./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_21-deref_read_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145a5285-19e7-4566-8d28-d3cb8822b0d9/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145a5285-19e7-4566-8d28-d3cb8822b0d9/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145a5285-19e7-4566-8d28-d3cb8822b0d9/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145a5285-19e7-4566-8d28-d3cb8822b0d9/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_21-deref_read_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145a5285-19e7-4566-8d28-d3cb8822b0d9/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145a5285-19e7-4566-8d28-d3cb8822b0d9/bin/uautomizer-verify-VRDe98Ueme --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 cb010ae024b402436affeb854f96a5f9e0df3d8ec2cfe8b3a7f33676b7169a2c --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:49:42,715 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:49:42,794 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145a5285-19e7-4566-8d28-d3cb8822b0d9/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-26 11:49:42,801 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:49:42,802 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:49:42,833 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:49:42,834 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:49:42,834 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:49:42,835 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:49:42,836 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:49:42,837 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:49:42,837 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:49:42,838 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:49:42,838 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:49:42,839 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:49:42,839 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:49:42,840 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:49:42,840 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:49:42,841 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:49:42,842 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:49:42,842 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:49:42,843 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:49:42,843 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-26 11:49:42,844 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:49:42,844 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:49:42,845 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:49:42,845 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:49:42,846 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:49:42,846 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:49:42,847 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:49:42,847 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:49:42,848 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:49:42,848 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:49:42,849 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:49:42,849 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:49:42,850 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:49:42,850 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:49:42,850 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:49:42,851 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:49:42,851 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:49:42,851 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:49:42,852 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_145a5285-19e7-4566-8d28-d3cb8822b0d9/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145a5285-19e7-4566-8d28-d3cb8822b0d9/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb010ae024b402436affeb854f96a5f9e0df3d8ec2cfe8b3a7f33676b7169a2c [2023-11-26 11:49:43,191 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:49:43,226 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:49:43,228 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:49:43,230 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:49:43,230 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:49:43,232 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145a5285-19e7-4566-8d28-d3cb8822b0d9/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/goblint-regression/28-race_reach_21-deref_read_racing.i [2023-11-26 11:49:46,462 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:49:46,712 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:49:46,713 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145a5285-19e7-4566-8d28-d3cb8822b0d9/sv-benchmarks/c/goblint-regression/28-race_reach_21-deref_read_racing.i [2023-11-26 11:49:46,735 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145a5285-19e7-4566-8d28-d3cb8822b0d9/bin/uautomizer-verify-VRDe98Ueme/data/b4cf649ff/58f5e6ebecd74ac99d8726a7e59b0589/FLAG0bb6be7bf [2023-11-26 11:49:46,759 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145a5285-19e7-4566-8d28-d3cb8822b0d9/bin/uautomizer-verify-VRDe98Ueme/data/b4cf649ff/58f5e6ebecd74ac99d8726a7e59b0589 [2023-11-26 11:49:46,763 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:49:46,765 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:49:46,766 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:49:46,766 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:49:46,775 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:49:46,776 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:49:46" (1/1) ... [2023-11-26 11:49:46,777 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17a0a6f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:46, skipping insertion in model container [2023-11-26 11:49:46,777 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:49:46" (1/1) ... [2023-11-26 11:49:46,833 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:49:47,249 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:49:47,270 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:49:47,357 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:49:47,406 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:49:47,406 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:47 WrapperNode [2023-11-26 11:49:47,407 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:49:47,408 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:49:47,408 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:49:47,408 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:49:47,415 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:47" (1/1) ... [2023-11-26 11:49:47,431 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:47" (1/1) ... [2023-11-26 11:49:47,462 INFO L138 Inliner]: procedures = 171, calls = 40, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 84 [2023-11-26 11:49:47,462 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:49:47,463 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:49:47,463 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:49:47,463 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:49:47,473 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:47" (1/1) ... [2023-11-26 11:49:47,473 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:47" (1/1) ... [2023-11-26 11:49:47,477 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:47" (1/1) ... [2023-11-26 11:49:47,478 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:47" (1/1) ... [2023-11-26 11:49:47,490 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:47" (1/1) ... [2023-11-26 11:49:47,496 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:47" (1/1) ... [2023-11-26 11:49:47,500 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:47" (1/1) ... [2023-11-26 11:49:47,502 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:47" (1/1) ... [2023-11-26 11:49:47,505 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:49:47,506 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:49:47,506 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:49:47,506 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:49:47,507 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:47" (1/1) ... [2023-11-26 11:49:47,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:49:47,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145a5285-19e7-4566-8d28-d3cb8822b0d9/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:49:47,540 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145a5285-19e7-4566-8d28-d3cb8822b0d9/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:49:47,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145a5285-19e7-4566-8d28-d3cb8822b0d9/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:49:47,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-26 11:49:47,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-26 11:49:47,575 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-26 11:49:47,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:49:47,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:49:47,576 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-26 11:49:47,576 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-26 11:49:47,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:49:47,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-26 11:49:47,576 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-26 11:49:47,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:49:47,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:49:47,578 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 11:49:47,729 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:49:47,732 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:49:48,212 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:49:48,289 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:49:48,293 INFO L309 CfgBuilder]: Removed 9 assume(true) statements. [2023-11-26 11:49:48,295 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:49:48 BoogieIcfgContainer [2023-11-26 11:49:48,295 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:49:48,299 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:49:48,299 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:49:48,304 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:49:48,304 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:49:46" (1/3) ... [2023-11-26 11:49:48,305 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d583243 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:49:48, skipping insertion in model container [2023-11-26 11:49:48,306 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:47" (2/3) ... [2023-11-26 11:49:48,306 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d583243 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:49:48, skipping insertion in model container [2023-11-26 11:49:48,307 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:49:48" (3/3) ... [2023-11-26 11:49:48,308 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_21-deref_read_racing.i [2023-11-26 11:49:48,318 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 11:49:48,332 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:49:48,333 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-11-26 11:49:48,333 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 11:49:48,404 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 11:49:48,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 159 transitions, 322 flow [2023-11-26 11:49:48,550 INFO L124 PetriNetUnfolderBase]: 16/213 cut-off events. [2023-11-26 11:49:48,550 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:49:48,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 213 events. 16/213 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 619 event pairs, 0 based on Foata normal form. 0/181 useless extension candidates. Maximal degree in co-relation 128. Up to 4 conditions per place. [2023-11-26 11:49:48,564 INFO L82 GeneralOperation]: Start removeDead. Operand has 151 places, 159 transitions, 322 flow [2023-11-26 11:49:48,573 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 151 places, 159 transitions, 322 flow [2023-11-26 11:49:48,586 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:49:48,607 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;@610f4d24, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:49:48,608 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-26 11:49:48,634 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:49:48,634 INFO L124 PetriNetUnfolderBase]: 1/37 cut-off events. [2023-11-26 11:49:48,634 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:49:48,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:49:48,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:49:48,636 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-11-26 11:49:48,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:48,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1716974939, now seen corresponding path program 1 times [2023-11-26 11:49:48,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:48,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809864168] [2023-11-26 11:49:48,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:48,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:48,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:49,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:49:49,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:49,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809864168] [2023-11-26 11:49:49,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809864168] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:49,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:49,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:49:49,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598945027] [2023-11-26 11:49:49,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:49,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:49:49,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:49,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:49:49,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:49:49,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 159 [2023-11-26 11:49:49,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 159 transitions, 322 flow. Second operand has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 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) [2023-11-26 11:49:49,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:49:49,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 159 [2023-11-26 11:49:49,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:49:49,430 INFO L124 PetriNetUnfolderBase]: 36/486 cut-off events. [2023-11-26 11:49:49,431 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-26 11:49:49,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 578 conditions, 486 events. 36/486 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2070 event pairs, 20 based on Foata normal form. 49/481 useless extension candidates. Maximal degree in co-relation 533. Up to 80 conditions per place. [2023-11-26 11:49:49,439 INFO L140 encePairwiseOnDemand]: 145/159 looper letters, 19 selfloop transitions, 2 changer transitions 0/151 dead transitions. [2023-11-26 11:49:49,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 151 transitions, 348 flow [2023-11-26 11:49:49,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:49:49,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:49:49,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 436 transitions. [2023-11-26 11:49:49,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9140461215932913 [2023-11-26 11:49:49,465 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 436 transitions. [2023-11-26 11:49:49,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 436 transitions. [2023-11-26 11:49:49,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:49:49,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 436 transitions. [2023-11-26 11:49:49,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 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) [2023-11-26 11:49:49,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 states have internal predecessors, (636), 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) [2023-11-26 11:49:49,490 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 states have internal predecessors, (636), 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) [2023-11-26 11:49:49,493 INFO L175 Difference]: Start difference. First operand has 151 places, 159 transitions, 322 flow. Second operand 3 states and 436 transitions. [2023-11-26 11:49:49,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 151 transitions, 348 flow [2023-11-26 11:49:49,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 151 transitions, 348 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 11:49:49,508 INFO L231 Difference]: Finished difference. Result has 151 places, 145 transitions, 302 flow [2023-11-26 11:49:49,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=302, PETRI_PLACES=151, PETRI_TRANSITIONS=145} [2023-11-26 11:49:49,515 INFO L281 CegarLoopForPetriNet]: 151 programPoint places, 0 predicate places. [2023-11-26 11:49:49,516 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 145 transitions, 302 flow [2023-11-26 11:49:49,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 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) [2023-11-26 11:49:49,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:49:49,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:49:49,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:49:49,518 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-11-26 11:49:49,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:49,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1234272767, now seen corresponding path program 1 times [2023-11-26 11:49:49,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:49,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948354178] [2023-11-26 11:49:49,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:49,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:49,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:49,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:49:49,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:49,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948354178] [2023-11-26 11:49:49,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948354178] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:49,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:49,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:49:49,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120485561] [2023-11-26 11:49:49,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:49,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:49:49,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:49,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:49:49,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:49:49,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 159 [2023-11-26 11:49:49,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 145 transitions, 302 flow. Second operand has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 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) [2023-11-26 11:49:49,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:49:49,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 159 [2023-11-26 11:49:49,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:49:49,919 INFO L124 PetriNetUnfolderBase]: 40/571 cut-off events. [2023-11-26 11:49:49,919 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-26 11:49:49,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 677 conditions, 571 events. 40/571 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2739 event pairs, 28 based on Foata normal form. 0/520 useless extension candidates. Maximal degree in co-relation 633. Up to 92 conditions per place. [2023-11-26 11:49:49,924 INFO L140 encePairwiseOnDemand]: 154/159 looper letters, 17 selfloop transitions, 2 changer transitions 0/146 dead transitions. [2023-11-26 11:49:49,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 146 transitions, 342 flow [2023-11-26 11:49:49,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:49:49,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:49:49,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 409 transitions. [2023-11-26 11:49:49,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8574423480083857 [2023-11-26 11:49:49,927 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 409 transitions. [2023-11-26 11:49:49,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 409 transitions. [2023-11-26 11:49:49,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:49:49,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 409 transitions. [2023-11-26 11:49:49,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 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) [2023-11-26 11:49:49,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 states have internal predecessors, (636), 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) [2023-11-26 11:49:49,934 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 states have internal predecessors, (636), 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) [2023-11-26 11:49:49,934 INFO L175 Difference]: Start difference. First operand has 151 places, 145 transitions, 302 flow. Second operand 3 states and 409 transitions. [2023-11-26 11:49:49,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 146 transitions, 342 flow [2023-11-26 11:49:49,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 146 transitions, 338 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:49:49,940 INFO L231 Difference]: Finished difference. Result has 149 places, 144 transitions, 306 flow [2023-11-26 11:49:49,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=306, PETRI_PLACES=149, PETRI_TRANSITIONS=144} [2023-11-26 11:49:49,941 INFO L281 CegarLoopForPetriNet]: 151 programPoint places, -2 predicate places. [2023-11-26 11:49:49,941 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 144 transitions, 306 flow [2023-11-26 11:49:49,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 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) [2023-11-26 11:49:49,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:49:49,943 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:49:49,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:49:49,943 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-11-26 11:49:49,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:49,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1884394175, now seen corresponding path program 1 times [2023-11-26 11:49:49,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:49,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129096034] [2023-11-26 11:49:49,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:49,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:49,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:49:49,977 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:49:49,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:49:50,033 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:49:50,034 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 11:49:50,036 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-11-26 11:49:50,039 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2023-11-26 11:49:50,040 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2023-11-26 11:49:50,041 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2023-11-26 11:49:50,042 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2023-11-26 11:49:50,042 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2023-11-26 11:49:50,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2023-11-26 11:49:50,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2023-11-26 11:49:50,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2023-11-26 11:49:50,044 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2023-11-26 11:49:50,044 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2023-11-26 11:49:50,044 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2023-11-26 11:49:50,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2023-11-26 11:49:50,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2023-11-26 11:49:50,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2023-11-26 11:49:50,053 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2023-11-26 11:49:50,053 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2023-11-26 11:49:50,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:49:50,054 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-26 11:49:50,057 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-26 11:49:50,057 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-26 11:49:50,126 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 11:49:50,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 217 places, 229 transitions, 468 flow [2023-11-26 11:49:50,202 INFO L124 PetriNetUnfolderBase]: 27/342 cut-off events. [2023-11-26 11:49:50,202 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-26 11:49:50,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 350 conditions, 342 events. 27/342 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1342 event pairs, 0 based on Foata normal form. 0/288 useless extension candidates. Maximal degree in co-relation 214. Up to 6 conditions per place. [2023-11-26 11:49:50,205 INFO L82 GeneralOperation]: Start removeDead. Operand has 217 places, 229 transitions, 468 flow [2023-11-26 11:49:50,211 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 217 places, 229 transitions, 468 flow [2023-11-26 11:49:50,213 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:49:50,214 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;@610f4d24, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:49:50,214 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2023-11-26 11:49:50,220 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:49:50,220 INFO L124 PetriNetUnfolderBase]: 1/37 cut-off events. [2023-11-26 11:49:50,220 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:49:50,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:49:50,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:49:50,221 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-11-26 11:49:50,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:50,221 INFO L85 PathProgramCache]: Analyzing trace with hash 97993098, now seen corresponding path program 1 times [2023-11-26 11:49:50,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:50,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081596670] [2023-11-26 11:49:50,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:50,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:50,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:50,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:49:50,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:50,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081596670] [2023-11-26 11:49:50,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081596670] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:50,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:50,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:49:50,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560415397] [2023-11-26 11:49:50,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:50,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:49:50,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:50,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:49:50,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:49:50,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 229 [2023-11-26 11:49:50,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 229 transitions, 468 flow. Second operand has 3 states, 3 states have (on average 190.33333333333334) internal successors, (571), 3 states have internal predecessors, (571), 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) [2023-11-26 11:49:50,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:49:50,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 229 [2023-11-26 11:49:50,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:49:51,527 INFO L124 PetriNetUnfolderBase]: 582/4445 cut-off events. [2023-11-26 11:49:51,529 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2023-11-26 11:49:51,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5448 conditions, 4445 events. 582/4445 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 42151 event pairs, 468 based on Foata normal form. 560/4551 useless extension candidates. Maximal degree in co-relation 727. Up to 969 conditions per place. [2023-11-26 11:49:51,570 INFO L140 encePairwiseOnDemand]: 209/229 looper letters, 27 selfloop transitions, 2 changer transitions 0/216 dead transitions. [2023-11-26 11:49:51,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 216 transitions, 500 flow [2023-11-26 11:49:51,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:49:51,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:49:51,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 621 transitions. [2023-11-26 11:49:51,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9039301310043668 [2023-11-26 11:49:51,574 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 621 transitions. [2023-11-26 11:49:51,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 621 transitions. [2023-11-26 11:49:51,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:49:51,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 621 transitions. [2023-11-26 11:49:51,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 207.0) internal successors, (621), 3 states have internal predecessors, (621), 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) [2023-11-26 11:49:51,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 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) [2023-11-26 11:49:51,581 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 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) [2023-11-26 11:49:51,582 INFO L175 Difference]: Start difference. First operand has 217 places, 229 transitions, 468 flow. Second operand 3 states and 621 transitions. [2023-11-26 11:49:51,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 216 transitions, 500 flow [2023-11-26 11:49:51,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 216 transitions, 500 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 11:49:51,589 INFO L231 Difference]: Finished difference. Result has 217 places, 210 transitions, 440 flow [2023-11-26 11:49:51,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=440, PETRI_PLACES=217, PETRI_TRANSITIONS=210} [2023-11-26 11:49:51,593 INFO L281 CegarLoopForPetriNet]: 217 programPoint places, 0 predicate places. [2023-11-26 11:49:51,593 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 210 transitions, 440 flow [2023-11-26 11:49:51,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.33333333333334) internal successors, (571), 3 states have internal predecessors, (571), 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) [2023-11-26 11:49:51,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:49:51,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:49:51,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 11:49:51,595 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-11-26 11:49:51,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:51,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1956318618, now seen corresponding path program 1 times [2023-11-26 11:49:51,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:51,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138022885] [2023-11-26 11:49:51,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:51,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:51,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:51,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:49:51,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:51,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138022885] [2023-11-26 11:49:51,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138022885] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:51,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:51,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:49:51,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957414354] [2023-11-26 11:49:51,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:51,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:49:51,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:51,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:49:51,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:49:51,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 229 [2023-11-26 11:49:51,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 210 transitions, 440 flow. Second operand has 3 states, 3 states have (on average 181.66666666666666) internal successors, (545), 3 states have internal predecessors, (545), 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) [2023-11-26 11:49:51,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:49:51,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 229 [2023-11-26 11:49:51,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:49:52,994 INFO L124 PetriNetUnfolderBase]: 1030/6373 cut-off events. [2023-11-26 11:49:52,994 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-11-26 11:49:53,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8110 conditions, 6373 events. 1030/6373 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 65198 event pairs, 726 based on Foata normal form. 0/5852 useless extension candidates. Maximal degree in co-relation 8060. Up to 1672 conditions per place. [2023-11-26 11:49:53,054 INFO L140 encePairwiseOnDemand]: 221/229 looper letters, 31 selfloop transitions, 3 changer transitions 0/213 dead transitions. [2023-11-26 11:49:53,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 213 transitions, 519 flow [2023-11-26 11:49:53,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:49:53,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:49:53,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 579 transitions. [2023-11-26 11:49:53,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8427947598253275 [2023-11-26 11:49:53,058 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 579 transitions. [2023-11-26 11:49:53,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 579 transitions. [2023-11-26 11:49:53,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:49:53,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 579 transitions. [2023-11-26 11:49:53,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 193.0) internal successors, (579), 3 states have internal predecessors, (579), 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) [2023-11-26 11:49:53,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 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) [2023-11-26 11:49:53,066 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 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) [2023-11-26 11:49:53,066 INFO L175 Difference]: Start difference. First operand has 217 places, 210 transitions, 440 flow. Second operand 3 states and 579 transitions. [2023-11-26 11:49:53,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 213 transitions, 519 flow [2023-11-26 11:49:53,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 213 transitions, 517 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:49:53,074 INFO L231 Difference]: Finished difference. Result has 214 places, 208 transitions, 449 flow [2023-11-26 11:49:53,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=449, PETRI_PLACES=214, PETRI_TRANSITIONS=208} [2023-11-26 11:49:53,075 INFO L281 CegarLoopForPetriNet]: 217 programPoint places, -3 predicate places. [2023-11-26 11:49:53,076 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 208 transitions, 449 flow [2023-11-26 11:49:53,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.66666666666666) internal successors, (545), 3 states have internal predecessors, (545), 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) [2023-11-26 11:49:53,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:49:53,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:49:53,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 11:49:53,078 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-11-26 11:49:53,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:53,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1702606162, now seen corresponding path program 1 times [2023-11-26 11:49:53,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:53,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848665366] [2023-11-26 11:49:53,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:53,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:53,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:53,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:49:53,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:53,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848665366] [2023-11-26 11:49:53,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848665366] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:49:53,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83617229] [2023-11-26 11:49:53,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:53,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:53,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145a5285-19e7-4566-8d28-d3cb8822b0d9/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:49:53,219 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145a5285-19e7-4566-8d28-d3cb8822b0d9/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:49:53,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145a5285-19e7-4566-8d28-d3cb8822b0d9/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:49:53,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:53,340 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:49:53,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:49:53,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 11:49:53,370 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:49:53,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83617229] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:53,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:49:53,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-11-26 11:49:53,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095911691] [2023-11-26 11:49:53,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:53,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:49:53,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:53,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:49:53,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:49:53,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 229 [2023-11-26 11:49:53,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 208 transitions, 449 flow. Second operand has 3 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 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) [2023-11-26 11:49:53,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:49:53,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 229 [2023-11-26 11:49:53,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:49:54,487 INFO L124 PetriNetUnfolderBase]: 944/5315 cut-off events. [2023-11-26 11:49:54,488 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-11-26 11:49:54,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6955 conditions, 5315 events. 944/5315 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 51381 event pairs, 627 based on Foata normal form. 0/4840 useless extension candidates. Maximal degree in co-relation 6248. Up to 1212 conditions per place. [2023-11-26 11:49:54,546 INFO L140 encePairwiseOnDemand]: 226/229 looper letters, 33 selfloop transitions, 2 changer transitions 0/219 dead transitions. [2023-11-26 11:49:54,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 219 transitions, 541 flow [2023-11-26 11:49:54,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:49:54,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:49:54,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 597 transitions. [2023-11-26 11:49:54,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.868995633187773 [2023-11-26 11:49:54,552 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 597 transitions. [2023-11-26 11:49:54,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 597 transitions. [2023-11-26 11:49:54,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:49:54,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 597 transitions. [2023-11-26 11:49:54,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 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) [2023-11-26 11:49:54,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 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) [2023-11-26 11:49:54,559 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 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) [2023-11-26 11:49:54,559 INFO L175 Difference]: Start difference. First operand has 214 places, 208 transitions, 449 flow. Second operand 3 states and 597 transitions. [2023-11-26 11:49:54,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 219 transitions, 541 flow [2023-11-26 11:49:54,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 219 transitions, 541 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 11:49:54,566 INFO L231 Difference]: Finished difference. Result has 215 places, 207 transitions, 451 flow [2023-11-26 11:49:54,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=451, PETRI_PLACES=215, PETRI_TRANSITIONS=207} [2023-11-26 11:49:54,567 INFO L281 CegarLoopForPetriNet]: 217 programPoint places, -2 predicate places. [2023-11-26 11:49:54,568 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 207 transitions, 451 flow [2023-11-26 11:49:54,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 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) [2023-11-26 11:49:54,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:49:54,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:49:54,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145a5285-19e7-4566-8d28-d3cb8822b0d9/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 11:49:54,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145a5285-19e7-4566-8d28-d3cb8822b0d9/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-26 11:49:54,775 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-11-26 11:49:54,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:54,776 INFO L85 PathProgramCache]: Analyzing trace with hash -712311667, now seen corresponding path program 1 times [2023-11-26 11:49:54,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:54,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397441563] [2023-11-26 11:49:54,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:54,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:54,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:55,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:49:55,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:55,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397441563] [2023-11-26 11:49:55,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397441563] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:55,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:55,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:49:55,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365573432] [2023-11-26 11:49:55,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:55,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:49:55,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:55,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:49:55,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:49:55,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 229 [2023-11-26 11:49:55,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 207 transitions, 451 flow. Second operand has 6 states, 6 states have (on average 151.5) internal successors, (909), 6 states have internal predecessors, (909), 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) [2023-11-26 11:49:55,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:49:55,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 229 [2023-11-26 11:49:55,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:50:00,211 INFO L124 PetriNetUnfolderBase]: 8446/20931 cut-off events. [2023-11-26 11:50:00,211 INFO L125 PetriNetUnfolderBase]: For 83/83 co-relation queries the response was YES. [2023-11-26 11:50:00,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35522 conditions, 20931 events. 8446/20931 cut-off events. For 83/83 co-relation queries the response was YES. Maximal size of possible extension queue 880. Compared 230366 event pairs, 2739 based on Foata normal form. 0/20060 useless extension candidates. Maximal degree in co-relation 34882. Up to 6272 conditions per place. [2023-11-26 11:50:00,381 INFO L140 encePairwiseOnDemand]: 185/229 looper letters, 209 selfloop transitions, 84 changer transitions 0/439 dead transitions. [2023-11-26 11:50:00,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 439 transitions, 1521 flow [2023-11-26 11:50:00,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:50:00,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 11:50:00,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1197 transitions. [2023-11-26 11:50:00,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.87117903930131 [2023-11-26 11:50:00,386 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1197 transitions. [2023-11-26 11:50:00,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1197 transitions. [2023-11-26 11:50:00,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:50:00,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1197 transitions. [2023-11-26 11:50:00,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 199.5) internal successors, (1197), 6 states have internal predecessors, (1197), 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) [2023-11-26 11:50:00,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 229.0) internal successors, (1603), 7 states have internal predecessors, (1603), 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) [2023-11-26 11:50:00,397 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 229.0) internal successors, (1603), 7 states have internal predecessors, (1603), 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) [2023-11-26 11:50:00,397 INFO L175 Difference]: Start difference. First operand has 215 places, 207 transitions, 451 flow. Second operand 6 states and 1197 transitions. [2023-11-26 11:50:00,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 439 transitions, 1521 flow [2023-11-26 11:50:00,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 439 transitions, 1517 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:50:00,408 INFO L231 Difference]: Finished difference. Result has 223 places, 299 transitions, 1079 flow [2023-11-26 11:50:00,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1079, PETRI_PLACES=223, PETRI_TRANSITIONS=299} [2023-11-26 11:50:00,409 INFO L281 CegarLoopForPetriNet]: 217 programPoint places, 6 predicate places. [2023-11-26 11:50:00,410 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 299 transitions, 1079 flow [2023-11-26 11:50:00,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 151.5) internal successors, (909), 6 states have internal predecessors, (909), 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) [2023-11-26 11:50:00,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:50:00,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:00,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 11:50:00,411 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-11-26 11:50:00,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:00,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1525422023, now seen corresponding path program 1 times [2023-11-26 11:50:00,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:00,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248516033] [2023-11-26 11:50:00,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:00,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:00,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:00,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:00,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:00,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248516033] [2023-11-26 11:50:00,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248516033] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:50:00,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907408700] [2023-11-26 11:50:00,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:00,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:00,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145a5285-19e7-4566-8d28-d3cb8822b0d9/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:50:00,490 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145a5285-19e7-4566-8d28-d3cb8822b0d9/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:50:00,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145a5285-19e7-4566-8d28-d3cb8822b0d9/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:50:00,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:00,587 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:50:00,589 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:00,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 11:50:00,601 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:50:00,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907408700] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:00,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:50:00,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-11-26 11:50:00,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735246275] [2023-11-26 11:50:00,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:00,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:50:00,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:00,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:50:00,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:50:00,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 229 [2023-11-26 11:50:00,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 299 transitions, 1079 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 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) [2023-11-26 11:50:00,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:50:00,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 229 [2023-11-26 11:50:00,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:50:04,272 INFO L124 PetriNetUnfolderBase]: 4098/21584 cut-off events. [2023-11-26 11:50:04,272 INFO L125 PetriNetUnfolderBase]: For 2122/2466 co-relation queries the response was YES. [2023-11-26 11:50:04,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35471 conditions, 21584 events. 4098/21584 cut-off events. For 2122/2466 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 275505 event pairs, 1551 based on Foata normal form. 30/20364 useless extension candidates. Maximal degree in co-relation 34849. Up to 2333 conditions per place. [2023-11-26 11:50:04,463 INFO L140 encePairwiseOnDemand]: 227/229 looper letters, 30 selfloop transitions, 1 changer transitions 0/310 dead transitions. [2023-11-26 11:50:04,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 310 transitions, 1163 flow [2023-11-26 11:50:04,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:50:04,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:50:04,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 605 transitions. [2023-11-26 11:50:04,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8806404657933042 [2023-11-26 11:50:04,468 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 605 transitions. [2023-11-26 11:50:04,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 605 transitions. [2023-11-26 11:50:04,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:50:04,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 605 transitions. [2023-11-26 11:50:04,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 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) [2023-11-26 11:50:04,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 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) [2023-11-26 11:50:04,474 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 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) [2023-11-26 11:50:04,475 INFO L175 Difference]: Start difference. First operand has 223 places, 299 transitions, 1079 flow. Second operand 3 states and 605 transitions. [2023-11-26 11:50:04,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 310 transitions, 1163 flow [2023-11-26 11:50:04,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 310 transitions, 1163 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 11:50:04,499 INFO L231 Difference]: Finished difference. Result has 224 places, 298 transitions, 1079 flow [2023-11-26 11:50:04,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=1077, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1079, PETRI_PLACES=224, PETRI_TRANSITIONS=298} [2023-11-26 11:50:04,503 INFO L281 CegarLoopForPetriNet]: 217 programPoint places, 7 predicate places. [2023-11-26 11:50:04,503 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 298 transitions, 1079 flow [2023-11-26 11:50:04,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 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) [2023-11-26 11:50:04,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:50:04,504 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:04,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145a5285-19e7-4566-8d28-d3cb8822b0d9/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:50:04,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145a5285-19e7-4566-8d28-d3cb8822b0d9/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:04,710 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-11-26 11:50:04,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:04,711 INFO L85 PathProgramCache]: Analyzing trace with hash -397978152, now seen corresponding path program 1 times [2023-11-26 11:50:04,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:04,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739108001] [2023-11-26 11:50:04,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:04,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:04,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:50:04,740 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:50:04,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:50:04,771 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:50:04,771 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 11:50:04,772 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2023-11-26 11:50:04,772 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (21 of 23 remaining) [2023-11-26 11:50:04,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (20 of 23 remaining) [2023-11-26 11:50:04,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (19 of 23 remaining) [2023-11-26 11:50:04,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (18 of 23 remaining) [2023-11-26 11:50:04,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (17 of 23 remaining) [2023-11-26 11:50:04,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (16 of 23 remaining) [2023-11-26 11:50:04,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (15 of 23 remaining) [2023-11-26 11:50:04,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 23 remaining) [2023-11-26 11:50:04,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (13 of 23 remaining) [2023-11-26 11:50:04,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (12 of 23 remaining) [2023-11-26 11:50:04,775 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 23 remaining) [2023-11-26 11:50:04,775 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 23 remaining) [2023-11-26 11:50:04,775 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 23 remaining) [2023-11-26 11:50:04,775 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (8 of 23 remaining) [2023-11-26 11:50:04,776 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 23 remaining) [2023-11-26 11:50:04,776 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (6 of 23 remaining) [2023-11-26 11:50:04,776 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 23 remaining) [2023-11-26 11:50:04,776 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 23 remaining) [2023-11-26 11:50:04,776 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 23 remaining) [2023-11-26 11:50:04,777 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 23 remaining) [2023-11-26 11:50:04,777 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 23 remaining) [2023-11-26 11:50:04,777 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 23 remaining) [2023-11-26 11:50:04,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 11:50:04,778 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-11-26 11:50:04,779 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-26 11:50:04,779 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-26 11:50:04,838 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 11:50:04,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 283 places, 299 transitions, 616 flow [2023-11-26 11:50:04,955 INFO L124 PetriNetUnfolderBase]: 38/471 cut-off events. [2023-11-26 11:50:04,955 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-26 11:50:04,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 484 conditions, 471 events. 38/471 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2079 event pairs, 0 based on Foata normal form. 0/395 useless extension candidates. Maximal degree in co-relation 346. Up to 8 conditions per place. [2023-11-26 11:50:04,961 INFO L82 GeneralOperation]: Start removeDead. Operand has 283 places, 299 transitions, 616 flow [2023-11-26 11:50:04,968 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 283 places, 299 transitions, 616 flow [2023-11-26 11:50:04,970 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:50:04,970 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;@610f4d24, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:50:04,970 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2023-11-26 11:50:04,974 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:50:04,974 INFO L124 PetriNetUnfolderBase]: 1/37 cut-off events. [2023-11-26 11:50:04,974 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:50:04,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:50:04,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:04,975 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-11-26 11:50:04,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:04,975 INFO L85 PathProgramCache]: Analyzing trace with hash 10808501, now seen corresponding path program 1 times [2023-11-26 11:50:04,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:04,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410458855] [2023-11-26 11:50:04,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:04,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:04,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:05,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:05,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:05,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410458855] [2023-11-26 11:50:05,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410458855] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:05,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:05,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:50:05,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991959683] [2023-11-26 11:50:05,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:05,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:50:05,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:05,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:50:05,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:50:05,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 299 [2023-11-26 11:50:05,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 299 transitions, 616 flow. Second operand has 3 states, 3 states have (on average 247.33333333333334) internal successors, (742), 3 states have internal predecessors, (742), 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) [2023-11-26 11:50:05,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:50:05,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 299 [2023-11-26 11:50:05,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:50:12,014 INFO L124 PetriNetUnfolderBase]: 6462/34989 cut-off events. [2023-11-26 11:50:12,015 INFO L125 PetriNetUnfolderBase]: For 337/337 co-relation queries the response was YES. [2023-11-26 11:50:12,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44470 conditions, 34989 events. 6462/34989 cut-off events. For 337/337 co-relation queries the response was YES. Maximal size of possible extension queue 629. Compared 477772 event pairs, 4074 based on Foata normal form. 5545/37251 useless extension candidates. Maximal degree in co-relation 5657. Up to 9250 conditions per place. [2023-11-26 11:50:12,387 INFO L140 encePairwiseOnDemand]: 273/299 looper letters, 34 selfloop transitions, 2 changer transitions 0/280 dead transitions. [2023-11-26 11:50:12,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 280 transitions, 650 flow [2023-11-26 11:50:12,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:50:12,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:50:12,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 805 transitions. [2023-11-26 11:50:12,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8974358974358975 [2023-11-26 11:50:12,393 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 805 transitions. [2023-11-26 11:50:12,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 805 transitions. [2023-11-26 11:50:12,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:50:12,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 805 transitions. [2023-11-26 11:50:12,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 268.3333333333333) internal successors, (805), 3 states have internal predecessors, (805), 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) [2023-11-26 11:50:12,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 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) [2023-11-26 11:50:12,402 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 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) [2023-11-26 11:50:12,402 INFO L175 Difference]: Start difference. First operand has 283 places, 299 transitions, 616 flow. Second operand 3 states and 805 transitions. [2023-11-26 11:50:12,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 280 transitions, 650 flow [2023-11-26 11:50:12,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 280 transitions, 648 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-26 11:50:12,414 INFO L231 Difference]: Finished difference. Result has 283 places, 274 transitions, 574 flow [2023-11-26 11:50:12,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=574, PETRI_PLACES=283, PETRI_TRANSITIONS=274} [2023-11-26 11:50:12,417 INFO L281 CegarLoopForPetriNet]: 283 programPoint places, 0 predicate places. [2023-11-26 11:50:12,417 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 274 transitions, 574 flow [2023-11-26 11:50:12,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 247.33333333333334) internal successors, (742), 3 states have internal predecessors, (742), 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) [2023-11-26 11:50:12,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:50:12,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:12,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-26 11:50:12,418 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-11-26 11:50:12,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:12,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1131619211, now seen corresponding path program 1 times [2023-11-26 11:50:12,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:12,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884484984] [2023-11-26 11:50:12,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:12,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:12,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:12,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:12,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:12,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884484984] [2023-11-26 11:50:12,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884484984] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:12,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:12,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:50:12,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290125415] [2023-11-26 11:50:12,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:12,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:50:12,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:12,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:50:12,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:50:12,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 299 [2023-11-26 11:50:12,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 274 transitions, 574 flow. Second operand has 3 states, 3 states have (on average 232.66666666666666) internal successors, (698), 3 states have internal predecessors, (698), 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) [2023-11-26 11:50:12,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:50:12,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 299 [2023-11-26 11:50:12,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:50:24,621 INFO L124 PetriNetUnfolderBase]: 17970/74226 cut-off events. [2023-11-26 11:50:24,621 INFO L125 PetriNetUnfolderBase]: For 401/401 co-relation queries the response was YES. [2023-11-26 11:50:24,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99924 conditions, 74226 events. 17970/74226 cut-off events. For 401/401 co-relation queries the response was YES. Maximal size of possible extension queue 1438. Compared 1080679 event pairs, 13022 based on Foata normal form. 0/68903 useless extension candidates. Maximal degree in co-relation 99873. Up to 25204 conditions per place. [2023-11-26 11:50:25,313 INFO L140 encePairwiseOnDemand]: 288/299 looper letters, 45 selfloop transitions, 4 changer transitions 0/279 dead transitions. [2023-11-26 11:50:25,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 279 transitions, 692 flow [2023-11-26 11:50:25,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:50:25,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:50:25,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 749 transitions. [2023-11-26 11:50:25,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.835005574136009 [2023-11-26 11:50:25,318 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 749 transitions. [2023-11-26 11:50:25,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 749 transitions. [2023-11-26 11:50:25,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:50:25,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 749 transitions. [2023-11-26 11:50:25,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 249.66666666666666) internal successors, (749), 3 states have internal predecessors, (749), 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) [2023-11-26 11:50:25,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 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) [2023-11-26 11:50:25,325 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 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) [2023-11-26 11:50:25,325 INFO L175 Difference]: Start difference. First operand has 283 places, 274 transitions, 574 flow. Second operand 3 states and 749 transitions. [2023-11-26 11:50:25,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 279 transitions, 692 flow [2023-11-26 11:50:25,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 279 transitions, 690 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:50:25,332 INFO L231 Difference]: Finished difference. Result has 278 places, 271 transitions, 586 flow [2023-11-26 11:50:25,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=586, PETRI_PLACES=278, PETRI_TRANSITIONS=271} [2023-11-26 11:50:25,334 INFO L281 CegarLoopForPetriNet]: 283 programPoint places, -5 predicate places. [2023-11-26 11:50:25,334 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 271 transitions, 586 flow [2023-11-26 11:50:25,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 232.66666666666666) internal successors, (698), 3 states have internal predecessors, (698), 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) [2023-11-26 11:50:25,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:50:25,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:25,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-26 11:50:25,335 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-11-26 11:50:25,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:25,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1822858936, now seen corresponding path program 1 times [2023-11-26 11:50:25,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:25,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735644073] [2023-11-26 11:50:25,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:25,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:25,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:25,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:25,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:25,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735644073] [2023-11-26 11:50:25,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735644073] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:50:25,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255119857] [2023-11-26 11:50:25,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:25,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:25,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145a5285-19e7-4566-8d28-d3cb8822b0d9/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:50:25,435 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145a5285-19e7-4566-8d28-d3cb8822b0d9/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:50:25,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145a5285-19e7-4566-8d28-d3cb8822b0d9/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 11:50:25,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:25,541 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:50:25,543 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:25,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 11:50:25,561 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:50:25,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255119857] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:25,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:50:25,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-11-26 11:50:25,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600656591] [2023-11-26 11:50:25,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:25,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:50:25,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:25,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:50:25,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:50:25,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 299 [2023-11-26 11:50:25,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 271 transitions, 586 flow. Second operand has 3 states, 3 states have (on average 245.66666666666666) internal successors, (737), 3 states have internal predecessors, (737), 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) [2023-11-26 11:50:25,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:50:25,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 299 [2023-11-26 11:50:25,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:50:33,868 INFO L124 PetriNetUnfolderBase]: 11294/45604 cut-off events. [2023-11-26 11:50:33,868 INFO L125 PetriNetUnfolderBase]: For 184/184 co-relation queries the response was YES. [2023-11-26 11:50:34,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62394 conditions, 45604 events. 11294/45604 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 1000. Compared 615754 event pairs, 8370 based on Foata normal form. 0/41948 useless extension candidates. Maximal degree in co-relation 61775. Up to 12520 conditions per place. [2023-11-26 11:50:34,626 INFO L140 encePairwiseOnDemand]: 296/299 looper letters, 46 selfloop transitions, 2 changer transitions 0/288 dead transitions. [2023-11-26 11:50:34,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 288 transitions, 716 flow [2023-11-26 11:50:34,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:50:34,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:50:34,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 781 transitions. [2023-11-26 11:50:34,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8706800445930881 [2023-11-26 11:50:34,630 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 781 transitions. [2023-11-26 11:50:34,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 781 transitions. [2023-11-26 11:50:34,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:50:34,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 781 transitions. [2023-11-26 11:50:34,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 260.3333333333333) internal successors, (781), 3 states have internal predecessors, (781), 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) [2023-11-26 11:50:34,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 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) [2023-11-26 11:50:34,638 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 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) [2023-11-26 11:50:34,638 INFO L175 Difference]: Start difference. First operand has 278 places, 271 transitions, 586 flow. Second operand 3 states and 781 transitions. [2023-11-26 11:50:34,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 288 transitions, 716 flow [2023-11-26 11:50:34,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 288 transitions, 716 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 11:50:34,646 INFO L231 Difference]: Finished difference. Result has 279 places, 270 transitions, 588 flow [2023-11-26 11:50:34,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=584, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=588, PETRI_PLACES=279, PETRI_TRANSITIONS=270} [2023-11-26 11:50:34,647 INFO L281 CegarLoopForPetriNet]: 283 programPoint places, -4 predicate places. [2023-11-26 11:50:34,648 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 270 transitions, 588 flow [2023-11-26 11:50:34,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 245.66666666666666) internal successors, (737), 3 states have internal predecessors, (737), 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) [2023-11-26 11:50:34,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:50:34,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:34,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145a5285-19e7-4566-8d28-d3cb8822b0d9/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 11:50:34,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145a5285-19e7-4566-8d28-d3cb8822b0d9/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-26 11:50:34,855 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-11-26 11:50:34,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:34,856 INFO L85 PathProgramCache]: Analyzing trace with hash -2075645486, now seen corresponding path program 1 times [2023-11-26 11:50:34,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:34,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55546002] [2023-11-26 11:50:34,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:34,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:34,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:35,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:35,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:35,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55546002] [2023-11-26 11:50:35,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55546002] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:35,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:35,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:50:35,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586924390] [2023-11-26 11:50:35,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:35,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:50:35,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:35,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:50:35,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:50:35,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 299 [2023-11-26 11:50:35,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 270 transitions, 588 flow. Second operand has 6 states, 6 states have (on average 186.5) internal successors, (1119), 6 states have internal predecessors, (1119), 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) [2023-11-26 11:50:35,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:50:35,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 299 [2023-11-26 11:50:35,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand