./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya --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 2a10f98c1a89e2ac521234c9e4f0eca565cc5bc1484e9c7d67d861e216c6f9ba --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:24:49,095 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:24:49,175 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-29 01:24:49,181 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:24:49,182 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:24:49,208 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:24:49,209 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:24:49,209 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:24:49,210 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:24:49,211 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:24:49,212 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:24:49,213 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:24:49,213 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:24:49,214 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:24:49,215 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:24:49,215 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:24:49,216 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:24:49,217 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:24:49,217 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:24:49,218 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:24:49,218 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:24:49,219 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:24:49,220 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-29 01:24:49,220 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 01:24:49,221 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:24:49,221 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:24:49,222 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:24:49,222 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:24:49,223 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:24:49,223 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:24:49,224 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:24:49,224 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:24:49,225 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:24:49,225 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:24:49,225 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:24:49,226 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:24:49,226 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:24:49,226 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:24:49,226 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:24:49,227 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:24:49,227 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:24:49,227 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_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a10f98c1a89e2ac521234c9e4f0eca565cc5bc1484e9c7d67d861e216c6f9ba [2023-11-29 01:24:49,488 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:24:49,519 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:24:49,521 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:24:49,522 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:24:49,523 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:24:49,524 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i [2023-11-29 01:24:52,358 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:24:52,658 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:24:52,659 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i [2023-11-29 01:24:52,681 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/data/b0e0e9ff0/a8c0d5b24d814093b26dc3c7ad818285/FLAG50286534e [2023-11-29 01:24:52,698 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/data/b0e0e9ff0/a8c0d5b24d814093b26dc3c7ad818285 [2023-11-29 01:24:52,702 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:24:52,704 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:24:52,706 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:24:52,706 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:24:52,711 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:24:52,712 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:24:52" (1/1) ... [2023-11-29 01:24:52,713 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@532a135e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:24:52, skipping insertion in model container [2023-11-29 01:24:52,713 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:24:52" (1/1) ... [2023-11-29 01:24:52,772 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:24:53,275 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:24:53,299 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:24:53,392 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:24:53,473 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:24:53,474 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:24:53 WrapperNode [2023-11-29 01:24:53,474 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:24:53,475 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:24:53,475 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:24:53,476 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:24:53,482 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:24:53" (1/1) ... [2023-11-29 01:24:53,505 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:24:53" (1/1) ... [2023-11-29 01:24:53,543 INFO L138 Inliner]: procedures = 272, calls = 36, calls flagged for inlining = 6, calls inlined = 8, statements flattened = 290 [2023-11-29 01:24:53,544 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:24:53,545 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:24:53,545 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:24:53,545 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:24:53,555 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:24:53" (1/1) ... [2023-11-29 01:24:53,555 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:24:53" (1/1) ... [2023-11-29 01:24:53,563 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:24:53" (1/1) ... [2023-11-29 01:24:53,564 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:24:53" (1/1) ... [2023-11-29 01:24:53,585 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:24:53" (1/1) ... [2023-11-29 01:24:53,592 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:24:53" (1/1) ... [2023-11-29 01:24:53,595 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:24:53" (1/1) ... [2023-11-29 01:24:53,599 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:24:53" (1/1) ... [2023-11-29 01:24:53,604 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:24:53,606 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:24:53,606 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:24:53,606 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:24:53,607 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:24:53" (1/1) ... [2023-11-29 01:24:53,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:24:53,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:24:53,641 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:24:53,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:24:53,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 01:24:53,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 01:24:53,685 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-29 01:24:53,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-29 01:24:53,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-29 01:24:53,686 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-29 01:24:53,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:24:53,686 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-29 01:24:53,686 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-29 01:24:53,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-29 01:24:53,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:24:53,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:24:53,688 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 01:24:53,849 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:24:53,852 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:24:54,259 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:24:54,299 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:24:54,299 INFO L309 CfgBuilder]: Removed 25 assume(true) statements. [2023-11-29 01:24:54,301 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:24:54 BoogieIcfgContainer [2023-11-29 01:24:54,301 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:24:54,304 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:24:54,304 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:24:54,307 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:24:54,307 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:24:52" (1/3) ... [2023-11-29 01:24:54,308 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b8771e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:24:54, skipping insertion in model container [2023-11-29 01:24:54,308 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:24:53" (2/3) ... [2023-11-29 01:24:54,309 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b8771e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:24:54, skipping insertion in model container [2023-11-29 01:24:54,309 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:24:54" (3/3) ... [2023-11-29 01:24:54,310 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_70-funloop_racefree.i [2023-11-29 01:24:54,318 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 01:24:54,328 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:24:54,328 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-11-29 01:24:54,328 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 01:24:54,415 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-29 01:24:54,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 259 places, 291 transitions, 589 flow [2023-11-29 01:24:54,612 INFO L124 PetriNetUnfolderBase]: 52/426 cut-off events. [2023-11-29 01:24:54,612 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 01:24:54,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 431 conditions, 426 events. 52/426 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1899 event pairs, 0 based on Foata normal form. 0/354 useless extension candidates. Maximal degree in co-relation 254. Up to 8 conditions per place. [2023-11-29 01:24:54,624 INFO L82 GeneralOperation]: Start removeDead. Operand has 259 places, 291 transitions, 589 flow [2023-11-29 01:24:54,634 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 259 places, 291 transitions, 589 flow [2023-11-29 01:24:54,645 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:24:54,653 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;@199edfa1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:24:54,653 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-29 01:24:54,667 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 01:24:54,667 INFO L124 PetriNetUnfolderBase]: 7/89 cut-off events. [2023-11-29 01:24:54,667 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 01:24:54,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:24:54,668 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] [2023-11-29 01:24:54,669 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-11-29 01:24:54,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:24:54,674 INFO L85 PathProgramCache]: Analyzing trace with hash 972554558, now seen corresponding path program 1 times [2023-11-29 01:24:54,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:24:54,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736012528] [2023-11-29 01:24:54,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:24:54,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:24:54,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:24:54,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:24:54,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:24:54,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736012528] [2023-11-29 01:24:54,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736012528] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:24:54,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:24:54,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:24:54,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428746727] [2023-11-29 01:24:54,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:24:54,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:24:54,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:24:54,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:24:54,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:24:55,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 291 [2023-11-29 01:24:55,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 291 transitions, 589 flow. Second operand has 3 states, 3 states have (on average 237.33333333333334) internal successors, (712), 3 states have internal predecessors, (712), 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) [2023-11-29 01:24:55,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:24:55,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 291 [2023-11-29 01:24:55,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:24:55,358 INFO L124 PetriNetUnfolderBase]: 98/1313 cut-off events. [2023-11-29 01:24:55,359 INFO L125 PetriNetUnfolderBase]: For 7/10 co-relation queries the response was YES. [2023-11-29 01:24:55,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1506 conditions, 1313 events. 98/1313 cut-off events. For 7/10 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 9118 event pairs, 72 based on Foata normal form. 227/1426 useless extension candidates. Maximal degree in co-relation 1326. Up to 187 conditions per place. [2023-11-29 01:24:55,372 INFO L140 encePairwiseOnDemand]: 259/291 looper letters, 23 selfloop transitions, 2 changer transitions 0/257 dead transitions. [2023-11-29 01:24:55,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 257 transitions, 571 flow [2023-11-29 01:24:55,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:24:55,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:24:55,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 764 transitions. [2023-11-29 01:24:55,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8751431844215349 [2023-11-29 01:24:55,391 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 764 transitions. [2023-11-29 01:24:55,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 764 transitions. [2023-11-29 01:24:55,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:24:55,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 764 transitions. [2023-11-29 01:24:55,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 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) [2023-11-29 01:24:55,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 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) [2023-11-29 01:24:55,410 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 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) [2023-11-29 01:24:55,412 INFO L175 Difference]: Start difference. First operand has 259 places, 291 transitions, 589 flow. Second operand 3 states and 764 transitions. [2023-11-29 01:24:55,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 257 transitions, 571 flow [2023-11-29 01:24:55,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 257 transitions, 571 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 01:24:55,425 INFO L231 Difference]: Finished difference. Result has 256 places, 257 transitions, 531 flow [2023-11-29 01:24:55,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=531, PETRI_PLACES=256, PETRI_TRANSITIONS=257} [2023-11-29 01:24:55,431 INFO L281 CegarLoopForPetriNet]: 259 programPoint places, -3 predicate places. [2023-11-29 01:24:55,432 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 257 transitions, 531 flow [2023-11-29 01:24:55,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 237.33333333333334) internal successors, (712), 3 states have internal predecessors, (712), 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) [2023-11-29 01:24:55,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:24:55,433 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] [2023-11-29 01:24:55,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 01:24:55,434 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-11-29 01:24:55,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:24:55,434 INFO L85 PathProgramCache]: Analyzing trace with hash -2115554242, now seen corresponding path program 1 times [2023-11-29 01:24:55,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:24:55,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440266414] [2023-11-29 01:24:55,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:24:55,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:24:55,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:24:55,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:24:55,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:24:55,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440266414] [2023-11-29 01:24:55,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440266414] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:24:55,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53383757] [2023-11-29 01:24:55,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:24:55,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:24:55,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:24:55,574 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:24:55,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 01:24:55,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:24:55,671 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 01:24:55,675 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:24:55,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:24:55,697 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:24:55,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53383757] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:24:55,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:24:55,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-29 01:24:55,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776420150] [2023-11-29 01:24:55,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:24:55,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:24:55,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:24:55,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:24:55,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:24:55,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 291 [2023-11-29 01:24:55,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 257 transitions, 531 flow. Second operand has 3 states, 3 states have (on average 237.33333333333334) internal successors, (712), 3 states have internal predecessors, (712), 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) [2023-11-29 01:24:55,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:24:55,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 291 [2023-11-29 01:24:55,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:24:55,936 INFO L124 PetriNetUnfolderBase]: 117/1336 cut-off events. [2023-11-29 01:24:55,936 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-29 01:24:55,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1566 conditions, 1336 events. 117/1336 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 9542 event pairs, 0 based on Foata normal form. 1/1223 useless extension candidates. Maximal degree in co-relation 1534. Up to 208 conditions per place. [2023-11-29 01:24:55,946 INFO L140 encePairwiseOnDemand]: 288/291 looper letters, 30 selfloop transitions, 2 changer transitions 0/265 dead transitions. [2023-11-29 01:24:55,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 265 transitions, 611 flow [2023-11-29 01:24:55,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:24:55,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:24:55,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 741 transitions. [2023-11-29 01:24:55,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8487972508591065 [2023-11-29 01:24:55,950 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 741 transitions. [2023-11-29 01:24:55,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 741 transitions. [2023-11-29 01:24:55,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:24:55,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 741 transitions. [2023-11-29 01:24:55,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 247.0) internal successors, (741), 3 states have internal predecessors, (741), 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) [2023-11-29 01:24:55,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 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) [2023-11-29 01:24:55,957 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 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) [2023-11-29 01:24:55,957 INFO L175 Difference]: Start difference. First operand has 256 places, 257 transitions, 531 flow. Second operand 3 states and 741 transitions. [2023-11-29 01:24:55,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 265 transitions, 611 flow [2023-11-29 01:24:55,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 265 transitions, 609 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 01:24:55,965 INFO L231 Difference]: Finished difference. Result has 258 places, 257 transitions, 537 flow [2023-11-29 01:24:55,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=537, PETRI_PLACES=258, PETRI_TRANSITIONS=257} [2023-11-29 01:24:55,967 INFO L281 CegarLoopForPetriNet]: 259 programPoint places, -1 predicate places. [2023-11-29 01:24:55,967 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 257 transitions, 537 flow [2023-11-29 01:24:55,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 237.33333333333334) internal successors, (712), 3 states have internal predecessors, (712), 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) [2023-11-29 01:24:55,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:24:55,969 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] [2023-11-29 01:24:55,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 01:24:56,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:24:56,172 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-11-29 01:24:56,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:24:56,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1926919945, now seen corresponding path program 1 times [2023-11-29 01:24:56,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:24:56,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478751908] [2023-11-29 01:24:56,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:24:56,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:24:56,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:24:56,264 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 01:24:56,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:24:56,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478751908] [2023-11-29 01:24:56,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478751908] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:24:56,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59192192] [2023-11-29 01:24:56,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:24:56,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:24:56,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:24:56,266 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:24:56,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 01:24:56,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:24:56,358 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 01:24:56,360 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:24:56,414 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 01:24:56,415 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:24:56,457 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 01:24:56,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59192192] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:24:56,458 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:24:56,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-29 01:24:56,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950757675] [2023-11-29 01:24:56,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:24:56,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:24:56,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:24:56,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:24:56,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:24:56,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 291 [2023-11-29 01:24:56,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 257 transitions, 537 flow. Second operand has 10 states, 10 states have (on average 234.9) internal successors, (2349), 10 states have internal predecessors, (2349), 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) [2023-11-29 01:24:56,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:24:56,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 291 [2023-11-29 01:24:56,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:24:56,935 INFO L124 PetriNetUnfolderBase]: 95/1223 cut-off events. [2023-11-29 01:24:56,935 INFO L125 PetriNetUnfolderBase]: For 5/8 co-relation queries the response was YES. [2023-11-29 01:24:56,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1431 conditions, 1223 events. 95/1223 cut-off events. For 5/8 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 8292 event pairs, 72 based on Foata normal form. 2/1121 useless extension candidates. Maximal degree in co-relation 1368. Up to 179 conditions per place. [2023-11-29 01:24:56,948 INFO L140 encePairwiseOnDemand]: 285/291 looper letters, 27 selfloop transitions, 9 changer transitions 0/265 dead transitions. [2023-11-29 01:24:56,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 265 transitions, 627 flow [2023-11-29 01:24:56,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:24:56,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 01:24:56,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2135 transitions. [2023-11-29 01:24:56,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.815196639938908 [2023-11-29 01:24:56,957 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2135 transitions. [2023-11-29 01:24:56,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2135 transitions. [2023-11-29 01:24:56,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:24:56,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2135 transitions. [2023-11-29 01:24:56,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 237.22222222222223) internal successors, (2135), 9 states have internal predecessors, (2135), 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) [2023-11-29 01:24:56,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 291.0) internal successors, (2910), 10 states have internal predecessors, (2910), 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) [2023-11-29 01:24:56,978 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 291.0) internal successors, (2910), 10 states have internal predecessors, (2910), 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) [2023-11-29 01:24:56,979 INFO L175 Difference]: Start difference. First operand has 258 places, 257 transitions, 537 flow. Second operand 9 states and 2135 transitions. [2023-11-29 01:24:56,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 265 transitions, 627 flow [2023-11-29 01:24:56,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 265 transitions, 623 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 01:24:56,987 INFO L231 Difference]: Finished difference. Result has 267 places, 263 transitions, 583 flow [2023-11-29 01:24:56,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=533, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=583, PETRI_PLACES=267, PETRI_TRANSITIONS=263} [2023-11-29 01:24:56,989 INFO L281 CegarLoopForPetriNet]: 259 programPoint places, 8 predicate places. [2023-11-29 01:24:56,989 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 263 transitions, 583 flow [2023-11-29 01:24:56,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 234.9) internal successors, (2349), 10 states have internal predecessors, (2349), 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) [2023-11-29 01:24:56,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:24:56,992 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 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] [2023-11-29 01:24:56,998 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 01:24:57,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:24:57,199 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-11-29 01:24:57,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:24:57,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1681037065, now seen corresponding path program 2 times [2023-11-29 01:24:57,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:24:57,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489767301] [2023-11-29 01:24:57,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:24:57,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:24:57,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:24:57,392 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 01:24:57,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:24:57,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489767301] [2023-11-29 01:24:57,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489767301] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:24:57,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801183731] [2023-11-29 01:24:57,394 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:24:57,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:24:57,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:24:57,395 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:24:57,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 01:24:57,506 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:24:57,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:24:57,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 01:24:57,511 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:24:57,572 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 01:24:57,572 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:24:57,697 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 01:24:57,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801183731] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:24:57,698 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:24:57,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-11-29 01:24:57,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413760571] [2023-11-29 01:24:57,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:24:57,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 01:24:57,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:24:57,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 01:24:57,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-11-29 01:24:57,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 291 [2023-11-29 01:24:57,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 263 transitions, 583 flow. Second operand has 18 states, 18 states have (on average 234.94444444444446) internal successors, (4229), 18 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) [2023-11-29 01:24:57,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:24:57,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 291 [2023-11-29 01:24:57,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:24:58,280 INFO L124 PetriNetUnfolderBase]: 95/1243 cut-off events. [2023-11-29 01:24:58,281 INFO L125 PetriNetUnfolderBase]: For 32/35 co-relation queries the response was YES. [2023-11-29 01:24:58,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1515 conditions, 1243 events. 95/1243 cut-off events. For 32/35 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 8305 event pairs, 72 based on Foata normal form. 4/1143 useless extension candidates. Maximal degree in co-relation 1371. Up to 179 conditions per place. [2023-11-29 01:24:58,292 INFO L140 encePairwiseOnDemand]: 285/291 looper letters, 31 selfloop transitions, 21 changer transitions 0/281 dead transitions. [2023-11-29 01:24:58,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 281 transitions, 783 flow [2023-11-29 01:24:58,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 01:24:58,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-29 01:24:58,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4949 transitions. [2023-11-29 01:24:58,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8098510882016037 [2023-11-29 01:24:58,310 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4949 transitions. [2023-11-29 01:24:58,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4949 transitions. [2023-11-29 01:24:58,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:24:58,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4949 transitions. [2023-11-29 01:24:58,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 235.66666666666666) internal successors, (4949), 21 states have internal predecessors, (4949), 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) [2023-11-29 01:24:58,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 291.0) internal successors, (6402), 22 states have internal predecessors, (6402), 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) [2023-11-29 01:24:58,361 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 291.0) internal successors, (6402), 22 states have internal predecessors, (6402), 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) [2023-11-29 01:24:58,362 INFO L175 Difference]: Start difference. First operand has 267 places, 263 transitions, 583 flow. Second operand 21 states and 4949 transitions. [2023-11-29 01:24:58,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 281 transitions, 783 flow [2023-11-29 01:24:58,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 281 transitions, 769 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-29 01:24:58,374 INFO L231 Difference]: Finished difference. Result has 291 places, 276 transitions, 707 flow [2023-11-29 01:24:58,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=577, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=707, PETRI_PLACES=291, PETRI_TRANSITIONS=276} [2023-11-29 01:24:58,378 INFO L281 CegarLoopForPetriNet]: 259 programPoint places, 32 predicate places. [2023-11-29 01:24:58,378 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 276 transitions, 707 flow [2023-11-29 01:24:58,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 234.94444444444446) internal successors, (4229), 18 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) [2023-11-29 01:24:58,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:24:58,381 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 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] [2023-11-29 01:24:58,387 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 01:24:58,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:24:58,582 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-11-29 01:24:58,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:24:58,583 INFO L85 PathProgramCache]: Analyzing trace with hash -300603145, now seen corresponding path program 3 times [2023-11-29 01:24:58,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:24:58,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286671113] [2023-11-29 01:24:58,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:24:58,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:24:58,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:24:58,948 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 01:24:58,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:24:58,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286671113] [2023-11-29 01:24:58,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286671113] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:24:58,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545063034] [2023-11-29 01:24:58,949 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 01:24:58,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:24:58,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:24:58,953 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:24:58,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 01:24:59,099 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-11-29 01:24:59,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:24:59,102 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 01:24:59,106 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:24:59,211 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 01:24:59,211 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:24:59,487 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 01:24:59,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545063034] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:24:59,488 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:24:59,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2023-11-29 01:24:59,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585103284] [2023-11-29 01:24:59,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:24:59,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 01:24:59,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:24:59,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 01:24:59,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2023-11-29 01:24:59,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 291 [2023-11-29 01:24:59,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 276 transitions, 707 flow. Second operand has 23 states, 23 states have (on average 235.04347826086956) internal successors, (5406), 23 states have internal predecessors, (5406), 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) [2023-11-29 01:24:59,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:24:59,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 291 [2023-11-29 01:24:59,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:25:00,352 INFO L124 PetriNetUnfolderBase]: 95/1258 cut-off events. [2023-11-29 01:25:00,353 INFO L125 PetriNetUnfolderBase]: For 133/136 co-relation queries the response was YES. [2023-11-29 01:25:00,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1613 conditions, 1258 events. 95/1258 cut-off events. For 133/136 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 8317 event pairs, 72 based on Foata normal form. 3/1157 useless extension candidates. Maximal degree in co-relation 1375. Up to 179 conditions per place. [2023-11-29 01:25:00,365 INFO L140 encePairwiseOnDemand]: 285/291 looper letters, 34 selfloop transitions, 30 changer transitions 0/293 dead transitions. [2023-11-29 01:25:00,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 293 transitions, 963 flow [2023-11-29 01:25:00,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-29 01:25:00,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-11-29 01:25:00,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 7057 transitions. [2023-11-29 01:25:00,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8083619702176403 [2023-11-29 01:25:00,390 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 7057 transitions. [2023-11-29 01:25:00,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 7057 transitions. [2023-11-29 01:25:00,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:25:00,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 7057 transitions. [2023-11-29 01:25:00,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 235.23333333333332) internal successors, (7057), 30 states have internal predecessors, (7057), 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) [2023-11-29 01:25:00,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 291.0) internal successors, (9021), 31 states have internal predecessors, (9021), 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) [2023-11-29 01:25:00,451 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 291.0) internal successors, (9021), 31 states have internal predecessors, (9021), 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) [2023-11-29 01:25:00,451 INFO L175 Difference]: Start difference. First operand has 291 places, 276 transitions, 707 flow. Second operand 30 states and 7057 transitions. [2023-11-29 01:25:00,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 293 transitions, 963 flow [2023-11-29 01:25:00,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 293 transitions, 933 flow, removed 9 selfloop flow, removed 6 redundant places. [2023-11-29 01:25:00,464 INFO L231 Difference]: Finished difference. Result has 318 places, 286 transitions, 835 flow [2023-11-29 01:25:00,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=683, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=835, PETRI_PLACES=318, PETRI_TRANSITIONS=286} [2023-11-29 01:25:00,466 INFO L281 CegarLoopForPetriNet]: 259 programPoint places, 59 predicate places. [2023-11-29 01:25:00,466 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 286 transitions, 835 flow [2023-11-29 01:25:00,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 235.04347826086956) internal successors, (5406), 23 states have internal predecessors, (5406), 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) [2023-11-29 01:25:00,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:25:00,470 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 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] [2023-11-29 01:25:00,476 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 01:25:00,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:25:00,681 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-11-29 01:25:00,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:25:00,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1163017207, now seen corresponding path program 4 times [2023-11-29 01:25:00,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:25:00,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817026706] [2023-11-29 01:25:00,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:25:00,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:25:00,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:25:00,721 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 01:25:00,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:25:00,775 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 01:25:00,775 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 01:25:00,777 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-11-29 01:25:00,779 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2023-11-29 01:25:00,779 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2023-11-29 01:25:00,779 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2023-11-29 01:25:00,780 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2023-11-29 01:25:00,780 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2023-11-29 01:25:00,780 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2023-11-29 01:25:00,780 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2023-11-29 01:25:00,781 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2023-11-29 01:25:00,781 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2023-11-29 01:25:00,781 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2023-11-29 01:25:00,781 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2023-11-29 01:25:00,781 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2023-11-29 01:25:00,782 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2023-11-29 01:25:00,782 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2023-11-29 01:25:00,782 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2023-11-29 01:25:00,782 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2023-11-29 01:25:00,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 01:25:00,783 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1] [2023-11-29 01:25:00,786 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 01:25:00,786 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-29 01:25:00,854 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-29 01:25:00,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 361 places, 407 transitions, 830 flow [2023-11-29 01:25:01,074 INFO L124 PetriNetUnfolderBase]: 87/709 cut-off events. [2023-11-29 01:25:01,075 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-29 01:25:01,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 721 conditions, 709 events. 87/709 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 3946 event pairs, 0 based on Foata normal form. 0/589 useless extension candidates. Maximal degree in co-relation 428. Up to 12 conditions per place. [2023-11-29 01:25:01,093 INFO L82 GeneralOperation]: Start removeDead. Operand has 361 places, 407 transitions, 830 flow [2023-11-29 01:25:01,109 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 361 places, 407 transitions, 830 flow [2023-11-29 01:25:01,111 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:25:01,112 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;@199edfa1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:25:01,112 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-11-29 01:25:01,124 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 01:25:01,124 INFO L124 PetriNetUnfolderBase]: 7/89 cut-off events. [2023-11-29 01:25:01,124 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 01:25:01,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:25:01,124 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] [2023-11-29 01:25:01,125 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-29 01:25:01,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:25:01,126 INFO L85 PathProgramCache]: Analyzing trace with hash -996074242, now seen corresponding path program 1 times [2023-11-29 01:25:01,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:25:01,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087969960] [2023-11-29 01:25:01,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:25:01,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:25:01,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:25:01,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:25:01,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:25:01,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087969960] [2023-11-29 01:25:01,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087969960] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:25:01,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:25:01,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:25:01,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985883673] [2023-11-29 01:25:01,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:25:01,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:25:01,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:25:01,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:25:01,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:25:01,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 407 [2023-11-29 01:25:01,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 407 transitions, 830 flow. Second operand has 3 states, 3 states have (on average 329.3333333333333) internal successors, (988), 3 states have internal predecessors, (988), 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) [2023-11-29 01:25:01,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:25:01,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 407 [2023-11-29 01:25:01,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:25:03,813 INFO L124 PetriNetUnfolderBase]: 1782/12827 cut-off events. [2023-11-29 01:25:03,813 INFO L125 PetriNetUnfolderBase]: For 119/131 co-relation queries the response was YES. [2023-11-29 01:25:03,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15491 conditions, 12827 events. 1782/12827 cut-off events. For 119/131 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 157930 event pairs, 1464 based on Foata normal form. 3186/14940 useless extension candidates. Maximal degree in co-relation 13807. Up to 2601 conditions per place. [2023-11-29 01:25:03,919 INFO L140 encePairwiseOnDemand]: 362/407 looper letters, 33 selfloop transitions, 2 changer transitions 0/357 dead transitions. [2023-11-29 01:25:03,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 357 transitions, 800 flow [2023-11-29 01:25:03,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:25:03,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:25:03,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1063 transitions. [2023-11-29 01:25:03,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8705978705978706 [2023-11-29 01:25:03,923 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1063 transitions. [2023-11-29 01:25:03,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1063 transitions. [2023-11-29 01:25:03,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:25:03,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1063 transitions. [2023-11-29 01:25:03,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 354.3333333333333) internal successors, (1063), 3 states have internal predecessors, (1063), 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) [2023-11-29 01:25:03,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 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) [2023-11-29 01:25:03,930 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 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) [2023-11-29 01:25:03,930 INFO L175 Difference]: Start difference. First operand has 361 places, 407 transitions, 830 flow. Second operand 3 states and 1063 transitions. [2023-11-29 01:25:03,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 357 transitions, 800 flow [2023-11-29 01:25:03,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 357 transitions, 800 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 01:25:03,939 INFO L231 Difference]: Finished difference. Result has 355 places, 357 transitions, 740 flow [2023-11-29 01:25:03,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=728, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=740, PETRI_PLACES=355, PETRI_TRANSITIONS=357} [2023-11-29 01:25:03,941 INFO L281 CegarLoopForPetriNet]: 361 programPoint places, -6 predicate places. [2023-11-29 01:25:03,941 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 357 transitions, 740 flow [2023-11-29 01:25:03,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 329.3333333333333) internal successors, (988), 3 states have internal predecessors, (988), 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) [2023-11-29 01:25:03,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:25:03,942 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] [2023-11-29 01:25:03,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 01:25:03,942 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-29 01:25:03,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:25:03,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1434452907, now seen corresponding path program 1 times [2023-11-29 01:25:03,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:25:03,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685062101] [2023-11-29 01:25:03,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:25:03,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:25:03,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:25:04,014 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:25:04,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:25:04,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685062101] [2023-11-29 01:25:04,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685062101] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:25:04,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997185802] [2023-11-29 01:25:04,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:25:04,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:25:04,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:25:04,019 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:25:04,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 01:25:04,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:25:04,137 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 01:25:04,138 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:25:04,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:25:04,148 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:25:04,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997185802] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:25:04,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:25:04,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-29 01:25:04,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654365202] [2023-11-29 01:25:04,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:25:04,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:25:04,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:25:04,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:25:04,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:25:04,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 407 [2023-11-29 01:25:04,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 357 transitions, 740 flow. Second operand has 3 states, 3 states have (on average 329.3333333333333) internal successors, (988), 3 states have internal predecessors, (988), 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) [2023-11-29 01:25:04,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:25:04,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 407 [2023-11-29 01:25:04,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:25:06,417 INFO L124 PetriNetUnfolderBase]: 2254/14485 cut-off events. [2023-11-29 01:25:06,417 INFO L125 PetriNetUnfolderBase]: For 193/194 co-relation queries the response was YES. [2023-11-29 01:25:06,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17817 conditions, 14485 events. 2254/14485 cut-off events. For 193/194 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 180983 event pairs, 1912 based on Foata normal form. 1/13210 useless extension candidates. Maximal degree in co-relation 17784. Up to 3253 conditions per place. [2023-11-29 01:25:06,556 INFO L140 encePairwiseOnDemand]: 404/407 looper letters, 41 selfloop transitions, 2 changer transitions 0/366 dead transitions. [2023-11-29 01:25:06,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 366 transitions, 844 flow [2023-11-29 01:25:06,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:25:06,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:25:06,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1028 transitions. [2023-11-29 01:25:06,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8419328419328419 [2023-11-29 01:25:06,561 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1028 transitions. [2023-11-29 01:25:06,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1028 transitions. [2023-11-29 01:25:06,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:25:06,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1028 transitions. [2023-11-29 01:25:06,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 342.6666666666667) internal successors, (1028), 3 states have internal predecessors, (1028), 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) [2023-11-29 01:25:06,568 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 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) [2023-11-29 01:25:06,569 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 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) [2023-11-29 01:25:06,569 INFO L175 Difference]: Start difference. First operand has 355 places, 357 transitions, 740 flow. Second operand 3 states and 1028 transitions. [2023-11-29 01:25:06,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 366 transitions, 844 flow [2023-11-29 01:25:06,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 366 transitions, 842 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 01:25:06,582 INFO L231 Difference]: Finished difference. Result has 357 places, 358 transitions, 750 flow [2023-11-29 01:25:06,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=738, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=750, PETRI_PLACES=357, PETRI_TRANSITIONS=358} [2023-11-29 01:25:06,584 INFO L281 CegarLoopForPetriNet]: 361 programPoint places, -4 predicate places. [2023-11-29 01:25:06,584 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 358 transitions, 750 flow [2023-11-29 01:25:06,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 329.3333333333333) internal successors, (988), 3 states have internal predecessors, (988), 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) [2023-11-29 01:25:06,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:25:06,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:25:06,591 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 01:25:06,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-29 01:25:06,787 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-29 01:25:06,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:25:06,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1465531639, now seen corresponding path program 1 times [2023-11-29 01:25:06,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:25:06,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567853793] [2023-11-29 01:25:06,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:25:06,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:25:06,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:25:06,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:25:06,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:25:06,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567853793] [2023-11-29 01:25:06,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567853793] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:25:06,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828961670] [2023-11-29 01:25:06,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:25:06,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:25:06,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:25:06,872 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:25:06,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 01:25:06,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:25:06,995 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 01:25:06,997 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:25:07,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 01:25:07,011 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:25:07,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828961670] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:25:07,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:25:07,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-29 01:25:07,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303384853] [2023-11-29 01:25:07,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:25:07,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:25:07,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:25:07,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:25:07,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:25:07,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 407 [2023-11-29 01:25:07,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 358 transitions, 750 flow. Second operand has 3 states, 3 states have (on average 329.6666666666667) internal successors, (989), 3 states have internal predecessors, (989), 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) [2023-11-29 01:25:07,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:25:07,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 407 [2023-11-29 01:25:07,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:25:10,983 INFO L124 PetriNetUnfolderBase]: 3780/24899 cut-off events. [2023-11-29 01:25:10,983 INFO L125 PetriNetUnfolderBase]: For 152/156 co-relation queries the response was YES. [2023-11-29 01:25:11,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30455 conditions, 24899 events. 3780/24899 cut-off events. For 152/156 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 334250 event pairs, 1768 based on Foata normal form. 90/23084 useless extension candidates. Maximal degree in co-relation 30414. Up to 3212 conditions per place. [2023-11-29 01:25:11,175 INFO L140 encePairwiseOnDemand]: 404/407 looper letters, 57 selfloop transitions, 2 changer transitions 0/383 dead transitions. [2023-11-29 01:25:11,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 383 transitions, 918 flow [2023-11-29 01:25:11,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:25:11,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:25:11,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1044 transitions. [2023-11-29 01:25:11,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.855036855036855 [2023-11-29 01:25:11,179 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1044 transitions. [2023-11-29 01:25:11,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1044 transitions. [2023-11-29 01:25:11,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:25:11,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1044 transitions. [2023-11-29 01:25:11,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 348.0) internal successors, (1044), 3 states have internal predecessors, (1044), 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) [2023-11-29 01:25:11,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 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) [2023-11-29 01:25:11,186 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 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) [2023-11-29 01:25:11,186 INFO L175 Difference]: Start difference. First operand has 357 places, 358 transitions, 750 flow. Second operand 3 states and 1044 transitions. [2023-11-29 01:25:11,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 383 transitions, 918 flow [2023-11-29 01:25:11,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 383 transitions, 916 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 01:25:11,194 INFO L231 Difference]: Finished difference. Result has 359 places, 359 transitions, 760 flow [2023-11-29 01:25:11,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=760, PETRI_PLACES=359, PETRI_TRANSITIONS=359} [2023-11-29 01:25:11,196 INFO L281 CegarLoopForPetriNet]: 361 programPoint places, -2 predicate places. [2023-11-29 01:25:11,197 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 359 transitions, 760 flow [2023-11-29 01:25:11,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 329.6666666666667) internal successors, (989), 3 states have internal predecessors, (989), 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) [2023-11-29 01:25:11,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:25:11,198 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] [2023-11-29 01:25:11,203 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 01:25:11,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-29 01:25:11,399 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-29 01:25:11,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:25:11,399 INFO L85 PathProgramCache]: Analyzing trace with hash -980676230, now seen corresponding path program 1 times [2023-11-29 01:25:11,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:25:11,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82820805] [2023-11-29 01:25:11,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:25:11,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:25:11,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:25:11,494 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-29 01:25:11,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:25:11,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82820805] [2023-11-29 01:25:11,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82820805] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:25:11,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392265126] [2023-11-29 01:25:11,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:25:11,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:25:11,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:25:11,497 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:25:11,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 01:25:11,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:25:11,622 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 01:25:11,624 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:25:11,648 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-29 01:25:11,649 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:25:11,686 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-29 01:25:11,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392265126] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:25:11,686 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:25:11,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-29 01:25:11,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382678681] [2023-11-29 01:25:11,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:25:11,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:25:11,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:25:11,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:25:11,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:25:11,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 407 [2023-11-29 01:25:11,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 359 transitions, 760 flow. Second operand has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 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) [2023-11-29 01:25:11,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:25:11,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 407 [2023-11-29 01:25:11,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:25:15,621 INFO L124 PetriNetUnfolderBase]: 3247/22657 cut-off events. [2023-11-29 01:25:15,621 INFO L125 PetriNetUnfolderBase]: For 157/167 co-relation queries the response was YES. [2023-11-29 01:25:15,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27456 conditions, 22657 events. 3247/22657 cut-off events. For 157/167 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 302662 event pairs, 2680 based on Foata normal form. 2/20781 useless extension candidates. Maximal degree in co-relation 27391. Up to 4691 conditions per place. [2023-11-29 01:25:15,791 INFO L140 encePairwiseOnDemand]: 401/407 looper letters, 37 selfloop transitions, 9 changer transitions 0/367 dead transitions. [2023-11-29 01:25:15,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 367 transitions, 870 flow [2023-11-29 01:25:15,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:25:15,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 01:25:15,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2973 transitions. [2023-11-29 01:25:15,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8116298116298116 [2023-11-29 01:25:15,800 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2973 transitions. [2023-11-29 01:25:15,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2973 transitions. [2023-11-29 01:25:15,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:25:15,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2973 transitions. [2023-11-29 01:25:15,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 330.3333333333333) internal successors, (2973), 9 states have internal predecessors, (2973), 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) [2023-11-29 01:25:15,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 407.0) internal successors, (4070), 10 states have internal predecessors, (4070), 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) [2023-11-29 01:25:15,818 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 407.0) internal successors, (4070), 10 states have internal predecessors, (4070), 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) [2023-11-29 01:25:15,818 INFO L175 Difference]: Start difference. First operand has 359 places, 359 transitions, 760 flow. Second operand 9 states and 2973 transitions. [2023-11-29 01:25:15,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 367 transitions, 870 flow [2023-11-29 01:25:15,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 367 transitions, 868 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 01:25:15,828 INFO L231 Difference]: Finished difference. Result has 369 places, 365 transitions, 808 flow [2023-11-29 01:25:15,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=758, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=808, PETRI_PLACES=369, PETRI_TRANSITIONS=365} [2023-11-29 01:25:15,829 INFO L281 CegarLoopForPetriNet]: 361 programPoint places, 8 predicate places. [2023-11-29 01:25:15,829 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 365 transitions, 808 flow [2023-11-29 01:25:15,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 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) [2023-11-29 01:25:15,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:25:15,831 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 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] [2023-11-29 01:25:15,836 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 01:25:16,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 01:25:16,032 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-29 01:25:16,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:25:16,032 INFO L85 PathProgramCache]: Analyzing trace with hash -531220518, now seen corresponding path program 2 times [2023-11-29 01:25:16,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:25:16,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951561516] [2023-11-29 01:25:16,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:25:16,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:25:16,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:25:16,154 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-29 01:25:16,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:25:16,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951561516] [2023-11-29 01:25:16,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951561516] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:25:16,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040101635] [2023-11-29 01:25:16,156 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:25:16,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:25:16,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:25:16,160 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:25:16,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 01:25:16,272 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:25:16,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:25:16,273 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 01:25:16,275 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:25:16,319 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-29 01:25:16,319 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:25:16,424 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-29 01:25:16,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040101635] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:25:16,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:25:16,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-11-29 01:25:16,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171423725] [2023-11-29 01:25:16,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:25:16,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 01:25:16,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:25:16,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 01:25:16,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-11-29 01:25:16,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 407 [2023-11-29 01:25:16,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 365 transitions, 808 flow. Second operand has 18 states, 18 states have (on average 327.0) internal successors, (5886), 18 states have internal predecessors, (5886), 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) [2023-11-29 01:25:16,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:25:16,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 407 [2023-11-29 01:25:16,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:25:20,268 INFO L124 PetriNetUnfolderBase]: 3247/22677 cut-off events. [2023-11-29 01:25:20,268 INFO L125 PetriNetUnfolderBase]: For 183/193 co-relation queries the response was YES. [2023-11-29 01:25:20,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27540 conditions, 22677 events. 3247/22677 cut-off events. For 183/193 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 302599 event pairs, 2680 based on Foata normal form. 4/20803 useless extension candidates. Maximal degree in co-relation 27394. Up to 4691 conditions per place. [2023-11-29 01:25:20,442 INFO L140 encePairwiseOnDemand]: 401/407 looper letters, 41 selfloop transitions, 21 changer transitions 0/383 dead transitions. [2023-11-29 01:25:20,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 383 transitions, 1028 flow [2023-11-29 01:25:20,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 01:25:20,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-29 01:25:20,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 6891 transitions. [2023-11-29 01:25:20,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8062478062478062 [2023-11-29 01:25:20,463 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 6891 transitions. [2023-11-29 01:25:20,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 6891 transitions. [2023-11-29 01:25:20,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:25:20,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 6891 transitions. [2023-11-29 01:25:20,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 328.14285714285717) internal successors, (6891), 21 states have internal predecessors, (6891), 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) [2023-11-29 01:25:20,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 407.0) internal successors, (8954), 22 states have internal predecessors, (8954), 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) [2023-11-29 01:25:20,506 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 407.0) internal successors, (8954), 22 states have internal predecessors, (8954), 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) [2023-11-29 01:25:20,506 INFO L175 Difference]: Start difference. First operand has 369 places, 365 transitions, 808 flow. Second operand 21 states and 6891 transitions. [2023-11-29 01:25:20,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 383 transitions, 1028 flow [2023-11-29 01:25:20,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 383 transitions, 1014 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-29 01:25:20,519 INFO L231 Difference]: Finished difference. Result has 393 places, 378 transitions, 932 flow [2023-11-29 01:25:20,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=802, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=932, PETRI_PLACES=393, PETRI_TRANSITIONS=378} [2023-11-29 01:25:20,520 INFO L281 CegarLoopForPetriNet]: 361 programPoint places, 32 predicate places. [2023-11-29 01:25:20,521 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 378 transitions, 932 flow [2023-11-29 01:25:20,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 327.0) internal successors, (5886), 18 states have internal predecessors, (5886), 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) [2023-11-29 01:25:20,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:25:20,522 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 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] [2023-11-29 01:25:20,528 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 01:25:20,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:25:20,725 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-29 01:25:20,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:25:20,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1904010086, now seen corresponding path program 3 times [2023-11-29 01:25:20,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:25:20,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234345564] [2023-11-29 01:25:20,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:25:20,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:25:20,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:25:21,067 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-29 01:25:21,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:25:21,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234345564] [2023-11-29 01:25:21,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234345564] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:25:21,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964408355] [2023-11-29 01:25:21,068 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 01:25:21,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:25:21,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:25:21,069 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:25:21,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 01:25:21,238 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-11-29 01:25:21,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:25:21,240 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 01:25:21,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:25:21,331 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-29 01:25:21,332 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:25:21,519 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-29 01:25:21,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964408355] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:25:21,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:25:21,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2023-11-29 01:25:21,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578918568] [2023-11-29 01:25:21,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:25:21,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 01:25:21,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:25:21,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 01:25:21,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2023-11-29 01:25:21,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 407 [2023-11-29 01:25:21,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 378 transitions, 932 flow. Second operand has 23 states, 23 states have (on average 327.0869565217391) internal successors, (7523), 23 states have internal predecessors, (7523), 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) [2023-11-29 01:25:21,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:25:21,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 407 [2023-11-29 01:25:21,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:25:26,119 INFO L124 PetriNetUnfolderBase]: 3247/22692 cut-off events. [2023-11-29 01:25:26,119 INFO L125 PetriNetUnfolderBase]: For 284/294 co-relation queries the response was YES. [2023-11-29 01:25:26,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27638 conditions, 22692 events. 3247/22692 cut-off events. For 284/294 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 302955 event pairs, 2680 based on Foata normal form. 3/20817 useless extension candidates. Maximal degree in co-relation 27398. Up to 4691 conditions per place. [2023-11-29 01:25:26,273 INFO L140 encePairwiseOnDemand]: 401/407 looper letters, 44 selfloop transitions, 30 changer transitions 0/395 dead transitions. [2023-11-29 01:25:26,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 395 transitions, 1208 flow [2023-11-29 01:25:26,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-29 01:25:26,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-11-29 01:25:26,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 9827 transitions. [2023-11-29 01:25:26,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8048321048321049 [2023-11-29 01:25:26,281 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 9827 transitions. [2023-11-29 01:25:26,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 9827 transitions. [2023-11-29 01:25:26,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:25:26,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 9827 transitions. [2023-11-29 01:25:26,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 327.56666666666666) internal successors, (9827), 30 states have internal predecessors, (9827), 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) [2023-11-29 01:25:26,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 407.0) internal successors, (12617), 31 states have internal predecessors, (12617), 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) [2023-11-29 01:25:26,304 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 407.0) internal successors, (12617), 31 states have internal predecessors, (12617), 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) [2023-11-29 01:25:26,304 INFO L175 Difference]: Start difference. First operand has 393 places, 378 transitions, 932 flow. Second operand 30 states and 9827 transitions. [2023-11-29 01:25:26,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 395 transitions, 1208 flow [2023-11-29 01:25:26,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 395 transitions, 1178 flow, removed 9 selfloop flow, removed 6 redundant places. [2023-11-29 01:25:26,311 INFO L231 Difference]: Finished difference. Result has 420 places, 388 transitions, 1060 flow [2023-11-29 01:25:26,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=908, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1060, PETRI_PLACES=420, PETRI_TRANSITIONS=388} [2023-11-29 01:25:26,312 INFO L281 CegarLoopForPetriNet]: 361 programPoint places, 59 predicate places. [2023-11-29 01:25:26,312 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 388 transitions, 1060 flow [2023-11-29 01:25:26,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 327.0869565217391) internal successors, (7523), 23 states have internal predecessors, (7523), 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) [2023-11-29 01:25:26,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:25:26,314 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 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] [2023-11-29 01:25:26,318 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 01:25:26,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 01:25:26,514 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-29 01:25:26,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:25:26,515 INFO L85 PathProgramCache]: Analyzing trace with hash -799764591, now seen corresponding path program 4 times [2023-11-29 01:25:26,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:25:26,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672191000] [2023-11-29 01:25:26,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:25:26,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:25:26,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:25:26,539 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 01:25:26,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:25:26,564 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 01:25:26,564 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 01:25:26,565 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2023-11-29 01:25:26,565 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2023-11-29 01:25:26,565 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2023-11-29 01:25:26,565 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2023-11-29 01:25:26,565 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2023-11-29 01:25:26,565 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2023-11-29 01:25:26,565 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2023-11-29 01:25:26,565 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2023-11-29 01:25:26,566 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2023-11-29 01:25:26,566 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2023-11-29 01:25:26,566 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2023-11-29 01:25:26,566 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2023-11-29 01:25:26,566 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2023-11-29 01:25:26,566 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2023-11-29 01:25:26,566 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2023-11-29 01:25:26,567 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2023-11-29 01:25:26,567 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2023-11-29 01:25:26,567 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2023-11-29 01:25:26,567 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2023-11-29 01:25:26,567 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2023-11-29 01:25:26,567 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2023-11-29 01:25:26,567 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2023-11-29 01:25:26,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 01:25:26,568 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1] [2023-11-29 01:25:26,568 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 01:25:26,568 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-29 01:25:26,629 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-29 01:25:26,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 463 places, 523 transitions, 1073 flow [2023-11-29 01:25:26,860 INFO L124 PetriNetUnfolderBase]: 127/1039 cut-off events. [2023-11-29 01:25:26,860 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-29 01:25:26,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1064 conditions, 1039 events. 127/1039 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 6306 event pairs, 1 based on Foata normal form. 0/865 useless extension candidates. Maximal degree in co-relation 717. Up to 16 conditions per place. [2023-11-29 01:25:26,879 INFO L82 GeneralOperation]: Start removeDead. Operand has 463 places, 523 transitions, 1073 flow [2023-11-29 01:25:26,888 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 463 places, 523 transitions, 1073 flow [2023-11-29 01:25:26,889 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:25:26,890 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;@199edfa1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:25:26,890 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2023-11-29 01:25:26,895 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 01:25:26,896 INFO L124 PetriNetUnfolderBase]: 7/89 cut-off events. [2023-11-29 01:25:26,896 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 01:25:26,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:25:26,896 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] [2023-11-29 01:25:26,896 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-29 01:25:26,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:25:26,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1689608770, now seen corresponding path program 1 times [2023-11-29 01:25:26,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:25:26,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171780283] [2023-11-29 01:25:26,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:25:26,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:25:26,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:25:26,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:25:26,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:25:26,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171780283] [2023-11-29 01:25:26,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171780283] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:25:26,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:25:26,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:25:26,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541195212] [2023-11-29 01:25:26,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:25:26,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:25:26,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:25:26,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:25:26,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:25:26,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 420 out of 523 [2023-11-29 01:25:26,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 523 transitions, 1073 flow. Second operand has 3 states, 3 states have (on average 421.3333333333333) internal successors, (1264), 3 states have internal predecessors, (1264), 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) [2023-11-29 01:25:26,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:25:26,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 420 of 523 [2023-11-29 01:25:26,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:25:48,286 INFO L124 PetriNetUnfolderBase]: 24944/126607 cut-off events. [2023-11-29 01:25:48,287 INFO L125 PetriNetUnfolderBase]: For 2065/2097 co-relation queries the response was YES. [2023-11-29 01:25:49,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159984 conditions, 126607 events. 24944/126607 cut-off events. For 2065/2097 co-relation queries the response was YES. Maximal size of possible extension queue 2555. Compared 2111372 event pairs, 21001 based on Foata normal form. 39527/156223 useless extension candidates. Maximal degree in co-relation 142471. Up to 32510 conditions per place. [2023-11-29 01:25:50,221 INFO L140 encePairwiseOnDemand]: 465/523 looper letters, 43 selfloop transitions, 2 changer transitions 0/457 dead transitions. [2023-11-29 01:25:50,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 457 transitions, 1031 flow [2023-11-29 01:25:50,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:25:50,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:25:50,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1362 transitions. [2023-11-29 01:25:50,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8680688336520076 [2023-11-29 01:25:50,225 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1362 transitions. [2023-11-29 01:25:50,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1362 transitions. [2023-11-29 01:25:50,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:25:50,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1362 transitions. [2023-11-29 01:25:50,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 454.0) internal successors, (1362), 3 states have internal predecessors, (1362), 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) [2023-11-29 01:25:50,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 523.0) internal successors, (2092), 4 states have internal predecessors, (2092), 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) [2023-11-29 01:25:50,231 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 523.0) internal successors, (2092), 4 states have internal predecessors, (2092), 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) [2023-11-29 01:25:50,231 INFO L175 Difference]: Start difference. First operand has 463 places, 523 transitions, 1073 flow. Second operand 3 states and 1362 transitions. [2023-11-29 01:25:50,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 457 transitions, 1031 flow [2023-11-29 01:25:50,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 457 transitions, 1031 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 01:25:50,250 INFO L231 Difference]: Finished difference. Result has 454 places, 457 transitions, 951 flow [2023-11-29 01:25:50,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=523, PETRI_DIFFERENCE_MINUEND_FLOW=939, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=951, PETRI_PLACES=454, PETRI_TRANSITIONS=457} [2023-11-29 01:25:50,251 INFO L281 CegarLoopForPetriNet]: 463 programPoint places, -9 predicate places. [2023-11-29 01:25:50,251 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 457 transitions, 951 flow [2023-11-29 01:25:50,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 421.3333333333333) internal successors, (1264), 3 states have internal predecessors, (1264), 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) [2023-11-29 01:25:50,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:25:50,252 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] [2023-11-29 01:25:50,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 01:25:50,252 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-29 01:25:50,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:25:50,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1730716384, now seen corresponding path program 1 times [2023-11-29 01:25:50,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:25:50,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778438708] [2023-11-29 01:25:50,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:25:50,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:25:50,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:25:50,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:25:50,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:25:50,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778438708] [2023-11-29 01:25:50,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778438708] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:25:50,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491225412] [2023-11-29 01:25:50,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:25:50,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:25:50,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:25:50,324 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:25:50,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 01:25:50,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:25:50,448 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 01:25:50,449 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:25:50,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:25:50,457 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:25:50,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491225412] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:25:50,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:25:50,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-29 01:25:50,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946077416] [2023-11-29 01:25:50,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:25:50,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:25:50,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:25:50,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:25:50,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:25:50,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 420 out of 523 [2023-11-29 01:25:50,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 457 transitions, 951 flow. Second operand has 3 states, 3 states have (on average 421.3333333333333) internal successors, (1264), 3 states have internal predecessors, (1264), 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) [2023-11-29 01:25:50,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:25:50,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 420 of 523 [2023-11-29 01:25:50,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:26:18,511 INFO L124 PetriNetUnfolderBase]: 30497/141004 cut-off events. [2023-11-29 01:26:18,511 INFO L125 PetriNetUnfolderBase]: For 3881/3884 co-relation queries the response was YES. [2023-11-29 01:26:19,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181489 conditions, 141004 events. 30497/141004 cut-off events. For 3881/3884 co-relation queries the response was YES. Maximal size of possible extension queue 2998. Compared 2353027 event pairs, 27281 based on Foata normal form. 1/129649 useless extension candidates. Maximal degree in co-relation 181455. Up to 39711 conditions per place. [2023-11-29 01:26:20,667 INFO L140 encePairwiseOnDemand]: 520/523 looper letters, 51 selfloop transitions, 2 changer transitions 0/466 dead transitions. [2023-11-29 01:26:20,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 466 transitions, 1075 flow [2023-11-29 01:26:20,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:26:20,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:26:20,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1314 transitions. [2023-11-29 01:26:20,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8374760994263862 [2023-11-29 01:26:20,670 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1314 transitions. [2023-11-29 01:26:20,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1314 transitions. [2023-11-29 01:26:20,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:26:20,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1314 transitions. [2023-11-29 01:26:20,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 438.0) internal successors, (1314), 3 states have internal predecessors, (1314), 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) [2023-11-29 01:26:20,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 523.0) internal successors, (2092), 4 states have internal predecessors, (2092), 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) [2023-11-29 01:26:20,675 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 523.0) internal successors, (2092), 4 states have internal predecessors, (2092), 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) [2023-11-29 01:26:20,676 INFO L175 Difference]: Start difference. First operand has 454 places, 457 transitions, 951 flow. Second operand 3 states and 1314 transitions. [2023-11-29 01:26:20,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 466 transitions, 1075 flow [2023-11-29 01:26:20,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 466 transitions, 1073 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 01:26:20,688 INFO L231 Difference]: Finished difference. Result has 456 places, 458 transitions, 961 flow [2023-11-29 01:26:20,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=523, PETRI_DIFFERENCE_MINUEND_FLOW=949, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=455, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=961, PETRI_PLACES=456, PETRI_TRANSITIONS=458} [2023-11-29 01:26:20,689 INFO L281 CegarLoopForPetriNet]: 463 programPoint places, -7 predicate places. [2023-11-29 01:26:20,689 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 458 transitions, 961 flow [2023-11-29 01:26:20,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 421.3333333333333) internal successors, (1264), 3 states have internal predecessors, (1264), 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) [2023-11-29 01:26:20,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:26:20,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:26:20,695 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 01:26:20,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 01:26:20,891 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-29 01:26:20,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:26:20,891 INFO L85 PathProgramCache]: Analyzing trace with hash -293602704, now seen corresponding path program 1 times [2023-11-29 01:26:20,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:26:20,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881977833] [2023-11-29 01:26:20,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:26:20,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:26:20,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:26:21,094 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:26:21,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:26:21,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881977833] [2023-11-29 01:26:21,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881977833] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:26:21,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133410985] [2023-11-29 01:26:21,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:26:21,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:26:21,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:26:21,096 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:26:21,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 01:26:21,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:26:21,220 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 01:26:21,221 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:26:21,229 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 01:26:21,229 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:26:21,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133410985] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:26:21,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:26:21,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-29 01:26:21,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137656929] [2023-11-29 01:26:21,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:26:21,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:26:21,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:26:21,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:26:21,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:26:21,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 420 out of 523 [2023-11-29 01:26:21,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 458 transitions, 961 flow. Second operand has 3 states, 3 states have (on average 421.6666666666667) internal successors, (1265), 3 states have internal predecessors, (1265), 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) [2023-11-29 01:26:21,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:26:21,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 420 of 523 [2023-11-29 01:26:21,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:27:08,914 INFO L124 PetriNetUnfolderBase]: 51975/246268 cut-off events. [2023-11-29 01:27:08,914 INFO L125 PetriNetUnfolderBase]: For 2322/2333 co-relation queries the response was YES. [2023-11-29 01:27:11,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 314764 conditions, 246268 events. 51975/246268 cut-off events. For 2322/2333 co-relation queries the response was YES. Maximal size of possible extension queue 4410. Compared 4338212 event pairs, 25193 based on Foata normal form. 819/229340 useless extension candidates. Maximal degree in co-relation 314722. Up to 39751 conditions per place. [2023-11-29 01:27:12,699 INFO L140 encePairwiseOnDemand]: 520/523 looper letters, 75 selfloop transitions, 2 changer transitions 0/491 dead transitions. [2023-11-29 01:27:12,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 491 transitions, 1181 flow [2023-11-29 01:27:12,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:27:12,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:27:12,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1338 transitions. [2023-11-29 01:27:12,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8527724665391969 [2023-11-29 01:27:12,702 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1338 transitions. [2023-11-29 01:27:12,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1338 transitions. [2023-11-29 01:27:12,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:27:12,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1338 transitions. [2023-11-29 01:27:12,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 446.0) internal successors, (1338), 3 states have internal predecessors, (1338), 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) [2023-11-29 01:27:12,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 523.0) internal successors, (2092), 4 states have internal predecessors, (2092), 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) [2023-11-29 01:27:12,708 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 523.0) internal successors, (2092), 4 states have internal predecessors, (2092), 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) [2023-11-29 01:27:12,708 INFO L175 Difference]: Start difference. First operand has 456 places, 458 transitions, 961 flow. Second operand 3 states and 1338 transitions. [2023-11-29 01:27:12,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 491 transitions, 1181 flow [2023-11-29 01:27:12,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 491 transitions, 1179 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 01:27:12,727 INFO L231 Difference]: Finished difference. Result has 458 places, 459 transitions, 971 flow [2023-11-29 01:27:12,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=523, PETRI_DIFFERENCE_MINUEND_FLOW=959, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=971, PETRI_PLACES=458, PETRI_TRANSITIONS=459} [2023-11-29 01:27:12,728 INFO L281 CegarLoopForPetriNet]: 463 programPoint places, -5 predicate places. [2023-11-29 01:27:12,729 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 459 transitions, 971 flow [2023-11-29 01:27:12,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 421.6666666666667) internal successors, (1265), 3 states have internal predecessors, (1265), 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) [2023-11-29 01:27:12,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:27:12,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:27:12,733 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 01:27:12,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 01:27:12,930 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-29 01:27:12,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:27:12,930 INFO L85 PathProgramCache]: Analyzing trace with hash 308146121, now seen corresponding path program 1 times [2023-11-29 01:27:12,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:27:12,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545697608] [2023-11-29 01:27:12,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:27:12,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:27:12,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:12,999 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:27:12,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:27:12,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545697608] [2023-11-29 01:27:12,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545697608] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:27:12,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808592198] [2023-11-29 01:27:13,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:27:13,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:27:13,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:27:13,001 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:27:13,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 01:27:13,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:13,114 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 01:27:13,115 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:27:13,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:27:13,134 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:27:13,160 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:27:13,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808592198] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:27:13,161 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:27:13,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-29 01:27:13,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145461682] [2023-11-29 01:27:13,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:27:13,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:27:13,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:27:13,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:27:13,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:27:13,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 417 out of 523 [2023-11-29 01:27:13,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 459 transitions, 971 flow. Second operand has 10 states, 10 states have (on average 419.1) internal successors, (4191), 10 states have internal predecessors, (4191), 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) [2023-11-29 01:27:13,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:27:13,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 417 of 523 [2023-11-29 01:27:13,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:27:55,681 INFO L124 PetriNetUnfolderBase]: 44715/223265 cut-off events. [2023-11-29 01:27:55,682 INFO L125 PetriNetUnfolderBase]: For 2338/2362 co-relation queries the response was YES. [2023-11-29 01:27:58,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282274 conditions, 223265 events. 44715/223265 cut-off events. For 2338/2362 co-relation queries the response was YES. Maximal size of possible extension queue 4007. Compared 3936247 event pairs, 37769 based on Foata normal form. 2/205893 useless extension candidates. Maximal degree in co-relation 282208. Up to 58009 conditions per place. [2023-11-29 01:27:59,124 INFO L140 encePairwiseOnDemand]: 517/523 looper letters, 47 selfloop transitions, 9 changer transitions 0/467 dead transitions. [2023-11-29 01:27:59,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 467 transitions, 1101 flow [2023-11-29 01:27:59,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:27:59,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 01:27:59,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3811 transitions. [2023-11-29 01:27:59,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8096452092628 [2023-11-29 01:27:59,129 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3811 transitions. [2023-11-29 01:27:59,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3811 transitions. [2023-11-29 01:27:59,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:27:59,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3811 transitions. [2023-11-29 01:27:59,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 423.44444444444446) internal successors, (3811), 9 states have internal predecessors, (3811), 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) [2023-11-29 01:27:59,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 523.0) internal successors, (5230), 10 states have internal predecessors, (5230), 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) [2023-11-29 01:27:59,142 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 523.0) internal successors, (5230), 10 states have internal predecessors, (5230), 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) [2023-11-29 01:27:59,142 INFO L175 Difference]: Start difference. First operand has 458 places, 459 transitions, 971 flow. Second operand 9 states and 3811 transitions. [2023-11-29 01:27:59,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 467 transitions, 1101 flow [2023-11-29 01:27:59,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 467 transitions, 1099 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 01:27:59,160 INFO L231 Difference]: Finished difference. Result has 468 places, 465 transitions, 1019 flow [2023-11-29 01:27:59,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=523, PETRI_DIFFERENCE_MINUEND_FLOW=969, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1019, PETRI_PLACES=468, PETRI_TRANSITIONS=465} [2023-11-29 01:27:59,162 INFO L281 CegarLoopForPetriNet]: 463 programPoint places, 5 predicate places. [2023-11-29 01:27:59,162 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 465 transitions, 1019 flow [2023-11-29 01:27:59,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 419.1) internal successors, (4191), 10 states have internal predecessors, (4191), 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) [2023-11-29 01:27:59,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:27:59,163 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:27:59,167 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 01:27:59,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 01:27:59,364 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-29 01:27:59,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:27:59,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1278706313, now seen corresponding path program 2 times [2023-11-29 01:27:59,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:27:59,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800089521] [2023-11-29 01:27:59,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:27:59,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:27:59,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:59,486 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:27:59,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:27:59,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800089521] [2023-11-29 01:27:59,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800089521] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:27:59,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238923571] [2023-11-29 01:27:59,487 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:27:59,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:27:59,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:27:59,488 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:27:59,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c22e34-a128-4cd6-8993-8fa80f86936e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 01:27:59,632 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 01:27:59,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:27:59,633 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 01:27:59,636 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:27:59,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 01:27:59,688 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-11-29 01:27:59,721 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:27:59,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2023-11-29 01:27:59,758 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:27:59,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2023-11-29 01:27:59,789 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 01:27:59,790 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:27:59,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238923571] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:27:59,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:27:59,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2023-11-29 01:27:59,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115116150] [2023-11-29 01:27:59,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:27:59,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:27:59,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:27:59,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:27:59,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-11-29 01:28:00,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 371 out of 523 [2023-11-29 01:28:00,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 465 transitions, 1019 flow. Second operand has 6 states, 6 states have (on average 372.6666666666667) internal successors, (2236), 6 states have internal predecessors, (2236), 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) [2023-11-29 01:28:00,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:28:00,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 371 of 523 [2023-11-29 01:28:00,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand