./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_36-indirect_racefree.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_1b995e04-1744-49cd-bae0-39af49246590/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b995e04-1744-49cd-bae0-39af49246590/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_1b995e04-1744-49cd-bae0-39af49246590/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b995e04-1744-49cd-bae0-39af49246590/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_36-indirect_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b995e04-1744-49cd-bae0-39af49246590/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_1b995e04-1744-49cd-bae0-39af49246590/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 3eff698bae51c39e8a3a4c763800dbda831dabb73a169fa31c8e326faee47cd8 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:57:35,553 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:57:35,685 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b995e04-1744-49cd-bae0-39af49246590/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-19 07:57:35,695 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:57:35,696 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:57:35,737 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:57:35,738 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:57:35,738 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:57:35,739 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:57:35,745 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:57:35,746 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:57:35,747 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:57:35,747 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:57:35,749 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:57:35,750 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:57:35,750 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:57:35,751 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:57:35,751 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:57:35,751 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:57:35,752 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:57:35,752 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:57:35,753 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:57:35,753 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-19 07:57:35,754 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:57:35,754 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:57:35,754 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:57:35,755 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:57:35,756 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:57:35,756 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:57:35,757 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:57:35,758 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:57:35,758 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:57:35,758 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:57:35,759 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:57:35,759 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:57:35,759 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:57:35,759 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:57:35,760 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:57:35,760 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:57:35,760 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:57:35,760 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:57:35,761 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_1b995e04-1744-49cd-bae0-39af49246590/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b995e04-1744-49cd-bae0-39af49246590/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3eff698bae51c39e8a3a4c763800dbda831dabb73a169fa31c8e326faee47cd8 [2023-11-19 07:57:36,107 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:57:36,139 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:57:36,142 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:57:36,144 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:57:36,144 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:57:36,146 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b995e04-1744-49cd-bae0-39af49246590/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/goblint-regression/28-race_reach_36-indirect_racefree.i [2023-11-19 07:57:39,278 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:57:39,593 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:57:39,594 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b995e04-1744-49cd-bae0-39af49246590/sv-benchmarks/c/goblint-regression/28-race_reach_36-indirect_racefree.i [2023-11-19 07:57:39,611 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b995e04-1744-49cd-bae0-39af49246590/bin/uautomizer-verify-uCwYo4JHxu/data/6b3c26625/b63ae58f0ced489295620b16bd7230a2/FLAGf12f67308 [2023-11-19 07:57:39,630 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b995e04-1744-49cd-bae0-39af49246590/bin/uautomizer-verify-uCwYo4JHxu/data/6b3c26625/b63ae58f0ced489295620b16bd7230a2 [2023-11-19 07:57:39,636 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:57:39,638 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:57:39,642 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:57:39,642 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:57:39,648 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:57:39,649 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:57:39" (1/1) ... [2023-11-19 07:57:39,650 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46002ce8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:39, skipping insertion in model container [2023-11-19 07:57:39,650 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:57:39" (1/1) ... [2023-11-19 07:57:39,706 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:57:40,151 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:57:40,168 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:57:40,257 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:57:40,301 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:57:40,302 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:40 WrapperNode [2023-11-19 07:57:40,302 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:57:40,303 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:57:40,303 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:57:40,303 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:57:40,312 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:40" (1/1) ... [2023-11-19 07:57:40,347 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:40" (1/1) ... [2023-11-19 07:57:40,378 INFO L138 Inliner]: procedures = 170, calls = 38, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 106 [2023-11-19 07:57:40,378 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:57:40,379 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:57:40,379 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:57:40,379 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:57:40,387 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:40" (1/1) ... [2023-11-19 07:57:40,388 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:40" (1/1) ... [2023-11-19 07:57:40,392 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:40" (1/1) ... [2023-11-19 07:57:40,393 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:40" (1/1) ... [2023-11-19 07:57:40,405 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:40" (1/1) ... [2023-11-19 07:57:40,409 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:40" (1/1) ... [2023-11-19 07:57:40,418 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:40" (1/1) ... [2023-11-19 07:57:40,420 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:40" (1/1) ... [2023-11-19 07:57:40,424 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:57:40,425 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:57:40,425 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:57:40,425 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:57:40,432 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:40" (1/1) ... [2023-11-19 07:57:40,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:57:40,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b995e04-1744-49cd-bae0-39af49246590/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:40,469 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b995e04-1744-49cd-bae0-39af49246590/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:57:40,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b995e04-1744-49cd-bae0-39af49246590/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:57:40,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:57:40,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:57:40,524 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 07:57:40,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:57:40,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:57:40,525 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-19 07:57:40,525 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-19 07:57:40,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:57:40,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:57:40,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:57:40,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:57:40,528 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 07:57:40,730 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:57:40,733 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:57:41,099 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:57:41,110 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:57:41,110 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-11-19 07:57:41,115 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:57:41 BoogieIcfgContainer [2023-11-19 07:57:41,115 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:57:41,139 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:57:41,139 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:57:41,143 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:57:41,143 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:57:39" (1/3) ... [2023-11-19 07:57:41,144 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67187cc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:57:41, skipping insertion in model container [2023-11-19 07:57:41,144 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:40" (2/3) ... [2023-11-19 07:57:41,145 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67187cc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:57:41, skipping insertion in model container [2023-11-19 07:57:41,145 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:57:41" (3/3) ... [2023-11-19 07:57:41,146 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_36-indirect_racefree.i [2023-11-19 07:57:41,156 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:57:41,168 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:57:41,168 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-11-19 07:57:41,168 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:57:41,263 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-19 07:57:41,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 171 places, 181 transitions, 369 flow [2023-11-19 07:57:41,426 INFO L124 PetriNetUnfolderBase]: 19/240 cut-off events. [2023-11-19 07:57:41,426 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:57:41,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 240 events. 19/240 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 770 event pairs, 0 based on Foata normal form. 0/203 useless extension candidates. Maximal degree in co-relation 130. Up to 4 conditions per place. [2023-11-19 07:57:41,434 INFO L82 GeneralOperation]: Start removeDead. Operand has 171 places, 181 transitions, 369 flow [2023-11-19 07:57:41,441 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 171 places, 181 transitions, 369 flow [2023-11-19 07:57:41,445 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:57:41,456 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 171 places, 181 transitions, 369 flow [2023-11-19 07:57:41,459 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 171 places, 181 transitions, 369 flow [2023-11-19 07:57:41,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 171 places, 181 transitions, 369 flow [2023-11-19 07:57:41,519 INFO L124 PetriNetUnfolderBase]: 19/240 cut-off events. [2023-11-19 07:57:41,519 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:57:41,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 240 events. 19/240 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 770 event pairs, 0 based on Foata normal form. 0/203 useless extension candidates. Maximal degree in co-relation 130. Up to 4 conditions per place. [2023-11-19 07:57:41,530 INFO L119 LiptonReduction]: Number of co-enabled transitions 8580 [2023-11-19 07:57:45,756 INFO L134 LiptonReduction]: Checked pairs total: 36319 [2023-11-19 07:57:45,756 INFO L136 LiptonReduction]: Total number of compositions: 143 [2023-11-19 07:57:45,772 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:57:45,779 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;@5c92d6f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:57:45,779 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-11-19 07:57:45,780 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:57:45,781 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-19 07:57:45,781 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:57:45,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:45,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 07:57:45,782 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2023-11-19 07:57:45,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:45,787 INFO L85 PathProgramCache]: Analyzing trace with hash 656, now seen corresponding path program 1 times [2023-11-19 07:57:45,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:45,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337949484] [2023-11-19 07:57:45,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:45,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:45,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:45,911 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 07:57:45,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:45,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337949484] [2023-11-19 07:57:45,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337949484] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:45,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:45,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 07:57:45,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562399482] [2023-11-19 07:57:45,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:45,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:57:45,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:45,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:57:45,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:57:45,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 324 [2023-11-19 07:57:45,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 76 transitions, 159 flow. Second operand has 2 states, 2 states have (on average 166.5) internal successors, (333), 2 states have internal predecessors, (333), 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 07:57:45,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:45,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 324 [2023-11-19 07:57:45,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:46,132 INFO L124 PetriNetUnfolderBase]: 121/507 cut-off events. [2023-11-19 07:57:46,132 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:57:46,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 788 conditions, 507 events. 121/507 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2547 event pairs, 120 based on Foata normal form. 24/490 useless extension candidates. Maximal degree in co-relation 741. Up to 276 conditions per place. [2023-11-19 07:57:46,140 INFO L140 encePairwiseOnDemand]: 309/324 looper letters, 26 selfloop transitions, 0 changer transitions 0/61 dead transitions. [2023-11-19 07:57:46,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 61 transitions, 181 flow [2023-11-19 07:57:46,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:57:46,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:57:46,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 373 transitions. [2023-11-19 07:57:46,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5756172839506173 [2023-11-19 07:57:46,165 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 373 transitions. [2023-11-19 07:57:46,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 373 transitions. [2023-11-19 07:57:46,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:46,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 373 transitions. [2023-11-19 07:57:46,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 186.5) internal successors, (373), 2 states have internal predecessors, (373), 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 07:57:46,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 324.0) internal successors, (972), 3 states have internal predecessors, (972), 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 07:57:46,180 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 324.0) internal successors, (972), 3 states have internal predecessors, (972), 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 07:57:46,182 INFO L175 Difference]: Start difference. First operand has 69 places, 76 transitions, 159 flow. Second operand 2 states and 373 transitions. [2023-11-19 07:57:46,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 61 transitions, 181 flow [2023-11-19 07:57:46,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 61 transitions, 181 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:57:46,188 INFO L231 Difference]: Finished difference. Result has 64 places, 61 transitions, 129 flow [2023-11-19 07:57:46,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=324, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=129, PETRI_PLACES=64, PETRI_TRANSITIONS=61} [2023-11-19 07:57:46,194 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -5 predicate places. [2023-11-19 07:57:46,194 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 61 transitions, 129 flow [2023-11-19 07:57:46,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 166.5) internal successors, (333), 2 states have internal predecessors, (333), 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 07:57:46,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:46,195 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-19 07:57:46,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:57:46,196 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2023-11-19 07:57:46,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:46,197 INFO L85 PathProgramCache]: Analyzing trace with hash -2022452804, now seen corresponding path program 1 times [2023-11-19 07:57:46,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:46,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232653539] [2023-11-19 07:57:46,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:46,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:46,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:57:46,266 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:57:46,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:57:46,357 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:57:46,357 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:57:46,359 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2023-11-19 07:57:46,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (17 of 19 remaining) [2023-11-19 07:57:46,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 19 remaining) [2023-11-19 07:57:46,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (15 of 19 remaining) [2023-11-19 07:57:46,363 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (14 of 19 remaining) [2023-11-19 07:57:46,363 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (13 of 19 remaining) [2023-11-19 07:57:46,364 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (12 of 19 remaining) [2023-11-19 07:57:46,365 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 19 remaining) [2023-11-19 07:57:46,365 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 19 remaining) [2023-11-19 07:57:46,365 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 19 remaining) [2023-11-19 07:57:46,366 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (8 of 19 remaining) [2023-11-19 07:57:46,367 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 19 remaining) [2023-11-19 07:57:46,367 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (6 of 19 remaining) [2023-11-19 07:57:46,368 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 19 remaining) [2023-11-19 07:57:46,368 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 19 remaining) [2023-11-19 07:57:46,369 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 19 remaining) [2023-11-19 07:57:46,369 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 19 remaining) [2023-11-19 07:57:46,374 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 19 remaining) [2023-11-19 07:57:46,374 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 19 remaining) [2023-11-19 07:57:46,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:57:46,375 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-19 07:57:46,378 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:57:46,379 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 07:57:46,440 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 07:57:46,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 234 places, 249 transitions, 514 flow [2023-11-19 07:57:46,553 INFO L124 PetriNetUnfolderBase]: 34/399 cut-off events. [2023-11-19 07:57:46,553 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 07:57:46,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 411 conditions, 399 events. 34/399 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1608 event pairs, 0 based on Foata normal form. 0/336 useless extension candidates. Maximal degree in co-relation 242. Up to 8 conditions per place. [2023-11-19 07:57:46,556 INFO L82 GeneralOperation]: Start removeDead. Operand has 234 places, 249 transitions, 514 flow [2023-11-19 07:57:46,562 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 234 places, 249 transitions, 514 flow [2023-11-19 07:57:46,562 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:57:46,563 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 234 places, 249 transitions, 514 flow [2023-11-19 07:57:46,566 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 234 places, 249 transitions, 514 flow [2023-11-19 07:57:46,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 234 places, 249 transitions, 514 flow [2023-11-19 07:57:46,662 INFO L124 PetriNetUnfolderBase]: 34/399 cut-off events. [2023-11-19 07:57:46,663 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 07:57:46,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 411 conditions, 399 events. 34/399 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1608 event pairs, 0 based on Foata normal form. 0/336 useless extension candidates. Maximal degree in co-relation 242. Up to 8 conditions per place. [2023-11-19 07:57:46,689 INFO L119 LiptonReduction]: Number of co-enabled transitions 27324 [2023-11-19 07:57:50,986 INFO L134 LiptonReduction]: Checked pairs total: 161595 [2023-11-19 07:57:50,986 INFO L136 LiptonReduction]: Total number of compositions: 153 [2023-11-19 07:57:50,989 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:57:50,990 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;@5c92d6f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:57:50,990 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-11-19 07:57:50,991 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:57:50,992 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-19 07:57:50,992 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:57:50,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:50,992 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 07:57:50,993 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-19 07:57:50,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:50,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1125, now seen corresponding path program 1 times [2023-11-19 07:57:50,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:50,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782927816] [2023-11-19 07:57:50,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:50,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:51,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:51,007 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 07:57:51,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:51,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782927816] [2023-11-19 07:57:51,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782927816] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:51,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:51,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 07:57:51,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343932719] [2023-11-19 07:57:51,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:51,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:57:51,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:51,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:57:51,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:57:51,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 402 [2023-11-19 07:57:51,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 131 transitions, 278 flow. Second operand has 2 states, 2 states have (on average 226.5) internal successors, (453), 2 states have internal predecessors, (453), 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 07:57:51,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:51,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 402 [2023-11-19 07:57:51,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:52,434 INFO L124 PetriNetUnfolderBase]: 3147/8596 cut-off events. [2023-11-19 07:57:52,435 INFO L125 PetriNetUnfolderBase]: For 75/75 co-relation queries the response was YES. [2023-11-19 07:57:52,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13711 conditions, 8596 events. 3147/8596 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 77917 event pairs, 3132 based on Foata normal form. 725/8442 useless extension candidates. Maximal degree in co-relation 9717. Up to 5043 conditions per place. [2023-11-19 07:57:52,504 INFO L140 encePairwiseOnDemand]: 383/402 looper letters, 39 selfloop transitions, 0 changer transitions 0/112 dead transitions. [2023-11-19 07:57:52,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 112 transitions, 318 flow [2023-11-19 07:57:52,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:57:52,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:57:52,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 510 transitions. [2023-11-19 07:57:52,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6343283582089553 [2023-11-19 07:57:52,509 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 510 transitions. [2023-11-19 07:57:52,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 510 transitions. [2023-11-19 07:57:52,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:52,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 510 transitions. [2023-11-19 07:57:52,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 255.0) internal successors, (510), 2 states have internal predecessors, (510), 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 07:57:52,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 402.0) internal successors, (1206), 3 states have internal predecessors, (1206), 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 07:57:52,519 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 402.0) internal successors, (1206), 3 states have internal predecessors, (1206), 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 07:57:52,519 INFO L175 Difference]: Start difference. First operand has 119 places, 131 transitions, 278 flow. Second operand 2 states and 510 transitions. [2023-11-19 07:57:52,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 112 transitions, 318 flow [2023-11-19 07:57:52,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 112 transitions, 318 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:57:52,528 INFO L231 Difference]: Finished difference. Result has 116 places, 112 transitions, 240 flow [2023-11-19 07:57:52,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=240, PETRI_PLACES=116, PETRI_TRANSITIONS=112} [2023-11-19 07:57:52,529 INFO L281 CegarLoopForPetriNet]: 119 programPoint places, -3 predicate places. [2023-11-19 07:57:52,530 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 112 transitions, 240 flow [2023-11-19 07:57:52,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 226.5) internal successors, (453), 2 states have internal predecessors, (453), 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 07:57:52,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:52,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:52,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:57:52,531 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-19 07:57:52,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:52,532 INFO L85 PathProgramCache]: Analyzing trace with hash -837864432, now seen corresponding path program 1 times [2023-11-19 07:57:52,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:52,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712469473] [2023-11-19 07:57:52,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:52,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:52,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:52,647 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 07:57:52,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:52,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712469473] [2023-11-19 07:57:52,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712469473] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:52,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:52,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:57:52,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831635361] [2023-11-19 07:57:52,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:52,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:57:52,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:52,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:57:52,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:57:52,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 402 [2023-11-19 07:57:52,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 112 transitions, 240 flow. Second operand has 3 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 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 07:57:52,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:52,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 402 [2023-11-19 07:57:52,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:54,440 INFO L124 PetriNetUnfolderBase]: 4793/11763 cut-off events. [2023-11-19 07:57:54,441 INFO L125 PetriNetUnfolderBase]: For 89/89 co-relation queries the response was YES. [2023-11-19 07:57:54,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19467 conditions, 11763 events. 4793/11763 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 103671 event pairs, 1833 based on Foata normal form. 0/10914 useless extension candidates. Maximal degree in co-relation 19462. Up to 7431 conditions per place. [2023-11-19 07:57:54,533 INFO L140 encePairwiseOnDemand]: 396/402 looper letters, 58 selfloop transitions, 2 changer transitions 0/123 dead transitions. [2023-11-19 07:57:54,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 123 transitions, 387 flow [2023-11-19 07:57:54,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:57:54,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:57:54,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 703 transitions. [2023-11-19 07:57:54,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5829187396351575 [2023-11-19 07:57:54,538 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 703 transitions. [2023-11-19 07:57:54,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 703 transitions. [2023-11-19 07:57:54,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:54,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 703 transitions. [2023-11-19 07:57:54,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 234.33333333333334) internal successors, (703), 3 states have internal predecessors, (703), 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 07:57:54,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:54,547 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:54,547 INFO L175 Difference]: Start difference. First operand has 116 places, 112 transitions, 240 flow. Second operand 3 states and 703 transitions. [2023-11-19 07:57:54,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 123 transitions, 387 flow [2023-11-19 07:57:54,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 123 transitions, 387 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:57:54,555 INFO L231 Difference]: Finished difference. Result has 115 places, 110 transitions, 246 flow [2023-11-19 07:57:54,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=246, PETRI_PLACES=115, PETRI_TRANSITIONS=110} [2023-11-19 07:57:54,559 INFO L281 CegarLoopForPetriNet]: 119 programPoint places, -4 predicate places. [2023-11-19 07:57:54,559 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 110 transitions, 246 flow [2023-11-19 07:57:54,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 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 07:57:54,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:54,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:54,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:57:54,561 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-19 07:57:54,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:54,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1911284935, now seen corresponding path program 1 times [2023-11-19 07:57:54,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:54,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507121544] [2023-11-19 07:57:54,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:54,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:54,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:54,684 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 07:57:54,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:54,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507121544] [2023-11-19 07:57:54,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507121544] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:54,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:54,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:57:54,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828987599] [2023-11-19 07:57:54,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:54,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:57:54,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:54,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:57:54,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:57:54,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 402 [2023-11-19 07:57:54,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 110 transitions, 246 flow. Second operand has 3 states, 3 states have (on average 221.0) internal successors, (663), 3 states have internal predecessors, (663), 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 07:57:54,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:54,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 402 [2023-11-19 07:57:54,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:56,076 INFO L124 PetriNetUnfolderBase]: 3257/9174 cut-off events. [2023-11-19 07:57:56,077 INFO L125 PetriNetUnfolderBase]: For 227/227 co-relation queries the response was YES. [2023-11-19 07:57:56,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14697 conditions, 9174 events. 3257/9174 cut-off events. For 227/227 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 86040 event pairs, 1551 based on Foata normal form. 0/8469 useless extension candidates. Maximal degree in co-relation 14691. Up to 5251 conditions per place. [2023-11-19 07:57:56,133 INFO L140 encePairwiseOnDemand]: 399/402 looper letters, 52 selfloop transitions, 2 changer transitions 0/124 dead transitions. [2023-11-19 07:57:56,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 124 transitions, 382 flow [2023-11-19 07:57:56,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:57:56,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:57:56,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 714 transitions. [2023-11-19 07:57:56,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5920398009950248 [2023-11-19 07:57:56,137 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 714 transitions. [2023-11-19 07:57:56,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 714 transitions. [2023-11-19 07:57:56,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:56,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 714 transitions. [2023-11-19 07:57:56,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 238.0) internal successors, (714), 3 states have internal predecessors, (714), 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 07:57:56,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:56,146 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:56,146 INFO L175 Difference]: Start difference. First operand has 115 places, 110 transitions, 246 flow. Second operand 3 states and 714 transitions. [2023-11-19 07:57:56,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 124 transitions, 382 flow [2023-11-19 07:57:56,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 124 transitions, 382 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:57:56,150 INFO L231 Difference]: Finished difference. Result has 118 places, 111 transitions, 258 flow [2023-11-19 07:57:56,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=258, PETRI_PLACES=118, PETRI_TRANSITIONS=111} [2023-11-19 07:57:56,152 INFO L281 CegarLoopForPetriNet]: 119 programPoint places, -1 predicate places. [2023-11-19 07:57:56,152 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 111 transitions, 258 flow [2023-11-19 07:57:56,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 221.0) internal successors, (663), 3 states have internal predecessors, (663), 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 07:57:56,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:56,153 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-19 07:57:56,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:57:56,153 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-19 07:57:56,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:56,154 INFO L85 PathProgramCache]: Analyzing trace with hash 64049987, now seen corresponding path program 1 times [2023-11-19 07:57:56,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:56,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355081457] [2023-11-19 07:57:56,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:56,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:56,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:57:56,174 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:57:56,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:57:56,196 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:57:56,196 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:57:56,196 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2023-11-19 07:57:56,197 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (23 of 25 remaining) [2023-11-19 07:57:56,197 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (22 of 25 remaining) [2023-11-19 07:57:56,197 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (21 of 25 remaining) [2023-11-19 07:57:56,197 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (20 of 25 remaining) [2023-11-19 07:57:56,198 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (19 of 25 remaining) [2023-11-19 07:57:56,198 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (18 of 25 remaining) [2023-11-19 07:57:56,198 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (17 of 25 remaining) [2023-11-19 07:57:56,198 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (16 of 25 remaining) [2023-11-19 07:57:56,198 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (15 of 25 remaining) [2023-11-19 07:57:56,199 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 25 remaining) [2023-11-19 07:57:56,199 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (13 of 25 remaining) [2023-11-19 07:57:56,199 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (12 of 25 remaining) [2023-11-19 07:57:56,199 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 25 remaining) [2023-11-19 07:57:56,199 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 25 remaining) [2023-11-19 07:57:56,200 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 25 remaining) [2023-11-19 07:57:56,200 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (8 of 25 remaining) [2023-11-19 07:57:56,200 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 25 remaining) [2023-11-19 07:57:56,200 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (6 of 25 remaining) [2023-11-19 07:57:56,200 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 25 remaining) [2023-11-19 07:57:56,201 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 25 remaining) [2023-11-19 07:57:56,201 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 25 remaining) [2023-11-19 07:57:56,201 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 25 remaining) [2023-11-19 07:57:56,201 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 25 remaining) [2023-11-19 07:57:56,201 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 25 remaining) [2023-11-19 07:57:56,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:57:56,202 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-19 07:57:56,203 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:57:56,203 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-19 07:57:56,247 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-19 07:57:56,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 297 places, 317 transitions, 661 flow [2023-11-19 07:57:56,373 INFO L124 PetriNetUnfolderBase]: 54/605 cut-off events. [2023-11-19 07:57:56,374 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-19 07:57:56,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 630 conditions, 605 events. 54/605 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2750 event pairs, 1 based on Foata normal form. 0/510 useless extension candidates. Maximal degree in co-relation 407. Up to 16 conditions per place. [2023-11-19 07:57:56,378 INFO L82 GeneralOperation]: Start removeDead. Operand has 297 places, 317 transitions, 661 flow [2023-11-19 07:57:56,385 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 297 places, 317 transitions, 661 flow [2023-11-19 07:57:56,385 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:57:56,385 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 297 places, 317 transitions, 661 flow [2023-11-19 07:57:56,386 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 297 places, 317 transitions, 661 flow [2023-11-19 07:57:56,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 297 places, 317 transitions, 661 flow [2023-11-19 07:57:56,501 INFO L124 PetriNetUnfolderBase]: 54/605 cut-off events. [2023-11-19 07:57:56,502 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-19 07:57:56,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 630 conditions, 605 events. 54/605 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2750 event pairs, 1 based on Foata normal form. 0/510 useless extension candidates. Maximal degree in co-relation 407. Up to 16 conditions per place. [2023-11-19 07:57:56,542 INFO L119 LiptonReduction]: Number of co-enabled transitions 54648 [2023-11-19 07:58:01,048 INFO L134 LiptonReduction]: Checked pairs total: 318523 [2023-11-19 07:58:01,049 INFO L136 LiptonReduction]: Total number of compositions: 177 [2023-11-19 07:58:01,051 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:58:01,052 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;@5c92d6f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:58:01,053 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2023-11-19 07:58:01,054 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:58:01,054 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-19 07:58:01,054 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:58:01,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:01,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 07:58:01,055 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2023-11-19 07:58:01,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:01,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1689, now seen corresponding path program 1 times [2023-11-19 07:58:01,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:01,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623913172] [2023-11-19 07:58:01,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:01,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:01,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:01,064 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 07:58:01,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:01,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623913172] [2023-11-19 07:58:01,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623913172] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:01,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:01,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 07:58:01,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278354433] [2023-11-19 07:58:01,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:01,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:58:01,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:01,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:58:01,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:58:01,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 494 [2023-11-19 07:58:01,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 180 transitions, 387 flow. Second operand has 2 states, 2 states have (on average 286.5) internal successors, (573), 2 states have internal predecessors, (573), 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 07:58:01,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:01,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 494 [2023-11-19 07:58:01,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:18,570 INFO L124 PetriNetUnfolderBase]: 65024/131148 cut-off events. [2023-11-19 07:58:18,571 INFO L125 PetriNetUnfolderBase]: For 1935/1935 co-relation queries the response was YES. [2023-11-19 07:58:18,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222920 conditions, 131148 events. 65024/131148 cut-off events. For 1935/1935 co-relation queries the response was YES. Maximal size of possible extension queue 2679. Compared 1485311 event pairs, 64813 based on Foata normal form. 15377/135588 useless extension candidates. Maximal degree in co-relation 120538. Up to 90463 conditions per place. [2023-11-19 07:58:19,531 INFO L140 encePairwiseOnDemand]: 469/494 looper letters, 53 selfloop transitions, 0 changer transitions 0/155 dead transitions. [2023-11-19 07:58:19,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 155 transitions, 443 flow [2023-11-19 07:58:19,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:58:19,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:58:19,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 650 transitions. [2023-11-19 07:58:19,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6578947368421053 [2023-11-19 07:58:19,535 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 650 transitions. [2023-11-19 07:58:19,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 650 transitions. [2023-11-19 07:58:19,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:19,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 650 transitions. [2023-11-19 07:58:19,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 325.0) internal successors, (650), 2 states have internal predecessors, (650), 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 07:58:19,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 494.0) internal successors, (1482), 3 states have internal predecessors, (1482), 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 07:58:19,543 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 494.0) internal successors, (1482), 3 states have internal predecessors, (1482), 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 07:58:19,543 INFO L175 Difference]: Start difference. First operand has 163 places, 180 transitions, 387 flow. Second operand 2 states and 650 transitions. [2023-11-19 07:58:19,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 155 transitions, 443 flow [2023-11-19 07:58:19,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 155 transitions, 443 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:58:19,553 INFO L231 Difference]: Finished difference. Result has 160 places, 155 transitions, 337 flow [2023-11-19 07:58:19,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=494, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=337, PETRI_PLACES=160, PETRI_TRANSITIONS=155} [2023-11-19 07:58:19,557 INFO L281 CegarLoopForPetriNet]: 163 programPoint places, -3 predicate places. [2023-11-19 07:58:19,557 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 155 transitions, 337 flow [2023-11-19 07:58:19,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 286.5) internal successors, (573), 2 states have internal predecessors, (573), 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 07:58:19,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:19,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:19,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:58:19,559 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2023-11-19 07:58:19,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:19,560 INFO L85 PathProgramCache]: Analyzing trace with hash -694005174, now seen corresponding path program 1 times [2023-11-19 07:58:19,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:19,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934657656] [2023-11-19 07:58:19,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:19,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:19,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:19,622 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 07:58:19,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:19,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934657656] [2023-11-19 07:58:19,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934657656] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:19,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:19,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:58:19,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445166168] [2023-11-19 07:58:19,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:19,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:58:19,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:19,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:58:19,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:58:19,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 494 [2023-11-19 07:58:19,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 155 transitions, 337 flow. Second operand has 3 states, 3 states have (on average 269.3333333333333) internal successors, (808), 3 states have internal predecessors, (808), 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 07:58:19,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:19,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 494 [2023-11-19 07:58:19,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand