./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/10_fmaxsym_cas.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e0e259-3e7c-489f-a602-8b0a1d4b8372/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e0e259-3e7c-489f-a602-8b0a1d4b8372/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e0e259-3e7c-489f-a602-8b0a1d4b8372/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e0e259-3e7c-489f-a602-8b0a1d4b8372/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/10_fmaxsym_cas.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e0e259-3e7c-489f-a602-8b0a1d4b8372/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e0e259-3e7c-489f-a602-8b0a1d4b8372/bin/uautomizer-verify-uCwYo4JHxu --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 a11d0cba01cb66911cac56797cb36d325dc008752ffb55c25c965bd0644c21c3 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:07:02,447 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:07:02,519 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e0e259-3e7c-489f-a602-8b0a1d4b8372/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-19 08:07:02,525 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:07:02,526 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:07:02,553 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:07:02,554 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:07:02,555 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:07:02,556 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:07:02,556 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:07:02,557 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:07:02,558 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:07:02,559 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:07:02,559 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:07:02,560 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:07:02,560 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:07:02,561 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:07:02,561 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:07:02,562 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:07:02,563 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:07:02,563 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:07:02,564 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:07:02,564 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-19 08:07:02,565 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 08:07:02,565 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:07:02,566 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:07:02,566 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:07:02,567 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:07:02,567 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:07:02,567 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:07:02,568 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:07:02,568 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:07:02,569 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:07:02,569 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:07:02,569 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:07:02,570 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:07:02,570 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:07:02,570 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:07:02,570 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:07:02,570 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:07:02,571 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:07:02,571 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_d8e0e259-3e7c-489f-a602-8b0a1d4b8372/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e0e259-3e7c-489f-a602-8b0a1d4b8372/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a11d0cba01cb66911cac56797cb36d325dc008752ffb55c25c965bd0644c21c3 [2023-11-19 08:07:02,841 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:07:02,873 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:07:02,879 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:07:02,881 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:07:02,884 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:07:02,886 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e0e259-3e7c-489f-a602-8b0a1d4b8372/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-ext/10_fmaxsym_cas.i [2023-11-19 08:07:05,989 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:07:06,269 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:07:06,269 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e0e259-3e7c-489f-a602-8b0a1d4b8372/sv-benchmarks/c/pthread-ext/10_fmaxsym_cas.i [2023-11-19 08:07:06,285 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e0e259-3e7c-489f-a602-8b0a1d4b8372/bin/uautomizer-verify-uCwYo4JHxu/data/e3dff73ae/a0d6cfc8bb5d47afbda912bb673dee81/FLAGae5e4350f [2023-11-19 08:07:06,301 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e0e259-3e7c-489f-a602-8b0a1d4b8372/bin/uautomizer-verify-uCwYo4JHxu/data/e3dff73ae/a0d6cfc8bb5d47afbda912bb673dee81 [2023-11-19 08:07:06,304 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:07:06,305 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:07:06,307 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:07:06,307 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:07:06,324 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:07:06,324 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:07:06" (1/1) ... [2023-11-19 08:07:06,325 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@575d859f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:06, skipping insertion in model container [2023-11-19 08:07:06,326 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:07:06" (1/1) ... [2023-11-19 08:07:06,392 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:07:06,872 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:07:06,886 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:07:06,972 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:07:07,033 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:07:07,033 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:07 WrapperNode [2023-11-19 08:07:07,033 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:07:07,035 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:07:07,035 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:07:07,035 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:07:07,045 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:07" (1/1) ... [2023-11-19 08:07:07,085 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:07" (1/1) ... [2023-11-19 08:07:07,124 INFO L138 Inliner]: procedures = 170, calls = 33, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 145 [2023-11-19 08:07:07,124 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:07:07,125 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:07:07,126 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:07:07,126 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:07:07,144 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:07" (1/1) ... [2023-11-19 08:07:07,149 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:07" (1/1) ... [2023-11-19 08:07:07,160 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:07" (1/1) ... [2023-11-19 08:07:07,161 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:07" (1/1) ... [2023-11-19 08:07:07,214 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:07" (1/1) ... [2023-11-19 08:07:07,219 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:07" (1/1) ... [2023-11-19 08:07:07,221 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:07" (1/1) ... [2023-11-19 08:07:07,223 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:07" (1/1) ... [2023-11-19 08:07:07,227 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:07:07,238 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:07:07,238 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:07:07,238 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:07:07,239 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:07" (1/1) ... [2023-11-19 08:07:07,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:07:07,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e0e259-3e7c-489f-a602-8b0a1d4b8372/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:07:07,287 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e0e259-3e7c-489f-a602-8b0a1d4b8372/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:07:07,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e0e259-3e7c-489f-a602-8b0a1d4b8372/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:07:07,322 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 08:07:07,322 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-19 08:07:07,322 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-19 08:07:07,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 08:07:07,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:07:07,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 08:07:07,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 08:07:07,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:07:07,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:07:07,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:07:07,325 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 08:07:07,464 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:07:07,466 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:07:07,852 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:07:08,073 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:07:08,073 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-19 08:07:08,078 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:07:08 BoogieIcfgContainer [2023-11-19 08:07:08,078 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:07:08,081 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:07:08,081 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:07:08,085 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:07:08,085 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:07:06" (1/3) ... [2023-11-19 08:07:08,086 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fea69a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:07:08, skipping insertion in model container [2023-11-19 08:07:08,087 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:07" (2/3) ... [2023-11-19 08:07:08,087 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fea69a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:07:08, skipping insertion in model container [2023-11-19 08:07:08,087 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:07:08" (3/3) ... [2023-11-19 08:07:08,089 INFO L112 eAbstractionObserver]: Analyzing ICFG 10_fmaxsym_cas.i [2023-11-19 08:07:08,099 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 08:07:08,111 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:07:08,111 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-19 08:07:08,112 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 08:07:08,204 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 08:07:08,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 126 transitions, 256 flow [2023-11-19 08:07:08,324 INFO L124 PetriNetUnfolderBase]: 12/137 cut-off events. [2023-11-19 08:07:08,324 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:07:08,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 137 events. 12/137 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 159 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 104. Up to 4 conditions per place. [2023-11-19 08:07:08,332 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 126 transitions, 256 flow [2023-11-19 08:07:08,340 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 126 transitions, 256 flow [2023-11-19 08:07:08,351 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:07:08,369 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 126 transitions, 256 flow [2023-11-19 08:07:08,372 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 118 places, 126 transitions, 256 flow [2023-11-19 08:07:08,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 126 transitions, 256 flow [2023-11-19 08:07:08,417 INFO L124 PetriNetUnfolderBase]: 12/137 cut-off events. [2023-11-19 08:07:08,417 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:07:08,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 137 events. 12/137 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 159 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 104. Up to 4 conditions per place. [2023-11-19 08:07:08,422 INFO L119 LiptonReduction]: Number of co-enabled transitions 2548 [2023-11-19 08:07:19,852 INFO L134 LiptonReduction]: Checked pairs total: 2918 [2023-11-19 08:07:19,858 INFO L136 LiptonReduction]: Total number of compositions: 143 [2023-11-19 08:07:19,874 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:07:19,881 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;@7d8bfd18, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:07:19,882 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-19 08:07:19,887 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:07:19,887 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2023-11-19 08:07:19,887 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:07:19,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:07:19,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 08:07:19,889 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2023-11-19 08:07:19,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:19,894 INFO L85 PathProgramCache]: Analyzing trace with hash 624309704, now seen corresponding path program 1 times [2023-11-19 08:07:19,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:19,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242595546] [2023-11-19 08:07:19,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:19,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:20,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:20,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:07:20,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:20,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242595546] [2023-11-19 08:07:20,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242595546] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:20,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:07:20,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:07:20,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233889644] [2023-11-19 08:07:20,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:20,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 08:07:20,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:20,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 08:07:20,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:07:20,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 269 [2023-11-19 08:07:20,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 25 transitions, 54 flow. Second operand has 2 states, 2 states have (on average 112.5) internal successors, (225), 2 states have internal predecessors, (225), 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) [2023-11-19 08:07:20,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:07:20,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 269 [2023-11-19 08:07:20,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:07:20,267 INFO L124 PetriNetUnfolderBase]: 25/55 cut-off events. [2023-11-19 08:07:20,268 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:07:20,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 55 events. 25/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 108 event pairs, 16 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 102. Up to 55 conditions per place. [2023-11-19 08:07:20,271 INFO L140 encePairwiseOnDemand]: 260/269 looper letters, 15 selfloop transitions, 0 changer transitions 0/16 dead transitions. [2023-11-19 08:07:20,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 16 transitions, 66 flow [2023-11-19 08:07:20,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 08:07:20,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 08:07:20,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 244 transitions. [2023-11-19 08:07:20,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45353159851301117 [2023-11-19 08:07:20,294 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 244 transitions. [2023-11-19 08:07:20,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 244 transitions. [2023-11-19 08:07:20,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:07:20,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 244 transitions. [2023-11-19 08:07:20,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 122.0) internal successors, (244), 2 states have internal predecessors, (244), 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) [2023-11-19 08:07:20,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 269.0) internal successors, (807), 3 states have internal predecessors, (807), 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) [2023-11-19 08:07:20,314 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 269.0) internal successors, (807), 3 states have internal predecessors, (807), 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) [2023-11-19 08:07:20,316 INFO L175 Difference]: Start difference. First operand has 24 places, 25 transitions, 54 flow. Second operand 2 states and 244 transitions. [2023-11-19 08:07:20,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 16 transitions, 66 flow [2023-11-19 08:07:20,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 16 transitions, 66 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 08:07:20,324 INFO L231 Difference]: Finished difference. Result has 17 places, 16 transitions, 36 flow [2023-11-19 08:07:20,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=36, PETRI_PLACES=17, PETRI_TRANSITIONS=16} [2023-11-19 08:07:20,334 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -7 predicate places. [2023-11-19 08:07:20,334 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 16 transitions, 36 flow [2023-11-19 08:07:20,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 112.5) internal successors, (225), 2 states have internal predecessors, (225), 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) [2023-11-19 08:07:20,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:07:20,335 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-19 08:07:20,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:07:20,336 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2023-11-19 08:07:20,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:20,339 INFO L85 PathProgramCache]: Analyzing trace with hash -2121370890, now seen corresponding path program 1 times [2023-11-19 08:07:20,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:20,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317453945] [2023-11-19 08:07:20,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:20,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:20,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:07:20,404 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:07:20,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:07:20,444 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:07:20,444 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 08:07:20,446 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-11-19 08:07:20,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2023-11-19 08:07:20,449 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2023-11-19 08:07:20,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2023-11-19 08:07:20,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2023-11-19 08:07:20,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2023-11-19 08:07:20,451 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2023-11-19 08:07:20,451 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2023-11-19 08:07:20,451 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2023-11-19 08:07:20,452 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2023-11-19 08:07:20,452 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2023-11-19 08:07:20,452 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2023-11-19 08:07:20,453 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2023-11-19 08:07:20,453 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2023-11-19 08:07:20,453 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2023-11-19 08:07:20,454 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2023-11-19 08:07:20,454 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2023-11-19 08:07:20,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 08:07:20,455 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-19 08:07:20,458 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 08:07:20,459 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 08:07:20,528 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 08:07:20,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 202 places, 218 transitions, 446 flow [2023-11-19 08:07:20,588 INFO L124 PetriNetUnfolderBase]: 23/242 cut-off events. [2023-11-19 08:07:20,588 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 08:07:20,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 250 conditions, 242 events. 23/242 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 569 event pairs, 0 based on Foata normal form. 0/200 useless extension candidates. Maximal degree in co-relation 195. Up to 6 conditions per place. [2023-11-19 08:07:20,593 INFO L82 GeneralOperation]: Start removeDead. Operand has 202 places, 218 transitions, 446 flow [2023-11-19 08:07:20,597 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 202 places, 218 transitions, 446 flow [2023-11-19 08:07:20,597 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:07:20,598 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 202 places, 218 transitions, 446 flow [2023-11-19 08:07:20,598 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 202 places, 218 transitions, 446 flow [2023-11-19 08:07:20,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 202 places, 218 transitions, 446 flow [2023-11-19 08:07:20,666 INFO L124 PetriNetUnfolderBase]: 23/242 cut-off events. [2023-11-19 08:07:20,666 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 08:07:20,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 250 conditions, 242 events. 23/242 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 569 event pairs, 0 based on Foata normal form. 0/200 useless extension candidates. Maximal degree in co-relation 195. Up to 6 conditions per place. [2023-11-19 08:07:20,685 INFO L119 LiptonReduction]: Number of co-enabled transitions 21840 [2023-11-19 08:07:28,693 INFO L134 LiptonReduction]: Checked pairs total: 72315 [2023-11-19 08:07:28,694 INFO L136 LiptonReduction]: Total number of compositions: 187 [2023-11-19 08:07:28,696 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:07:28,700 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;@7d8bfd18, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:07:28,700 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-11-19 08:07:28,705 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:07:28,706 INFO L124 PetriNetUnfolderBase]: 0/24 cut-off events. [2023-11-19 08:07:28,706 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 08:07:28,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:07:28,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:07:28,707 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-11-19 08:07:28,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:28,707 INFO L85 PathProgramCache]: Analyzing trace with hash -309331859, now seen corresponding path program 1 times [2023-11-19 08:07:28,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:28,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534928569] [2023-11-19 08:07:28,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:28,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:28,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:29,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:07:29,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:29,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534928569] [2023-11-19 08:07:29,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534928569] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:29,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:07:29,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:07:29,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947868369] [2023-11-19 08:07:29,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:29,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:07:29,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:29,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:07:29,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:07:30,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 405 [2023-11-19 08:07:30,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 86 transitions, 182 flow. Second operand has 6 states, 6 states have (on average 177.66666666666666) internal successors, (1066), 6 states have internal predecessors, (1066), 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) [2023-11-19 08:07:30,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:07:30,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 405 [2023-11-19 08:07:30,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:07:31,303 INFO L124 PetriNetUnfolderBase]: 870/2321 cut-off events. [2023-11-19 08:07:31,303 INFO L125 PetriNetUnfolderBase]: For 59/59 co-relation queries the response was YES. [2023-11-19 08:07:31,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3739 conditions, 2321 events. 870/2321 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 17301 event pairs, 316 based on Foata normal form. 90/2135 useless extension candidates. Maximal degree in co-relation 2170. Up to 893 conditions per place. [2023-11-19 08:07:31,322 INFO L140 encePairwiseOnDemand]: 383/405 looper letters, 87 selfloop transitions, 11 changer transitions 0/138 dead transitions. [2023-11-19 08:07:31,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 138 transitions, 502 flow [2023-11-19 08:07:31,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:07:31,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 08:07:31,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1202 transitions. [2023-11-19 08:07:31,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49465020576131685 [2023-11-19 08:07:31,329 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1202 transitions. [2023-11-19 08:07:31,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1202 transitions. [2023-11-19 08:07:31,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:07:31,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1202 transitions. [2023-11-19 08:07:31,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 200.33333333333334) internal successors, (1202), 6 states have internal predecessors, (1202), 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) [2023-11-19 08:07:31,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 405.0) internal successors, (2835), 7 states have internal predecessors, (2835), 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) [2023-11-19 08:07:31,345 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 405.0) internal successors, (2835), 7 states have internal predecessors, (2835), 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) [2023-11-19 08:07:31,345 INFO L175 Difference]: Start difference. First operand has 81 places, 86 transitions, 182 flow. Second operand 6 states and 1202 transitions. [2023-11-19 08:07:31,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 138 transitions, 502 flow [2023-11-19 08:07:31,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 138 transitions, 502 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 08:07:31,350 INFO L231 Difference]: Finished difference. Result has 82 places, 83 transitions, 236 flow [2023-11-19 08:07:31,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=405, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=236, PETRI_PLACES=82, PETRI_TRANSITIONS=83} [2023-11-19 08:07:31,351 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 1 predicate places. [2023-11-19 08:07:31,352 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 83 transitions, 236 flow [2023-11-19 08:07:31,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 177.66666666666666) internal successors, (1066), 6 states have internal predecessors, (1066), 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) [2023-11-19 08:07:31,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:07:31,353 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-19 08:07:31,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 08:07:31,354 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-11-19 08:07:31,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:31,354 INFO L85 PathProgramCache]: Analyzing trace with hash 775546977, now seen corresponding path program 1 times [2023-11-19 08:07:31,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:31,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484584019] [2023-11-19 08:07:31,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:31,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:31,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:07:31,369 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:07:31,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:07:31,388 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:07:31,388 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 08:07:31,389 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2023-11-19 08:07:31,389 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 25 remaining) [2023-11-19 08:07:31,389 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 25 remaining) [2023-11-19 08:07:31,389 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (21 of 25 remaining) [2023-11-19 08:07:31,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (20 of 25 remaining) [2023-11-19 08:07:31,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (19 of 25 remaining) [2023-11-19 08:07:31,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (18 of 25 remaining) [2023-11-19 08:07:31,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (17 of 25 remaining) [2023-11-19 08:07:31,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (16 of 25 remaining) [2023-11-19 08:07:31,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 25 remaining) [2023-11-19 08:07:31,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 25 remaining) [2023-11-19 08:07:31,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (13 of 25 remaining) [2023-11-19 08:07:31,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 25 remaining) [2023-11-19 08:07:31,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 25 remaining) [2023-11-19 08:07:31,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (10 of 25 remaining) [2023-11-19 08:07:31,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 25 remaining) [2023-11-19 08:07:31,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (8 of 25 remaining) [2023-11-19 08:07:31,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 25 remaining) [2023-11-19 08:07:31,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 25 remaining) [2023-11-19 08:07:31,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (5 of 25 remaining) [2023-11-19 08:07:31,394 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 25 remaining) [2023-11-19 08:07:31,394 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 25 remaining) [2023-11-19 08:07:31,394 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (2 of 25 remaining) [2023-11-19 08:07:31,394 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (1 of 25 remaining) [2023-11-19 08:07:31,395 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 25 remaining) [2023-11-19 08:07:31,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 08:07:31,395 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-19 08:07:31,396 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 08:07:31,396 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-19 08:07:31,472 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 08:07:31,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 286 places, 310 transitions, 638 flow [2023-11-19 08:07:31,553 INFO L124 PetriNetUnfolderBase]: 34/347 cut-off events. [2023-11-19 08:07:31,554 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-19 08:07:31,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 360 conditions, 347 events. 34/347 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1097 event pairs, 0 based on Foata normal form. 0/285 useless extension candidates. Maximal degree in co-relation 286. Up to 8 conditions per place. [2023-11-19 08:07:31,561 INFO L82 GeneralOperation]: Start removeDead. Operand has 286 places, 310 transitions, 638 flow [2023-11-19 08:07:31,604 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 286 places, 310 transitions, 638 flow [2023-11-19 08:07:31,604 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:07:31,605 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 286 places, 310 transitions, 638 flow [2023-11-19 08:07:31,605 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 286 places, 310 transitions, 638 flow [2023-11-19 08:07:31,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 286 places, 310 transitions, 638 flow [2023-11-19 08:07:31,676 INFO L124 PetriNetUnfolderBase]: 34/347 cut-off events. [2023-11-19 08:07:31,677 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-19 08:07:31,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 360 conditions, 347 events. 34/347 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1097 event pairs, 0 based on Foata normal form. 0/285 useless extension candidates. Maximal degree in co-relation 286. Up to 8 conditions per place. [2023-11-19 08:07:31,713 INFO L119 LiptonReduction]: Number of co-enabled transitions 57876 [2023-11-19 08:07:41,641 INFO L134 LiptonReduction]: Checked pairs total: 199287 [2023-11-19 08:07:41,641 INFO L136 LiptonReduction]: Total number of compositions: 260 [2023-11-19 08:07:41,643 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:07:41,644 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;@7d8bfd18, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:07:41,645 INFO L358 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2023-11-19 08:07:41,649 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:07:41,649 INFO L124 PetriNetUnfolderBase]: 0/24 cut-off events. [2023-11-19 08:07:41,650 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-19 08:07:41,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:07:41,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:07:41,650 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-11-19 08:07:41,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:41,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1914002541, now seen corresponding path program 1 times [2023-11-19 08:07:41,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:41,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898479753] [2023-11-19 08:07:41,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:41,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:41,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:41,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:07:41,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:41,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898479753] [2023-11-19 08:07:41,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898479753] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:41,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:07:41,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:07:41,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484518840] [2023-11-19 08:07:41,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:41,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:07:41,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:41,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:07:41,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:07:42,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 570 [2023-11-19 08:07:42,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 127 transitions, 272 flow. Second operand has 6 states, 6 states have (on average 255.66666666666666) internal successors, (1534), 6 states have internal predecessors, (1534), 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) [2023-11-19 08:07:42,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:07:42,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 570 [2023-11-19 08:07:42,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:07:48,476 INFO L124 PetriNetUnfolderBase]: 15930/33499 cut-off events. [2023-11-19 08:07:48,476 INFO L125 PetriNetUnfolderBase]: For 1486/1486 co-relation queries the response was YES. [2023-11-19 08:07:48,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55742 conditions, 33499 events. 15930/33499 cut-off events. For 1486/1486 co-relation queries the response was YES. Maximal size of possible extension queue 1199. Compared 342475 event pairs, 6256 based on Foata normal form. 1608/30310 useless extension candidates. Maximal degree in co-relation 23326. Up to 14041 conditions per place. [2023-11-19 08:07:48,753 INFO L140 encePairwiseOnDemand]: 541/570 looper letters, 148 selfloop transitions, 15 changer transitions 0/225 dead transitions. [2023-11-19 08:07:48,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 225 transitions, 842 flow [2023-11-19 08:07:48,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:07:48,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 08:07:48,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1765 transitions. [2023-11-19 08:07:48,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5160818713450293 [2023-11-19 08:07:48,760 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1765 transitions. [2023-11-19 08:07:48,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1765 transitions. [2023-11-19 08:07:48,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:07:48,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1765 transitions. [2023-11-19 08:07:48,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 294.1666666666667) internal successors, (1765), 6 states have internal predecessors, (1765), 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) [2023-11-19 08:07:48,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 570.0) internal successors, (3990), 7 states have internal predecessors, (3990), 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) [2023-11-19 08:07:48,777 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 570.0) internal successors, (3990), 7 states have internal predecessors, (3990), 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) [2023-11-19 08:07:48,777 INFO L175 Difference]: Start difference. First operand has 119 places, 127 transitions, 272 flow. Second operand 6 states and 1765 transitions. [2023-11-19 08:07:48,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 225 transitions, 842 flow [2023-11-19 08:07:48,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 225 transitions, 832 flow, removed 5 selfloop flow, removed 0 redundant places. [2023-11-19 08:07:48,790 INFO L231 Difference]: Finished difference. Result has 116 places, 122 transitions, 338 flow [2023-11-19 08:07:48,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=570, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=338, PETRI_PLACES=116, PETRI_TRANSITIONS=122} [2023-11-19 08:07:48,792 INFO L281 CegarLoopForPetriNet]: 119 programPoint places, -3 predicate places. [2023-11-19 08:07:48,792 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 122 transitions, 338 flow [2023-11-19 08:07:48,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 255.66666666666666) internal successors, (1534), 6 states have internal predecessors, (1534), 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) [2023-11-19 08:07:48,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:07:48,794 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:07:48,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 08:07:48,794 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-11-19 08:07:48,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:48,795 INFO L85 PathProgramCache]: Analyzing trace with hash -74754409, now seen corresponding path program 1 times [2023-11-19 08:07:48,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:48,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382156623] [2023-11-19 08:07:48,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:48,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:48,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:49,078 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 08:07:49,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:49,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382156623] [2023-11-19 08:07:49,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382156623] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:49,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:07:49,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:07:49,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975505656] [2023-11-19 08:07:49,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:49,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:07:49,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:49,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:07:49,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:07:49,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 570 [2023-11-19 08:07:49,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 122 transitions, 338 flow. Second operand has 6 states, 6 states have (on average 255.83333333333334) internal successors, (1535), 6 states have internal predecessors, (1535), 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) [2023-11-19 08:07:49,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:07:49,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 570 [2023-11-19 08:07:49,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand