 times [2023-11-21 22:22:21,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:22:21,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89883176] [2023-11-21 22:22:21,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:22:21,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:22:21,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:22,032 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:22:22,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:22:22,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89883176] [2023-11-21 22:22:22,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89883176] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:22:22,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832627543] [2023-11-21 22:22:22,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:22:22,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:22:22,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa59f0a-946a-4e15-90c9-5173b4a122bc/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:22:22,040 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa59f0a-946a-4e15-90c9-5173b4a122bc/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:22:22,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa59f0a-946a-4e15-90c9-5173b4a122bc/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 22:22:22,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:22,214 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 47 conjunts are in the unsatisfiable core [2023-11-21 22:22:22,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:22:22,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-21 22:22:22,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-21 22:22:23,308 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-21 22:22:23,375 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 19 treesize of output 18 [2023-11-21 22:22:23,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-11-21 22:22:23,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:22:23,564 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 30 treesize of output 21 [2023-11-21 22:22:23,650 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:22:23,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2023-11-21 22:22:23,719 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:22:23,720 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:22:23,802 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_190 (Array Int Int))) (= (select (select (store |c_#race| |c_ULTIMATE.start_main_~#datas~0#1.base| v_ArrVal_190) c_threadThread1of1ForFork0_~p~0.base) c_threadThread1of1ForFork0_~p~0.offset) |c_threadThread1of1ForFork0_#t~nondet4|)) (forall ((v_ArrVal_190 (Array Int Int))) (= (select (select (store |c_#race| |c_ULTIMATE.start_main_~#datas~0#1.base| v_ArrVal_190) c_threadThread1of1ForFork0_~p~0.base) (+ c_threadThread1of1ForFork0_~p~0.offset 2)) |c_threadThread1of1ForFork0_#t~nondet4|)) (forall ((v_ArrVal_190 (Array Int Int))) (= (select (select (store |c_#race| |c_ULTIMATE.start_main_~#datas~0#1.base| v_ArrVal_190) c_threadThread1of1ForFork0_~p~0.base) (+ c_threadThread1of1ForFork0_~p~0.offset 1)) |c_threadThread1of1ForFork0_#t~nondet4|))) is different from false [2023-11-21 22:22:28,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-21 22:22:28,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2023-11-21 22:22:28,738 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-11-21 22:22:28,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832627543] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:22:28,738 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:22:28,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 20, 17] total 44 [2023-11-21 22:22:28,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730486087] [2023-11-21 22:22:28,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:22:28,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-11-21 22:22:28,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:22:28,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-11-21 22:22:28,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1708, Unknown=16, NotChecked=84, Total=1980 [2023-11-21 22:22:29,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 122 [2023-11-21 22:22:29,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 311 transitions, 2033 flow. Second operand has 45 states, 45 states have (on average 32.77777777777778) internal successors, (1475), 45 states have internal predecessors, (1475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:29,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:22:29,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 122 [2023-11-21 22:22:29,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:22:39,859 INFO L124 PetriNetUnfolderBase]: 1227/3113 cut-off events. [2023-11-21 22:22:39,859 INFO L125 PetriNetUnfolderBase]: For 4541/4543 co-relation queries the response was YES. [2023-11-21 22:22:39,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10879 conditions, 3113 events. 1227/3113 cut-off events. For 4541/4543 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 21718 event pairs, 85 based on Foata normal form. 41/3112 useless extension candidates. Maximal degree in co-relation 10581. Up to 641 conditions per place. [2023-11-21 22:22:39,894 INFO L140 encePairwiseOnDemand]: 75/122 looper letters, 449 selfloop transitions, 255 changer transitions 81/816 dead transitions. [2023-11-21 22:22:39,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 816 transitions, 6291 flow [2023-11-21 22:22:39,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2023-11-21 22:22:39,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2023-11-21 22:22:39,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 2830 transitions. [2023-11-21 22:22:39,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3052200172562554 [2023-11-21 22:22:39,911 INFO L72 ComplementDD]: Start complementDD. Operand 76 states and 2830 transitions. [2023-11-21 22:22:39,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 76 states and 2830 transitions. [2023-11-21 22:22:39,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:22:39,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 76 states and 2830 transitions. [2023-11-21 22:22:39,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 77 states, 76 states have (on average 37.23684210526316) internal successors, (2830), 76 states have internal predecessors, (2830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:39,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 77 states, 77 states have (on average 122.0) internal successors, (9394), 77 states have internal predecessors, (9394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:39,952 INFO L81 ComplementDD]: Finished complementDD. Result has 77 states, 77 states have (on average 122.0) internal successors, (9394), 77 states have internal predecessors, (9394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:39,953 INFO L175 Difference]: Start difference. First operand has 151 places, 311 transitions, 2033 flow. Second operand 76 states and 2830 transitions. [2023-11-21 22:22:39,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 816 transitions, 6291 flow [2023-11-21 22:22:40,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 816 transitions, 6201 flow, removed 45 selfloop flow, removed 0 redundant places. [2023-11-21 22:22:40,018 INFO L231 Difference]: Finished difference. Result has 242 places, 454 transitions, 3622 flow [2023-11-21 22:22:40,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=1943, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=76, PETRI_FLOW=3622, PETRI_PLACES=242, PETRI_TRANSITIONS=454} [2023-11-21 22:22:40,020 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, 121 predicate places. [2023-11-21 22:22:40,020 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 454 transitions, 3622 flow [2023-11-21 22:22:40,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 32.77777777777778) internal successors, (1475), 45 states have internal predecessors, (1475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:40,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:22:40,022 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-11-21 22:22:40,039 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa59f0a-946a-4e15-90c9-5173b4a122bc/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-21 22:22:40,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa59f0a-946a-4e15-90c9-5173b4a122bc/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:22:40,230 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-21 22:22:40,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:22:40,231 INFO L85 PathProgramCache]: Analyzing trace with hash -2081500609, now seen corresponding path program 1 times [2023-11-21 22:22:40,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:22:40,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599087710] [2023-11-21 22:22:40,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:22:40,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:22:40,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:41,041 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:22:41,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:22:41,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599087710] [2023-11-21 22:22:41,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599087710] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:22:41,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853446276] [2023-11-21 22:22:41,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:22:41,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:22:41,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa59f0a-946a-4e15-90c9-5173b4a122bc/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:22:41,045 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa59f0a-946a-4e15-90c9-5173b4a122bc/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:22:41,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa59f0a-946a-4e15-90c9-5173b4a122bc/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 22:22:41,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:41,182 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-21 22:22:41,187 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:22:41,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-21 22:22:41,380 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-21 22:22:41,415 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-11-21 22:22:41,541 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:22:41,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 30 treesize of output 32 [2023-11-21 22:22:41,599 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:22:41,599 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2023-11-21 22:22:41,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:22:41,682 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 43 treesize of output 32 [2023-11-21 22:22:41,692 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:22:41,692 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:22:41,725 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_289 (Array Int Int))) (= (select (select (store |c_#race| c_threadThread1of1ForFork0_~p~0.base v_ArrVal_289) |c_ULTIMATE.start_main_~#datas~0#1.base|) |c_ULTIMATE.start_main_~#datas~0#1.offset|) 0)) (forall ((v_ArrVal_289 (Array Int Int))) (= (select (select (store |c_#race| c_threadThread1of1ForFork0_~p~0.base v_ArrVal_289) |c_ULTIMATE.start_main_~#datas~0#1.base|) (+ |c_ULTIMATE.start_main_~#datas~0#1.offset| 2)) 0)) (forall ((v_ArrVal_289 (Array Int Int))) (= (select (select (store |c_#race| c_threadThread1of1ForFork0_~p~0.base v_ArrVal_289) |c_ULTIMATE.start_main_~#datas~0#1.base|) (+ |c_ULTIMATE.start_main_~#datas~0#1.offset| 1)) 0)) (forall ((v_ArrVal_289 (Array Int Int))) (= (select (select (store |c_#race| c_threadThread1of1ForFork0_~p~0.base v_ArrVal_289) |c_ULTIMATE.start_main_~#datas~0#1.base|) (+ |c_ULTIMATE.start_main_~#datas~0#1.offset| 3)) 0))) is different from false [2023-11-21 22:22:41,755 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~#datas~0#1.offset| 3))) (let ((.cse0 (store |c_#race| |c_ULTIMATE.start_main_~#datas~0#1.base| (store (select |c_#race| |c_ULTIMATE.start_main_~#datas~0#1.base|) .cse1 0)))) (and (forall ((v_ArrVal_289 (Array Int Int))) (= (select (select (store .cse0 c_threadThread1of1ForFork0_~p~0.base v_ArrVal_289) |c_ULTIMATE.start_main_~#datas~0#1.base|) (+ |c_ULTIMATE.start_main_~#datas~0#1.offset| 2)) 0)) (forall ((v_ArrVal_289 (Array Int Int))) (= 0 (select (select (store .cse0 c_threadThread1of1ForFork0_~p~0.base v_ArrVal_289) |c_ULTIMATE.start_main_~#datas~0#1.base|) (+ |c_ULTIMATE.start_main_~#datas~0#1.offset| 1)))) (forall ((v_ArrVal_289 (Array Int Int))) (= (select (select (store .cse0 c_threadThread1of1ForFork0_~p~0.base v_ArrVal_289) |c_ULTIMATE.start_main_~#datas~0#1.base|) |c_ULTIMATE.start_main_~#datas~0#1.offset|) 0)) (forall ((v_ArrVal_289 (Array Int Int))) (= (select (select (store .cse0 c_threadThread1of1ForFork0_~p~0.base v_ArrVal_289) |c_ULTIMATE.start_main_~#datas~0#1.base|) .cse1) 0))))) is different from false [2023-11-21 22:22:49,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-21 22:22:49,091 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-11-21 22:22:49,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853446276] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:22:49,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:22:49,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 33 [2023-11-21 22:22:49,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168445540] [2023-11-21 22:22:49,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:22:49,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-21 22:22:49,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:22:49,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-21 22:22:49,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=855, Unknown=21, NotChecked=122, Total=1122 [2023-11-21 22:22:49,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 122 [2023-11-21 22:22:49,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 454 transitions, 3622 flow. Second operand has 34 states, 34 states have (on average 51.588235294117645) internal successors, (1754), 34 states have internal predecessors, (1754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:49,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:22:49,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 122 [2023-11-21 22:22:49,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:22:52,060 INFO L124 PetriNetUnfolderBase]: 973/2723 cut-off events. [2023-11-21 22:22:52,060 INFO L125 PetriNetUnfolderBase]: For 9368/9374 co-relation queries the response was YES. [2023-11-21 22:22:52,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11415 conditions, 2723 events. 973/2723 cut-off events. For 9368/9374 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 19511 event pairs, 221 based on Foata normal form. 25/2695 useless extension candidates. Maximal degree in co-relation 11087. Up to 1277 conditions per place. [2023-11-21 22:22:52,094 INFO L140 encePairwiseOnDemand]: 107/122 looper letters, 417 selfloop transitions, 42 changer transitions 13/560 dead transitions. [2023-11-21 22:22:52,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 560 transitions, 5146 flow [2023-11-21 22:22:52,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-21 22:22:52,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-21 22:22:52,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1071 transitions. [2023-11-21 22:22:52,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48770491803278687 [2023-11-21 22:22:52,102 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1071 transitions. [2023-11-21 22:22:52,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1071 transitions. [2023-11-21 22:22:52,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:22:52,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1071 transitions. [2023-11-21 22:22:52,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 59.5) internal successors, (1071), 18 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:52,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 122.0) internal successors, (2318), 19 states have internal predecessors, (2318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:52,114 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 122.0) internal successors, (2318), 19 states have internal predecessors, (2318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:52,114 INFO L175 Difference]: Start difference. First operand has 242 places, 454 transitions, 3622 flow. Second operand 18 states and 1071 transitions. [2023-11-21 22:22:52,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 560 transitions, 5146 flow [2023-11-21 22:22:52,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 560 transitions, 4921 flow, removed 57 selfloop flow, removed 22 redundant places. [2023-11-21 22:22:52,280 INFO L231 Difference]: Finished difference. Result has 230 places, 443 transitions, 3388 flow [2023-11-21 22:22:52,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=3405, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3388, PETRI_PLACES=230, PETRI_TRANSITIONS=443} [2023-11-21 22:22:52,282 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, 109 predicate places. [2023-11-21 22:22:52,282 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 443 transitions, 3388 flow [2023-11-21 22:22:52,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 51.588235294117645) internal successors, (1754), 34 states have internal predecessors, (1754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:52,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:22:52,283 INFO L208 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] [2023-11-21 22:22:52,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa59f0a-946a-4e15-90c9-5173b4a122bc/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-21 22:22:52,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa59f0a-946a-4e15-90c9-5173b4a122bc/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:22:52,496 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-21 22:22:52,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:22:52,497 INFO L85 PathProgramCache]: Analyzing trace with hash 946631182, now seen corresponding path program 1 times [2023-11-21 22:22:52,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:22:52,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103020323] [2023-11-21 22:22:52,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:22:52,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:22:52,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:53,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 22:22:53,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:22:53,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103020323] [2023-11-21 22:22:53,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103020323] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:22:53,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:22:53,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:22:53,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266774942] [2023-11-21 22:22:53,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:22:53,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:22:53,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:22:53,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:22:53,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:22:53,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 122 [2023-11-21 22:22:53,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 443 transitions, 3388 flow. Second operand has 6 states, 6 states have (on average 101.5) internal successors, (609), 6 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:53,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:22:53,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 122 [2023-11-21 22:22:53,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:22:54,044 INFO L124 PetriNetUnfolderBase]: 580/2124 cut-off events. [2023-11-21 22:22:54,045 INFO L125 PetriNetUnfolderBase]: For 5985/6031 co-relation queries the response was YES. [2023-11-21 22:22:54,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7605 conditions, 2124 events. 580/2124 cut-off events. For 5985/6031 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 16393 event pairs, 46 based on Foata normal form. 2/2098 useless extension candidates. Maximal degree in co-relation 7436. Up to 502 conditions per place. [2023-11-21 22:22:54,071 INFO L140 encePairwiseOnDemand]: 111/122 looper letters, 147 selfloop transitions, 37 changer transitions 19/483 dead transitions. [2023-11-21 22:22:54,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 483 transitions, 4180 flow [2023-11-21 22:22:54,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:22:54,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:22:54,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 642 transitions. [2023-11-21 22:22:54,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8770491803278688 [2023-11-21 22:22:54,074 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 642 transitions. [2023-11-21 22:22:54,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 642 transitions. [2023-11-21 22:22:54,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:22:54,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 642 transitions. [2023-11-21 22:22:54,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:54,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 122.0) internal successors, (854), 7 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:54,079 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 122.0) internal successors, (854), 7 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:54,080 INFO L175 Difference]: Start difference. First operand has 230 places, 443 transitions, 3388 flow. Second operand 6 states and 642 transitions. [2023-11-21 22:22:54,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 483 transitions, 4180 flow [2023-11-21 22:22:54,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 483 transitions, 4100 flow, removed 0 selfloop flow, removed 15 redundant places. [2023-11-21 22:22:54,159 INFO L231 Difference]: Finished difference. Result has 225 places, 464 transitions, 3768 flow [2023-11-21 22:22:54,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=3308, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3768, PETRI_PLACES=225, PETRI_TRANSITIONS=464} [2023-11-21 22:22:54,161 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, 104 predicate places. [2023-11-21 22:22:54,161 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 464 transitions, 3768 flow [2023-11-21 22:22:54,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 101.5) internal successors, (609), 6 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:54,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:22:54,162 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 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] [2023-11-21 22:22:54,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-21 22:22:54,163 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-21 22:22:54,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:22:54,163 INFO L85 PathProgramCache]: Analyzing trace with hash -2097273391, now seen corresponding path program 1 times [2023-11-21 22:22:54,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:22:54,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571760421] [2023-11-21 22:22:54,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:22:54,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:22:54,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:22:54,257 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:22:54,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:22:54,340 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:22:54,341 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 22:22:54,342 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2023-11-21 22:22:54,345 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (7 of 9 remaining) [2023-11-21 22:22:54,345 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (6 of 9 remaining) [2023-11-21 22:22:54,345 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (5 of 9 remaining) [2023-11-21 22:22:54,346 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (4 of 9 remaining) [2023-11-21 22:22:54,346 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (3 of 9 remaining) [2023-11-21 22:22:54,346 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (2 of 9 remaining) [2023-11-21 22:22:54,346 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 9 remaining) [2023-11-21 22:22:54,347 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 9 remaining) [2023-11-21 22:22:54,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-21 22:22:54,347 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:22:54,350 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-21 22:22:54,350 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-21 22:22:54,379 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-21 22:22:54,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 140 places, 140 transitions, 296 flow [2023-11-21 22:22:54,427 INFO L124 PetriNetUnfolderBase]: 11/335 cut-off events. [2023-11-21 22:22:54,428 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-21 22:22:54,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 347 conditions, 335 events. 11/335 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 762 event pairs, 0 based on Foata normal form. 0/296 useless extension candidates. Maximal degree in co-relation 190. Up to 8 conditions per place. [2023-11-21 22:22:54,429 INFO L82 GeneralOperation]: Start removeDead. Operand has 140 places, 140 transitions, 296 flow [2023-11-21 22:22:54,431 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 140 places, 140 transitions, 296 flow [2023-11-21 22:22:54,433 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:22:54,434 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@a1a40f6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:22:54,434 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-11-21 22:22:54,439 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:22:54,439 INFO L124 PetriNetUnfolderBase]: 3/42 cut-off events. [2023-11-21 22:22:54,439 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:22:54,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:22:54,439 INFO L208 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] [2023-11-21 22:22:54,440 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2023-11-21 22:22:54,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:22:54,440 INFO L85 PathProgramCache]: Analyzing trace with hash -709281591, now seen corresponding path program 1 times [2023-11-21 22:22:54,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:22:54,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284022109] [2023-11-21 22:22:54,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:22:54,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:22:54,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:54,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:22:54,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:22:54,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284022109] [2023-11-21 22:22:54,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284022109] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:22:54,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:22:54,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:22:54,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467800842] [2023-11-21 22:22:54,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:22:54,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:22:54,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:22:54,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:22:54,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:22:55,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 140 [2023-11-21 22:22:55,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 140 transitions, 296 flow. Second operand has 6 states, 6 states have (on average 110.16666666666667) internal successors, (661), 6 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:55,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:22:55,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 140 [2023-11-21 22:22:55,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:22:55,819 INFO L124 PetriNetUnfolderBase]: 1139/4013 cut-off events. [2023-11-21 22:22:55,819 INFO L125 PetriNetUnfolderBase]: For 115/203 co-relation queries the response was YES. [2023-11-21 22:22:55,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6043 conditions, 4013 events. 1139/4013 cut-off events. For 115/203 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 31826 event pairs, 192 based on Foata normal form. 74/3754 useless extension candidates. Maximal degree in co-relation 2969. Up to 1538 conditions per place. [2023-11-21 22:22:55,850 INFO L140 encePairwiseOnDemand]: 116/140 looper letters, 36 selfloop transitions, 43 changer transitions 1/188 dead transitions. [2023-11-21 22:22:55,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 188 transitions, 558 flow [2023-11-21 22:22:55,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:22:55,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:22:55,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 740 transitions. [2023-11-21 22:22:55,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8809523809523809 [2023-11-21 22:22:55,854 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 740 transitions. [2023-11-21 22:22:55,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 740 transitions. [2023-11-21 22:22:55,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:22:55,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 740 transitions. [2023-11-21 22:22:55,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 123.33333333333333) internal successors, (740), 6 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:55,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 140.0) internal successors, (980), 7 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:55,860 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 140.0) internal successors, (980), 7 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:55,860 INFO L175 Difference]: Start difference. First operand has 140 places, 140 transitions, 296 flow. Second operand 6 states and 740 transitions. [2023-11-21 22:22:55,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 188 transitions, 558 flow [2023-11-21 22:22:55,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 188 transitions, 558 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-21 22:22:55,866 INFO L231 Difference]: Finished difference. Result has 150 places, 179 transitions, 588 flow [2023-11-21 22:22:55,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=588, PETRI_PLACES=150, PETRI_TRANSITIONS=179} [2023-11-21 22:22:55,868 INFO L281 CegarLoopForPetriNet]: 140 programPoint places, 10 predicate places. [2023-11-21 22:22:55,868 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 179 transitions, 588 flow [2023-11-21 22:22:55,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 110.16666666666667) internal successors, (661), 6 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:55,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:22:55,869 INFO L208 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] [2023-11-21 22:22:55,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-21 22:22:55,870 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2023-11-21 22:22:55,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:22:55,870 INFO L85 PathProgramCache]: Analyzing trace with hash 2034740030, now seen corresponding path program 1 times [2023-11-21 22:22:55,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:22:55,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55054848] [2023-11-21 22:22:55,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:22:55,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:22:55,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:55,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:22:55,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:22:55,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55054848] [2023-11-21 22:22:55,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55054848] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:22:55,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:22:55,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:22:55,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865092833] [2023-11-21 22:22:55,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:22:55,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:22:55,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:22:55,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:22:55,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:22:56,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 140 [2023-11-21 22:22:56,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 179 transitions, 588 flow. Second operand has 5 states, 5 states have (on average 123.4) internal successors, (617), 5 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:56,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:22:56,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 140 [2023-11-21 22:22:56,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:22:56,606 INFO L124 PetriNetUnfolderBase]: 890/3527 cut-off events. [2023-11-21 22:22:56,606 INFO L125 PetriNetUnfolderBase]: For 563/567 co-relation queries the response was YES. [2023-11-21 22:22:56,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6149 conditions, 3527 events. 890/3527 cut-off events. For 563/567 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 28437 event pairs, 150 based on Foata normal form. 1/3305 useless extension candidates. Maximal degree in co-relation 3349. Up to 983 conditions per place. [2023-11-21 22:22:56,634 INFO L140 encePairwiseOnDemand]: 132/140 looper letters, 14 selfloop transitions, 6 changer transitions 1/185 dead transitions. [2023-11-21 22:22:56,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 185 transitions, 642 flow [2023-11-21 22:22:56,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:22:56,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:22:56,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 754 transitions. [2023-11-21 22:22:56,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8976190476190476 [2023-11-21 22:22:56,637 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 754 transitions. [2023-11-21 22:22:56,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 754 transitions. [2023-11-21 22:22:56,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:22:56,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 754 transitions. [2023-11-21 22:22:56,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 125.66666666666667) internal successors, (754), 6 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:56,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 140.0) internal successors, (980), 7 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:56,642 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 140.0) internal successors, (980), 7 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:56,643 INFO L175 Difference]: Start difference. First operand has 150 places, 179 transitions, 588 flow. Second operand 6 states and 754 transitions. [2023-11-21 22:22:56,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 185 transitions, 642 flow [2023-11-21 22:22:56,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 185 transitions, 642 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-21 22:22:56,652 INFO L231 Difference]: Finished difference. Result has 158 places, 184 transitions, 634 flow [2023-11-21 22:22:56,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=588, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=634, PETRI_PLACES=158, PETRI_TRANSITIONS=184} [2023-11-21 22:22:56,653 INFO L281 CegarLoopForPetriNet]: 140 programPoint places, 18 predicate places. [2023-11-21 22:22:56,654 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 184 transitions, 634 flow [2023-11-21 22:22:56,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 123.4) internal successors, (617), 5 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:56,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:22:56,655 INFO L208 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] [2023-11-21 22:22:56,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-21 22:22:56,655 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2023-11-21 22:22:56,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:22:56,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1985313640, now seen corresponding path program 1 times [2023-11-21 22:22:56,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:22:56,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007855819] [2023-11-21 22:22:56,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:22:56,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:22:56,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:56,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:22:56,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:22:56,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007855819] [2023-11-21 22:22:56,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007855819] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:22:56,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:22:56,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:22:56,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739788321] [2023-11-21 22:22:56,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:22:56,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:22:56,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:22:56,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:22:56,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:22:57,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 140 [2023-11-21 22:22:57,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 184 transitions, 634 flow. Second operand has 6 states, 6 states have (on average 104.16666666666667) internal successors, (625), 6 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:22:57,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:22:57,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 140 [2023-11-21 22:22:57,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand