./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 9bd2c7ff 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_ba0bda1d-cc34-4a7a-a520-55c1f0a0fd7f/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0bda1d-cc34-4a7a-a520-55c1f0a0fd7f/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0bda1d-cc34-4a7a-a520-55c1f0a0fd7f/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0bda1d-cc34-4a7a-a520-55c1f0a0fd7f/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0bda1d-cc34-4a7a-a520-55c1f0a0fd7f/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0bda1d-cc34-4a7a-a520-55c1f0a0fd7f/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c8af2e9e80aefb6a93651d6c869df13510f679bd9566c8571973545c9393aab5 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:35:21,193 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:35:21,260 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0bda1d-cc34-4a7a-a520-55c1f0a0fd7f/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-19 07:35:21,266 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:35:21,267 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:35:21,292 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:35:21,293 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:35:21,294 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:35:21,295 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:35:21,295 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:35:21,297 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:35:21,297 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:35:21,298 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:35:21,299 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:35:21,300 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:35:21,300 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:35:21,301 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:35:21,302 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:35:21,302 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:35:21,303 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:35:21,304 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:35:21,310 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:35:21,311 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-19 07:35:21,311 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:35:21,312 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:35:21,312 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:35:21,313 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:35:21,315 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:35:21,316 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:35:21,316 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:35:21,318 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:35:21,319 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:35:21,320 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:35:21,320 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:35:21,320 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:35:21,321 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:35:21,321 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:35:21,321 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:35:21,322 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:35:21,322 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:35:21,322 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:35:21,323 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_ba0bda1d-cc34-4a7a-a520-55c1f0a0fd7f/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0bda1d-cc34-4a7a-a520-55c1f0a0fd7f/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8af2e9e80aefb6a93651d6c869df13510f679bd9566c8571973545c9393aab5 [2023-11-19 07:35:21,624 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:35:21,648 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:35:21,651 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:35:21,652 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:35:21,653 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:35:21,654 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0bda1d-cc34-4a7a-a520-55c1f0a0fd7f/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i [2023-11-19 07:35:24,815 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:35:25,119 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:35:25,122 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0bda1d-cc34-4a7a-a520-55c1f0a0fd7f/sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i [2023-11-19 07:35:25,142 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0bda1d-cc34-4a7a-a520-55c1f0a0fd7f/bin/uautomizer-verify-uCwYo4JHxu/data/e6fa52c48/43d4bbae3a654bd5a878002b4a962e21/FLAG09684becc [2023-11-19 07:35:25,157 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0bda1d-cc34-4a7a-a520-55c1f0a0fd7f/bin/uautomizer-verify-uCwYo4JHxu/data/e6fa52c48/43d4bbae3a654bd5a878002b4a962e21 [2023-11-19 07:35:25,160 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:35:25,162 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:35:25,163 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:35:25,163 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:35:25,169 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:35:25,170 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:35:25" (1/1) ... [2023-11-19 07:35:25,171 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1982311a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:25, skipping insertion in model container [2023-11-19 07:35:25,172 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:35:25" (1/1) ... [2023-11-19 07:35:25,265 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:35:25,892 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:35:25,921 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:35:26,028 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:35:26,096 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:35:26,096 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:26 WrapperNode [2023-11-19 07:35:26,096 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:35:26,098 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:35:26,098 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:35:26,098 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:35:26,106 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:26" (1/1) ... [2023-11-19 07:35:26,129 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:26" (1/1) ... [2023-11-19 07:35:26,180 INFO L138 Inliner]: procedures = 271, calls = 42, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 353 [2023-11-19 07:35:26,181 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:35:26,182 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:35:26,182 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:35:26,182 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:35:26,192 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:26" (1/1) ... [2023-11-19 07:35:26,193 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:26" (1/1) ... [2023-11-19 07:35:26,201 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:26" (1/1) ... [2023-11-19 07:35:26,202 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:26" (1/1) ... [2023-11-19 07:35:26,228 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:26" (1/1) ... [2023-11-19 07:35:26,236 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:26" (1/1) ... [2023-11-19 07:35:26,240 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:26" (1/1) ... [2023-11-19 07:35:26,243 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:26" (1/1) ... [2023-11-19 07:35:26,271 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:35:26,272 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:35:26,273 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:35:26,273 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:35:26,275 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:26" (1/1) ... [2023-11-19 07:35:26,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:35:26,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0bda1d-cc34-4a7a-a520-55c1f0a0fd7f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:35:26,312 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0bda1d-cc34-4a7a-a520-55c1f0a0fd7f/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:35:26,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0bda1d-cc34-4a7a-a520-55c1f0a0fd7f/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:35:26,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:35:26,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:35:26,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:35:26,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:35:26,381 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 07:35:26,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:35:26,382 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-19 07:35:26,382 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-19 07:35:26,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:35:26,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:35:26,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:35:26,384 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:35:26,570 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:35:26,573 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:35:27,246 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:35:27,263 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:35:27,264 INFO L302 CfgBuilder]: Removed 35 assume(true) statements. [2023-11-19 07:35:27,270 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:35:27 BoogieIcfgContainer [2023-11-19 07:35:27,270 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:35:27,272 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:35:27,273 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:35:27,276 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:35:27,276 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:35:25" (1/3) ... [2023-11-19 07:35:27,277 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bceee2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:35:27, skipping insertion in model container [2023-11-19 07:35:27,277 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:26" (2/3) ... [2023-11-19 07:35:27,278 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bceee2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:35:27, skipping insertion in model container [2023-11-19 07:35:27,278 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:35:27" (3/3) ... [2023-11-19 07:35:27,279 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_73-funloop_hard_racefree.i [2023-11-19 07:35:27,289 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:35:27,300 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:35:27,301 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-11-19 07:35:27,301 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:35:27,448 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-19 07:35:27,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 332 places, 377 transitions, 761 flow [2023-11-19 07:35:27,761 INFO L124 PetriNetUnfolderBase]: 78/602 cut-off events. [2023-11-19 07:35:27,761 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:35:27,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 607 conditions, 602 events. 78/602 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 3369 event pairs, 0 based on Foata normal form. 0/494 useless extension candidates. Maximal degree in co-relation 340. Up to 8 conditions per place. [2023-11-19 07:35:27,776 INFO L82 GeneralOperation]: Start removeDead. Operand has 332 places, 377 transitions, 761 flow [2023-11-19 07:35:27,791 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 332 places, 377 transitions, 761 flow [2023-11-19 07:35:27,796 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:35:27,808 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 332 places, 377 transitions, 761 flow [2023-11-19 07:35:27,811 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 332 places, 377 transitions, 761 flow [2023-11-19 07:35:27,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 332 places, 377 transitions, 761 flow [2023-11-19 07:35:27,923 INFO L124 PetriNetUnfolderBase]: 78/602 cut-off events. [2023-11-19 07:35:27,923 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:35:27,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 607 conditions, 602 events. 78/602 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 3369 event pairs, 0 based on Foata normal form. 0/494 useless extension candidates. Maximal degree in co-relation 340. Up to 8 conditions per place. [2023-11-19 07:35:27,967 INFO L119 LiptonReduction]: Number of co-enabled transitions 50820 [2023-11-19 07:35:32,468 INFO L134 LiptonReduction]: Checked pairs total: 189412 [2023-11-19 07:35:32,468 INFO L136 LiptonReduction]: Total number of compositions: 237 [2023-11-19 07:35:32,492 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:35:32,501 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;@13eb76cc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:35:32,501 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-11-19 07:35:32,507 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:35:32,507 INFO L124 PetriNetUnfolderBase]: 10/38 cut-off events. [2023-11-19 07:35:32,508 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:35:32,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:32,509 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-19 07:35:32,509 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-19 07:35:32,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:32,515 INFO L85 PathProgramCache]: Analyzing trace with hash 982467427, now seen corresponding path program 1 times [2023-11-19 07:35:32,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:32,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251843980] [2023-11-19 07:35:32,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:32,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:32,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:32,880 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:35:32,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:32,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251843980] [2023-11-19 07:35:32,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251843980] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:32,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:32,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:35:32,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119777751] [2023-11-19 07:35:32,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:32,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:35:32,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:32,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:35:32,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:35:32,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 614 [2023-11-19 07:35:32,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 194 transitions, 395 flow. Second operand has 3 states, 3 states have (on average 326.6666666666667) internal successors, (980), 3 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:32,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:32,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 614 [2023-11-19 07:35:32,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:33,571 INFO L124 PetriNetUnfolderBase]: 822/2954 cut-off events. [2023-11-19 07:35:33,571 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:35:33,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4487 conditions, 2954 events. 822/2954 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 23989 event pairs, 684 based on Foata normal form. 357/3023 useless extension candidates. Maximal degree in co-relation 4323. Up to 1527 conditions per place. [2023-11-19 07:35:33,591 INFO L140 encePairwiseOnDemand]: 578/614 looper letters, 63 selfloop transitions, 2 changer transitions 0/162 dead transitions. [2023-11-19 07:35:33,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 162 transitions, 461 flow [2023-11-19 07:35:33,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:35:33,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:35:33,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1074 transitions. [2023-11-19 07:35:33,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5830618892508144 [2023-11-19 07:35:33,617 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1074 transitions. [2023-11-19 07:35:33,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1074 transitions. [2023-11-19 07:35:33,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:35:33,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1074 transitions. [2023-11-19 07:35:33,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 358.0) internal successors, (1074), 3 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:33,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 614.0) internal successors, (2456), 4 states have internal predecessors, (2456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:33,645 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 614.0) internal successors, (2456), 4 states have internal predecessors, (2456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:33,647 INFO L175 Difference]: Start difference. First operand has 157 places, 194 transitions, 395 flow. Second operand 3 states and 1074 transitions. [2023-11-19 07:35:33,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 162 transitions, 461 flow [2023-11-19 07:35:33,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 162 transitions, 461 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:35:33,659 INFO L231 Difference]: Finished difference. Result has 160 places, 162 transitions, 341 flow [2023-11-19 07:35:33,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=614, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=341, PETRI_PLACES=160, PETRI_TRANSITIONS=162} [2023-11-19 07:35:33,666 INFO L281 CegarLoopForPetriNet]: 157 programPoint places, 3 predicate places. [2023-11-19 07:35:33,667 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 162 transitions, 341 flow [2023-11-19 07:35:33,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 326.6666666666667) internal successors, (980), 3 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:33,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:33,668 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:33,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:35:33,669 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-19 07:35:33,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:33,670 INFO L85 PathProgramCache]: Analyzing trace with hash -817306192, now seen corresponding path program 1 times [2023-11-19 07:35:33,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:33,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929144803] [2023-11-19 07:35:33,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:33,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:33,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:33,789 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:35:33,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:33,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929144803] [2023-11-19 07:35:33,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929144803] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:35:33,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193328097] [2023-11-19 07:35:33,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:33,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:35:33,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0bda1d-cc34-4a7a-a520-55c1f0a0fd7f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:35:33,793 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0bda1d-cc34-4a7a-a520-55c1f0a0fd7f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:35:33,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0bda1d-cc34-4a7a-a520-55c1f0a0fd7f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:35:33,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:33,926 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:35:33,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:35:33,967 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:35:33,967 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:35:33,985 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:35:33,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193328097] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:35:33,985 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:35:33,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-19 07:35:33,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866823347] [2023-11-19 07:35:33,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:35:33,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:35:33,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:33,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:35:33,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:35:34,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 614 [2023-11-19 07:35:34,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 162 transitions, 341 flow. Second operand has 7 states, 7 states have (on average 325.57142857142856) internal successors, (2279), 7 states have internal predecessors, (2279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:34,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:34,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 614 [2023-11-19 07:35:34,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:34,613 INFO L124 PetriNetUnfolderBase]: 822/2957 cut-off events. [2023-11-19 07:35:34,613 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:35:34,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4503 conditions, 2957 events. 822/2957 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 23990 event pairs, 684 based on Foata normal form. 0/2669 useless extension candidates. Maximal degree in co-relation 4491. Up to 1527 conditions per place. [2023-11-19 07:35:34,632 INFO L140 encePairwiseOnDemand]: 611/614 looper letters, 63 selfloop transitions, 5 changer transitions 0/165 dead transitions. [2023-11-19 07:35:34,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 165 transitions, 489 flow [2023-11-19 07:35:34,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:35:34,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:35:34,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2015 transitions. [2023-11-19 07:35:34,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5469598262757872 [2023-11-19 07:35:34,641 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2015 transitions. [2023-11-19 07:35:34,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2015 transitions. [2023-11-19 07:35:34,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:35:34,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2015 transitions. [2023-11-19 07:35:34,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 335.8333333333333) internal successors, (2015), 6 states have internal predecessors, (2015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:34,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 614.0) internal successors, (4298), 7 states have internal predecessors, (4298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:34,663 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 614.0) internal successors, (4298), 7 states have internal predecessors, (4298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:34,663 INFO L175 Difference]: Start difference. First operand has 160 places, 162 transitions, 341 flow. Second operand 6 states and 2015 transitions. [2023-11-19 07:35:34,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 165 transitions, 489 flow [2023-11-19 07:35:34,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 165 transitions, 485 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-19 07:35:34,670 INFO L231 Difference]: Finished difference. Result has 167 places, 165 transitions, 373 flow [2023-11-19 07:35:34,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=614, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=373, PETRI_PLACES=167, PETRI_TRANSITIONS=165} [2023-11-19 07:35:34,671 INFO L281 CegarLoopForPetriNet]: 157 programPoint places, 10 predicate places. [2023-11-19 07:35:34,672 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 165 transitions, 373 flow [2023-11-19 07:35:34,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 325.57142857142856) internal successors, (2279), 7 states have internal predecessors, (2279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:34,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:34,674 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-11-19 07:35:34,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0bda1d-cc34-4a7a-a520-55c1f0a0fd7f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:35:34,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0bda1d-cc34-4a7a-a520-55c1f0a0fd7f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:35:34,895 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-19 07:35:34,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:34,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1829498531, now seen corresponding path program 2 times [2023-11-19 07:35:34,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:34,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948531871] [2023-11-19 07:35:34,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:34,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:34,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:35,094 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:35:35,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:35,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948531871] [2023-11-19 07:35:35,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948531871] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:35:35,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260674997] [2023-11-19 07:35:35,095 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:35:35,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:35:35,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0bda1d-cc34-4a7a-a520-55c1f0a0fd7f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:35:35,097 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0bda1d-cc34-4a7a-a520-55c1f0a0fd7f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:35:35,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0bda1d-cc34-4a7a-a520-55c1f0a0fd7f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:35:35,207 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:35:35,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:35:35,208 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:35:35,210 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:35:35,229 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:35:35,229 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:35:35,288 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:35:35,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260674997] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:35:35,289 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:35:35,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-19 07:35:35,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270731954] [2023-11-19 07:35:35,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:35:35,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 07:35:35,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:35,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 07:35:35,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:35:35,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 614 [2023-11-19 07:35:35,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 165 transitions, 373 flow. Second operand has 13 states, 13 states have (on average 325.3076923076923) internal successors, (4229), 13 states have internal predecessors, (4229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:35,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:35,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 614 [2023-11-19 07:35:35,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:35,909 INFO L124 PetriNetUnfolderBase]: 822/2963 cut-off events. [2023-11-19 07:35:35,910 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-11-19 07:35:35,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4540 conditions, 2963 events. 822/2963 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 24059 event pairs, 684 based on Foata normal form. 6/2682 useless extension candidates. Maximal degree in co-relation 4482. Up to 1527 conditions per place. [2023-11-19 07:35:35,930 INFO L140 encePairwiseOnDemand]: 611/614 looper letters, 63 selfloop transitions, 11 changer transitions 0/171 dead transitions. [2023-11-19 07:35:35,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 171 transitions, 557 flow [2023-11-19 07:35:35,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:35:35,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-19 07:35:35,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3968 transitions. [2023-11-19 07:35:35,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5385450597176982 [2023-11-19 07:35:35,944 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3968 transitions. [2023-11-19 07:35:35,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3968 transitions. [2023-11-19 07:35:35,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:35:35,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3968 transitions. [2023-11-19 07:35:35,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 330.6666666666667) internal successors, (3968), 12 states have internal predecessors, (3968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:35,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 614.0) internal successors, (7982), 13 states have internal predecessors, (7982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:35,987 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 614.0) internal successors, (7982), 13 states have internal predecessors, (7982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:35,987 INFO L175 Difference]: Start difference. First operand has 167 places, 165 transitions, 373 flow. Second operand 12 states and 3968 transitions. [2023-11-19 07:35:35,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 171 transitions, 557 flow [2023-11-19 07:35:35,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 171 transitions, 543 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-19 07:35:35,996 INFO L231 Difference]: Finished difference. Result has 183 places, 171 transitions, 443 flow [2023-11-19 07:35:35,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=614, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=443, PETRI_PLACES=183, PETRI_TRANSITIONS=171} [2023-11-19 07:35:35,998 INFO L281 CegarLoopForPetriNet]: 157 programPoint places, 26 predicate places. [2023-11-19 07:35:35,999 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 171 transitions, 443 flow [2023-11-19 07:35:36,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 325.3076923076923) internal successors, (4229), 13 states have internal predecessors, (4229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:36,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:36,004 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-11-19 07:35:36,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0bda1d-cc34-4a7a-a520-55c1f0a0fd7f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:35:36,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0bda1d-cc34-4a7a-a520-55c1f0a0fd7f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:35:36,218 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-19 07:35:36,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:36,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1067342973, now seen corresponding path program 3 times [2023-11-19 07:35:36,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:36,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687379279] [2023-11-19 07:35:36,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:36,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:36,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:35:36,275 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:35:36,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:35:36,334 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:35:36,335 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:35:36,336 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2023-11-19 07:35:36,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2023-11-19 07:35:36,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2023-11-19 07:35:36,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2023-11-19 07:35:36,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2023-11-19 07:35:36,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2023-11-19 07:35:36,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2023-11-19 07:35:36,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2023-11-19 07:35:36,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2023-11-19 07:35:36,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2023-11-19 07:35:36,341 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2023-11-19 07:35:36,341 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2023-11-19 07:35:36,341 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2023-11-19 07:35:36,341 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2023-11-19 07:35:36,342 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2023-11-19 07:35:36,342 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2023-11-19 07:35:36,342 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2023-11-19 07:35:36,343 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2023-11-19 07:35:36,343 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2023-11-19 07:35:36,343 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2023-11-19 07:35:36,343 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2023-11-19 07:35:36,344 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2023-11-19 07:35:36,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:35:36,345 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2023-11-19 07:35:36,348 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:35:36,348 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 07:35:36,434 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 07:35:36,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 430 places, 489 transitions, 994 flow [2023-11-19 07:35:36,702 INFO L124 PetriNetUnfolderBase]: 126/971 cut-off events. [2023-11-19 07:35:36,702 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 07:35:36,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 983 conditions, 971 events. 126/971 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 6218 event pairs, 0 based on Foata normal form. 0/797 useless extension candidates. Maximal degree in co-relation 604. Up to 12 conditions per place. [2023-11-19 07:35:36,715 INFO L82 GeneralOperation]: Start removeDead. Operand has 430 places, 489 transitions, 994 flow [2023-11-19 07:35:36,733 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 430 places, 489 transitions, 994 flow [2023-11-19 07:35:36,733 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:35:36,734 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 430 places, 489 transitions, 994 flow [2023-11-19 07:35:36,734 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 430 places, 489 transitions, 994 flow [2023-11-19 07:35:36,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 430 places, 489 transitions, 994 flow [2023-11-19 07:35:36,927 INFO L124 PetriNetUnfolderBase]: 126/971 cut-off events. [2023-11-19 07:35:36,928 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 07:35:36,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 983 conditions, 971 events. 126/971 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 6218 event pairs, 0 based on Foata normal form. 0/797 useless extension candidates. Maximal degree in co-relation 604. Up to 12 conditions per place. [2023-11-19 07:35:37,001 INFO L119 LiptonReduction]: Number of co-enabled transitions 128260 [2023-11-19 07:35:42,226 INFO L134 LiptonReduction]: Checked pairs total: 488298 [2023-11-19 07:35:42,226 INFO L136 LiptonReduction]: Total number of compositions: 310 [2023-11-19 07:35:42,230 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:35:42,237 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;@13eb76cc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:35:42,237 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2023-11-19 07:35:42,248 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:35:42,249 INFO L124 PetriNetUnfolderBase]: 26/116 cut-off events. [2023-11-19 07:35:42,249 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:35:42,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:42,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:42,250 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-19 07:35:42,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:42,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1331769326, now seen corresponding path program 1 times [2023-11-19 07:35:42,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:42,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096572451] [2023-11-19 07:35:42,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:42,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:42,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:42,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:42,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:42,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096572451] [2023-11-19 07:35:42,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096572451] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:42,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:42,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:35:42,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016010392] [2023-11-19 07:35:42,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:42,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:35:42,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:42,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:35:42,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:35:42,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 421 out of 799 [2023-11-19 07:35:42,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 257 transitions, 530 flow. Second operand has 3 states, 3 states have (on average 423.0) internal successors, (1269), 3 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:42,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:42,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 421 of 799 [2023-11-19 07:35:42,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:54,027 INFO L124 PetriNetUnfolderBase]: 31138/70964 cut-off events. [2023-11-19 07:35:54,027 INFO L125 PetriNetUnfolderBase]: For 185/185 co-relation queries the response was YES. [2023-11-19 07:35:54,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115060 conditions, 70964 events. 31138/70964 cut-off events. For 185/185 co-relation queries the response was YES. Maximal size of possible extension queue 1683. Compared 818310 event pairs, 27108 based on Foata normal form. 9334/72932 useless extension candidates. Maximal degree in co-relation 51463. Up to 43993 conditions per place. [2023-11-19 07:35:54,664 INFO L140 encePairwiseOnDemand]: 753/799 looper letters, 84 selfloop transitions, 2 changer transitions 0/215 dead transitions. [2023-11-19 07:35:54,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 215 transitions, 618 flow [2023-11-19 07:35:54,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:35:54,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:35:54,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1393 transitions. [2023-11-19 07:35:54,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5811430955360868 [2023-11-19 07:35:54,673 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1393 transitions. [2023-11-19 07:35:54,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1393 transitions. [2023-11-19 07:35:54,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:35:54,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1393 transitions. [2023-11-19 07:35:54,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 464.3333333333333) internal successors, (1393), 3 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:54,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 799.0) internal successors, (3196), 4 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:54,693 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 799.0) internal successors, (3196), 4 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:54,693 INFO L175 Difference]: Start difference. First operand has 209 places, 257 transitions, 530 flow. Second operand 3 states and 1393 transitions. [2023-11-19 07:35:54,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 215 transitions, 618 flow [2023-11-19 07:35:54,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 215 transitions, 618 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:35:54,706 INFO L231 Difference]: Finished difference. Result has 212 places, 215 transitions, 456 flow [2023-11-19 07:35:54,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=799, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=456, PETRI_PLACES=212, PETRI_TRANSITIONS=215} [2023-11-19 07:35:54,710 INFO L281 CegarLoopForPetriNet]: 209 programPoint places, 3 predicate places. [2023-11-19 07:35:54,711 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 215 transitions, 456 flow [2023-11-19 07:35:54,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 423.0) internal successors, (1269), 3 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:54,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:54,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:54,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:35:54,716 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-19 07:35:54,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:54,717 INFO L85 PathProgramCache]: Analyzing trace with hash 944147115, now seen corresponding path program 1 times [2023-11-19 07:35:54,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:54,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000248231] [2023-11-19 07:35:54,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:54,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:54,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:54,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:54,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:54,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000248231] [2023-11-19 07:35:54,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000248231] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:35:54,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120461620] [2023-11-19 07:35:54,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:54,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:35:54,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0bda1d-cc34-4a7a-a520-55c1f0a0fd7f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:35:54,807 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0bda1d-cc34-4a7a-a520-55c1f0a0fd7f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:35:54,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0bda1d-cc34-4a7a-a520-55c1f0a0fd7f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:35:54,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:54,943 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:35:54,944 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:35:54,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:35:54,959 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:35:54,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120461620] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:54,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:35:54,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-11-19 07:35:54,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840650038] [2023-11-19 07:35:54,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:54,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:35:54,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:54,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:35:54,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:35:54,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 421 out of 799 [2023-11-19 07:35:54,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 215 transitions, 456 flow. Second operand has 3 states, 3 states have (on average 423.3333333333333) internal successors, (1270), 3 states have internal predecessors, (1270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:54,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:54,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 421 of 799 [2023-11-19 07:35:54,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:05,548 INFO L124 PetriNetUnfolderBase]: 30503/70084 cut-off events. [2023-11-19 07:36:05,549 INFO L125 PetriNetUnfolderBase]: For 158/158 co-relation queries the response was YES. [2023-11-19 07:36:05,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114152 conditions, 70084 events. 30503/70084 cut-off events. For 158/158 co-relation queries the response was YES. Maximal size of possible extension queue 1685. Compared 815886 event pairs, 13068 based on Foata normal form. 0/62936 useless extension candidates. Maximal degree in co-relation 114139. Up to 43937 conditions per place. [2023-11-19 07:36:06,034 INFO L140 encePairwiseOnDemand]: 796/799 looper letters, 105 selfloop transitions, 2 changer transitions 0/236 dead transitions. [2023-11-19 07:36:06,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 236 transitions, 712 flow [2023-11-19 07:36:06,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:36:06,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:36:06,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1370 transitions. [2023-11-19 07:36:06,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5715477680433876 [2023-11-19 07:36:06,043 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1370 transitions. [2023-11-19 07:36:06,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1370 transitions. [2023-11-19 07:36:06,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:06,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1370 transitions. [2023-11-19 07:36:06,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 456.6666666666667) internal successors, (1370), 3 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:06,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 799.0) internal successors, (3196), 4 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:06,061 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 799.0) internal successors, (3196), 4 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:06,061 INFO L175 Difference]: Start difference. First operand has 212 places, 215 transitions, 456 flow. Second operand 3 states and 1370 transitions. [2023-11-19 07:36:06,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 236 transitions, 712 flow [2023-11-19 07:36:06,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 236 transitions, 708 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-19 07:36:06,070 INFO L231 Difference]: Finished difference. Result has 214 places, 216 transitions, 464 flow [2023-11-19 07:36:06,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=799, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=464, PETRI_PLACES=214, PETRI_TRANSITIONS=216} [2023-11-19 07:36:06,074 INFO L281 CegarLoopForPetriNet]: 209 programPoint places, 5 predicate places. [2023-11-19 07:36:06,074 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 216 transitions, 464 flow [2023-11-19 07:36:06,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 423.3333333333333) internal successors, (1270), 3 states have internal predecessors, (1270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:06,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:06,077 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:06,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0bda1d-cc34-4a7a-a520-55c1f0a0fd7f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:36:06,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0bda1d-cc34-4a7a-a520-55c1f0a0fd7f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-19 07:36:06,290 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-19 07:36:06,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:06,290 INFO L85 PathProgramCache]: Analyzing trace with hash -380539492, now seen corresponding path program 1 times [2023-11-19 07:36:06,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:06,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015686104] [2023-11-19 07:36:06,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:06,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:06,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:06,360 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 07:36:06,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:06,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015686104] [2023-11-19 07:36:06,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015686104] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:36:06,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063147893] [2023-11-19 07:36:06,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:06,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:06,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0bda1d-cc34-4a7a-a520-55c1f0a0fd7f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:06,363 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0bda1d-cc34-4a7a-a520-55c1f0a0fd7f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:36:06,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba0bda1d-cc34-4a7a-a520-55c1f0a0fd7f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:36:06,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:06,469 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:36:06,474 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:36:06,486 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 07:36:06,487 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:36:06,506 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 07:36:06,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063147893] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:36:06,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:36:06,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-19 07:36:06,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341900722] [2023-11-19 07:36:06,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:36:06,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:36:06,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:06,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:36:06,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:36:06,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 420 out of 799 [2023-11-19 07:36:06,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 216 transitions, 464 flow. Second operand has 7 states, 7 states have (on average 421.7142857142857) internal successors, (2952), 7 states have internal predecessors, (2952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:06,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:06,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 420 of 799 [2023-11-19 07:36:06,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand