./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e9af38-28ea-4513-b857-37796031ee65/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e9af38-28ea-4513-b857-37796031ee65/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e9af38-28ea-4513-b857-37796031ee65/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e9af38-28ea-4513-b857-37796031ee65/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e9af38-28ea-4513-b857-37796031ee65/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e9af38-28ea-4513-b857-37796031ee65/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ebedbc62bd44b0c214a81c07c6f99e850a5d96675b77716f8547d1b39e8b2cf8 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:36:40,673 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:36:40,799 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e9af38-28ea-4513-b857-37796031ee65/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-19 07:36:40,806 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:36:40,806 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:36:40,840 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:36:40,841 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:36:40,842 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:36:40,843 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:36:40,848 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:36:40,849 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:36:40,850 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:36:40,850 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:36:40,852 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:36:40,853 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:36:40,853 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:36:40,854 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:36:40,854 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:36:40,854 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:36:40,855 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:36:40,855 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:36:40,856 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:36:40,856 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-19 07:36:40,857 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:36:40,857 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:36:40,858 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:36:40,858 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:36:40,859 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:36:40,860 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:36:40,860 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:36:40,861 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:36:40,862 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:36:40,862 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:36:40,862 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:36:40,863 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:36:40,863 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:36:40,863 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:36:40,863 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:36:40,863 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:36:40,864 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:36:40,864 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:36:40,864 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_e6e9af38-28ea-4513-b857-37796031ee65/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e9af38-28ea-4513-b857-37796031ee65/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebedbc62bd44b0c214a81c07c6f99e850a5d96675b77716f8547d1b39e8b2cf8 [2023-11-19 07:36:41,227 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:36:41,287 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:36:41,290 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:36:41,291 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:36:41,292 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:36:41,294 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e9af38-28ea-4513-b857-37796031ee65/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i [2023-11-19 07:36:44,470 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:36:44,802 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:36:44,803 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e9af38-28ea-4513-b857-37796031ee65/sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i [2023-11-19 07:36:44,829 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e9af38-28ea-4513-b857-37796031ee65/bin/uautomizer-verify-uCwYo4JHxu/data/8ad662021/88130eba2d714670a22cce6bb5c44c8c/FLAG93a82190f [2023-11-19 07:36:44,844 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e9af38-28ea-4513-b857-37796031ee65/bin/uautomizer-verify-uCwYo4JHxu/data/8ad662021/88130eba2d714670a22cce6bb5c44c8c [2023-11-19 07:36:44,846 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:36:44,848 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:36:44,849 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:36:44,850 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:36:44,863 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:36:44,864 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:36:44" (1/1) ... [2023-11-19 07:36:44,865 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34403d17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:44, skipping insertion in model container [2023-11-19 07:36:44,865 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:36:44" (1/1) ... [2023-11-19 07:36:44,936 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:36:45,543 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:36:45,566 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:36:45,613 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:36:45,691 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:36:45,691 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:45 WrapperNode [2023-11-19 07:36:45,691 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:36:45,693 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:36:45,694 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:36:45,694 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:36:45,703 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:45" (1/1) ... [2023-11-19 07:36:45,737 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:45" (1/1) ... [2023-11-19 07:36:45,795 INFO L138 Inliner]: procedures = 262, calls = 13, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 95 [2023-11-19 07:36:45,796 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:36:45,797 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:36:45,798 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:36:45,798 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:36:45,809 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:45" (1/1) ... [2023-11-19 07:36:45,810 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:45" (1/1) ... [2023-11-19 07:36:45,823 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:45" (1/1) ... [2023-11-19 07:36:45,825 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:45" (1/1) ... [2023-11-19 07:36:45,847 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:45" (1/1) ... [2023-11-19 07:36:45,851 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:45" (1/1) ... [2023-11-19 07:36:45,858 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:45" (1/1) ... [2023-11-19 07:36:45,864 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:45" (1/1) ... [2023-11-19 07:36:45,868 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:36:45,873 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:36:45,874 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:36:45,874 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:36:45,875 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:45" (1/1) ... [2023-11-19 07:36:45,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:36:45,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e9af38-28ea-4513-b857-37796031ee65/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:45,920 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e9af38-28ea-4513-b857-37796031ee65/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:36:45,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e9af38-28ea-4513-b857-37796031ee65/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:36:45,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:36:45,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:36:45,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:36:45,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:36:45,973 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 07:36:45,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:36:45,974 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-19 07:36:45,974 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-19 07:36:45,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:36:45,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:36:45,976 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:36:46,200 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:36:46,203 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:36:46,570 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:36:46,580 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:36:46,583 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-19 07:36:46,588 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:36:46 BoogieIcfgContainer [2023-11-19 07:36:46,589 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:36:46,593 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:36:46,593 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:36:46,597 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:36:46,598 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:36:44" (1/3) ... [2023-11-19 07:36:46,599 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c76261 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:36:46, skipping insertion in model container [2023-11-19 07:36:46,599 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:45" (2/3) ... [2023-11-19 07:36:46,601 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c76261 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:36:46, skipping insertion in model container [2023-11-19 07:36:46,601 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:36:46" (3/3) ... [2023-11-19 07:36:46,603 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_02-funloop_norace.i [2023-11-19 07:36:46,617 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:36:46,629 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:36:46,630 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-19 07:36:46,631 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:36:46,722 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:36:46,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 103 transitions, 210 flow [2023-11-19 07:36:46,814 INFO L124 PetriNetUnfolderBase]: 6/102 cut-off events. [2023-11-19 07:36:46,814 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:36:46,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 102 events. 6/102 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 131 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 80. Up to 2 conditions per place. [2023-11-19 07:36:46,823 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 103 transitions, 210 flow [2023-11-19 07:36:46,828 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 102 transitions, 207 flow [2023-11-19 07:36:46,832 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:36:46,846 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 100 places, 102 transitions, 207 flow [2023-11-19 07:36:46,857 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 100 places, 102 transitions, 207 flow [2023-11-19 07:36:46,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 102 transitions, 207 flow [2023-11-19 07:36:46,922 INFO L124 PetriNetUnfolderBase]: 6/102 cut-off events. [2023-11-19 07:36:46,922 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:36:46,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 102 events. 6/102 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 131 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 80. Up to 2 conditions per place. [2023-11-19 07:36:46,929 INFO L119 LiptonReduction]: Number of co-enabled transitions 3192 [2023-11-19 07:36:48,736 INFO L134 LiptonReduction]: Checked pairs total: 8231 [2023-11-19 07:36:48,736 INFO L136 LiptonReduction]: Total number of compositions: 65 [2023-11-19 07:36:48,763 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:36:48,771 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;@5ed29c90, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:36:48,772 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-19 07:36:48,786 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:36:48,786 INFO L124 PetriNetUnfolderBase]: 1/20 cut-off events. [2023-11-19 07:36:48,786 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:36:48,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:48,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:48,788 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:36:48,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:48,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1246398462, now seen corresponding path program 1 times [2023-11-19 07:36:48,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:48,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11906951] [2023-11-19 07:36:48,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:48,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:48,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:49,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:49,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:49,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11906951] [2023-11-19 07:36:49,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11906951] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:49,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:49,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:36:49,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791694780] [2023-11-19 07:36:49,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:49,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:36:49,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:49,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:36:49,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:49,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 168 [2023-11-19 07:36:49,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 40 transitions, 83 flow. Second operand has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:49,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:49,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 168 [2023-11-19 07:36:49,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:49,303 INFO L124 PetriNetUnfolderBase]: 66/251 cut-off events. [2023-11-19 07:36:49,303 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:36:49,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 389 conditions, 251 events. 66/251 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1097 event pairs, 49 based on Foata normal form. 0/225 useless extension candidates. Maximal degree in co-relation 374. Up to 133 conditions per place. [2023-11-19 07:36:49,308 INFO L140 encePairwiseOnDemand]: 165/168 looper letters, 19 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2023-11-19 07:36:49,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 41 transitions, 127 flow [2023-11-19 07:36:49,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:36:49,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:36:49,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 301 transitions. [2023-11-19 07:36:49,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5972222222222222 [2023-11-19 07:36:49,326 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 301 transitions. [2023-11-19 07:36:49,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 301 transitions. [2023-11-19 07:36:49,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:49,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 301 transitions. [2023-11-19 07:36:49,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:49,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:49,342 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:49,344 INFO L175 Difference]: Start difference. First operand has 41 places, 40 transitions, 83 flow. Second operand 3 states and 301 transitions. [2023-11-19 07:36:49,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 41 transitions, 127 flow [2023-11-19 07:36:49,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 41 transitions, 126 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:36:49,350 INFO L231 Difference]: Finished difference. Result has 43 places, 41 transitions, 94 flow [2023-11-19 07:36:49,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=43, PETRI_TRANSITIONS=41} [2023-11-19 07:36:49,355 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 2 predicate places. [2023-11-19 07:36:49,356 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 41 transitions, 94 flow [2023-11-19 07:36:49,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:49,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:49,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:49,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:36:49,357 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:36:49,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:49,358 INFO L85 PathProgramCache]: Analyzing trace with hash 818206109, now seen corresponding path program 1 times [2023-11-19 07:36:49,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:49,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486584790] [2023-11-19 07:36:49,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:49,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:49,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:49,493 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:49,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:49,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486584790] [2023-11-19 07:36:49,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486584790] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:36:49,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230932236] [2023-11-19 07:36:49,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:49,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:49,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e9af38-28ea-4513-b857-37796031ee65/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:49,497 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e9af38-28ea-4513-b857-37796031ee65/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:36:49,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e9af38-28ea-4513-b857-37796031ee65/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:36:49,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:49,612 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:36:49,617 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:36:49,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:49,666 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:36:49,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:49,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230932236] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:36:49,694 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:36:49,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-19 07:36:49,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386244475] [2023-11-19 07:36:49,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:36:49,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:36:49,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:49,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:36:49,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:36:49,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 168 [2023-11-19 07:36:49,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 41 transitions, 94 flow. Second operand has 7 states, 7 states have (on average 93.71428571428571) internal successors, (656), 7 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:49,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:49,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 168 [2023-11-19 07:36:49,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:49,871 INFO L124 PetriNetUnfolderBase]: 66/254 cut-off events. [2023-11-19 07:36:49,871 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:36:49,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 404 conditions, 254 events. 66/254 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1097 event pairs, 49 based on Foata normal form. 0/228 useless extension candidates. Maximal degree in co-relation 393. Up to 133 conditions per place. [2023-11-19 07:36:49,880 INFO L140 encePairwiseOnDemand]: 165/168 looper letters, 19 selfloop transitions, 5 changer transitions 0/44 dead transitions. [2023-11-19 07:36:49,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 44 transitions, 154 flow [2023-11-19 07:36:49,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:36:49,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:36:49,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 579 transitions. [2023-11-19 07:36:49,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5744047619047619 [2023-11-19 07:36:49,897 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 579 transitions. [2023-11-19 07:36:49,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 579 transitions. [2023-11-19 07:36:49,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:49,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 579 transitions. [2023-11-19 07:36:49,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 96.5) internal successors, (579), 6 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:49,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 168.0) internal successors, (1176), 7 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:49,909 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 168.0) internal successors, (1176), 7 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:49,914 INFO L175 Difference]: Start difference. First operand has 43 places, 41 transitions, 94 flow. Second operand 6 states and 579 transitions. [2023-11-19 07:36:49,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 44 transitions, 154 flow [2023-11-19 07:36:49,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 44 transitions, 150 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-19 07:36:49,916 INFO L231 Difference]: Finished difference. Result has 50 places, 44 transitions, 126 flow [2023-11-19 07:36:49,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=126, PETRI_PLACES=50, PETRI_TRANSITIONS=44} [2023-11-19 07:36:49,919 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 9 predicate places. [2023-11-19 07:36:49,920 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 44 transitions, 126 flow [2023-11-19 07:36:49,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 93.71428571428571) internal successors, (656), 7 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:49,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:49,924 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:49,950 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e9af38-28ea-4513-b857-37796031ee65/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 07:36:50,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e9af38-28ea-4513-b857-37796031ee65/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:50,144 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:36:50,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:50,145 INFO L85 PathProgramCache]: Analyzing trace with hash -2067776719, now seen corresponding path program 2 times [2023-11-19 07:36:50,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:50,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228666057] [2023-11-19 07:36:50,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:50,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:50,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:50,321 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:50,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:50,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228666057] [2023-11-19 07:36:50,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228666057] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:36:50,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812179522] [2023-11-19 07:36:50,322 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:36:50,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:50,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e9af38-28ea-4513-b857-37796031ee65/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:50,324 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e9af38-28ea-4513-b857-37796031ee65/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:36:50,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e9af38-28ea-4513-b857-37796031ee65/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:36:50,430 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-19 07:36:50,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:36:50,432 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-19 07:36:50,436 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:36:50,472 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 [2023-11-19 07:36:50,495 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 [2023-11-19 07:36:50,536 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:36:50,537 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 [2023-11-19 07:36:50,600 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:36:50,601 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 [2023-11-19 07:36:50,636 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 07:36:50,636 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:36:50,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812179522] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:50,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:36:50,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2023-11-19 07:36:50,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068525887] [2023-11-19 07:36:50,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:50,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:36:50,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:50,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:36:50,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:36:50,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 168 [2023-11-19 07:36:50,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 44 transitions, 126 flow. Second operand has 6 states, 6 states have (on average 83.0) internal successors, (498), 6 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:50,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:50,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 168 [2023-11-19 07:36:50,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:51,130 INFO L124 PetriNetUnfolderBase]: 248/590 cut-off events. [2023-11-19 07:36:51,131 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:36:51,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1117 conditions, 590 events. 248/590 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2574 event pairs, 96 based on Foata normal form. 0/533 useless extension candidates. Maximal degree in co-relation 1084. Up to 383 conditions per place. [2023-11-19 07:36:51,138 INFO L140 encePairwiseOnDemand]: 157/168 looper letters, 64 selfloop transitions, 22 changer transitions 0/94 dead transitions. [2023-11-19 07:36:51,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 94 transitions, 398 flow [2023-11-19 07:36:51,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:36:51,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:36:51,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 569 transitions. [2023-11-19 07:36:51,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.564484126984127 [2023-11-19 07:36:51,141 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 569 transitions. [2023-11-19 07:36:51,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 569 transitions. [2023-11-19 07:36:51,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:51,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 569 transitions. [2023-11-19 07:36:51,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 94.83333333333333) internal successors, (569), 6 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:51,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 168.0) internal successors, (1176), 7 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:51,148 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 168.0) internal successors, (1176), 7 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:51,148 INFO L175 Difference]: Start difference. First operand has 50 places, 44 transitions, 126 flow. Second operand 6 states and 569 transitions. [2023-11-19 07:36:51,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 94 transitions, 398 flow [2023-11-19 07:36:51,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 94 transitions, 384 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-19 07:36:51,154 INFO L231 Difference]: Finished difference. Result has 59 places, 65 transitions, 262 flow [2023-11-19 07:36:51,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=262, PETRI_PLACES=59, PETRI_TRANSITIONS=65} [2023-11-19 07:36:51,156 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 18 predicate places. [2023-11-19 07:36:51,156 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 65 transitions, 262 flow [2023-11-19 07:36:51,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.0) internal successors, (498), 6 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:51,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:51,158 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:51,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e9af38-28ea-4513-b857-37796031ee65/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:36:51,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e9af38-28ea-4513-b857-37796031ee65/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:51,376 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:36:51,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:51,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1116044546, now seen corresponding path program 1 times [2023-11-19 07:36:51,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:51,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689241683] [2023-11-19 07:36:51,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:51,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:51,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:51,495 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:51,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:51,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689241683] [2023-11-19 07:36:51,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689241683] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:36:51,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429813953] [2023-11-19 07:36:51,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:51,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:51,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e9af38-28ea-4513-b857-37796031ee65/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:51,498 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e9af38-28ea-4513-b857-37796031ee65/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:36:51,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e9af38-28ea-4513-b857-37796031ee65/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:36:51,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:51,597 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:36:51,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:36:51,616 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:51,616 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:36:51,687 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:51,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429813953] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:36:51,687 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:36:51,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-11-19 07:36:51,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870047861] [2023-11-19 07:36:51,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:36:51,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:36:51,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:51,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:36:51,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:36:51,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 168 [2023-11-19 07:36:51,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 65 transitions, 262 flow. Second operand has 12 states, 12 states have (on average 93.33333333333333) internal successors, (1120), 12 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:51,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:51,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 168 [2023-11-19 07:36:51,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:51,922 INFO L124 PetriNetUnfolderBase]: 125/441 cut-off events. [2023-11-19 07:36:51,923 INFO L125 PetriNetUnfolderBase]: For 97/103 co-relation queries the response was YES. [2023-11-19 07:36:51,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 920 conditions, 441 events. 125/441 cut-off events. For 97/103 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2062 event pairs, 58 based on Foata normal form. 7/410 useless extension candidates. Maximal degree in co-relation 865. Up to 206 conditions per place. [2023-11-19 07:36:51,930 INFO L140 encePairwiseOnDemand]: 165/168 looper letters, 24 selfloop transitions, 11 changer transitions 0/71 dead transitions. [2023-11-19 07:36:51,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 71 transitions, 368 flow [2023-11-19 07:36:51,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:36:51,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-19 07:36:51,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1140 transitions. [2023-11-19 07:36:51,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5654761904761905 [2023-11-19 07:36:51,938 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1140 transitions. [2023-11-19 07:36:51,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1140 transitions. [2023-11-19 07:36:51,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:51,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1140 transitions. [2023-11-19 07:36:51,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 95.0) internal successors, (1140), 12 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:51,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 168.0) internal successors, (2184), 13 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:51,952 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 168.0) internal successors, (2184), 13 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:51,953 INFO L175 Difference]: Start difference. First operand has 59 places, 65 transitions, 262 flow. Second operand 12 states and 1140 transitions. [2023-11-19 07:36:51,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 71 transitions, 368 flow [2023-11-19 07:36:51,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 71 transitions, 368 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:36:51,963 INFO L231 Difference]: Finished difference. Result has 76 places, 71 transitions, 346 flow [2023-11-19 07:36:51,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=346, PETRI_PLACES=76, PETRI_TRANSITIONS=71} [2023-11-19 07:36:51,964 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 35 predicate places. [2023-11-19 07:36:51,964 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 71 transitions, 346 flow [2023-11-19 07:36:51,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 93.33333333333333) internal successors, (1120), 12 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:51,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:51,965 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:51,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e9af38-28ea-4513-b857-37796031ee65/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:36:52,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e9af38-28ea-4513-b857-37796031ee65/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:52,166 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:36:52,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:52,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1744972670, now seen corresponding path program 2 times [2023-11-19 07:36:52,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:52,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215628662] [2023-11-19 07:36:52,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:52,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:52,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:52,614 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-19 07:36:52,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:52,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215628662] [2023-11-19 07:36:52,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215628662] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:52,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:52,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:36:52,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438929038] [2023-11-19 07:36:52,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:52,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:36:52,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:52,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:36:52,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:36:52,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 168 [2023-11-19 07:36:52,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 71 transitions, 346 flow. Second operand has 6 states, 6 states have (on average 83.0) internal successors, (498), 6 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:52,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:52,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 168 [2023-11-19 07:36:52,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:53,138 INFO L124 PetriNetUnfolderBase]: 348/808 cut-off events. [2023-11-19 07:36:53,139 INFO L125 PetriNetUnfolderBase]: For 231/244 co-relation queries the response was YES. [2023-11-19 07:36:53,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1958 conditions, 808 events. 348/808 cut-off events. For 231/244 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3807 event pairs, 107 based on Foata normal form. 3/756 useless extension candidates. Maximal degree in co-relation 1878. Up to 529 conditions per place. [2023-11-19 07:36:53,148 INFO L140 encePairwiseOnDemand]: 157/168 looper letters, 97 selfloop transitions, 30 changer transitions 0/137 dead transitions. [2023-11-19 07:36:53,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 137 transitions, 798 flow [2023-11-19 07:36:53,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:36:53,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:36:53,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 574 transitions. [2023-11-19 07:36:53,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5694444444444444 [2023-11-19 07:36:53,152 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 574 transitions. [2023-11-19 07:36:53,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 574 transitions. [2023-11-19 07:36:53,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:53,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 574 transitions. [2023-11-19 07:36:53,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 95.66666666666667) internal successors, (574), 6 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:53,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 168.0) internal successors, (1176), 7 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:53,158 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 168.0) internal successors, (1176), 7 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:53,158 INFO L175 Difference]: Start difference. First operand has 76 places, 71 transitions, 346 flow. Second operand 6 states and 574 transitions. [2023-11-19 07:36:53,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 137 transitions, 798 flow [2023-11-19 07:36:53,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 137 transitions, 750 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-11-19 07:36:53,169 INFO L231 Difference]: Finished difference. Result has 81 places, 100 transitions, 548 flow [2023-11-19 07:36:53,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=548, PETRI_PLACES=81, PETRI_TRANSITIONS=100} [2023-11-19 07:36:53,173 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 40 predicate places. [2023-11-19 07:36:53,173 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 100 transitions, 548 flow [2023-11-19 07:36:53,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.0) internal successors, (498), 6 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:53,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:53,174 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:53,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:36:53,174 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:36:53,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:53,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1365840631, now seen corresponding path program 1 times [2023-11-19 07:36:53,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:53,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776128808] [2023-11-19 07:36:53,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:53,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:53,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:53,693 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-19 07:36:53,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:53,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776128808] [2023-11-19 07:36:53,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776128808] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:53,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:53,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:36:53,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972692621] [2023-11-19 07:36:53,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:53,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:36:53,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:53,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:36:53,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:36:53,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 168 [2023-11-19 07:36:53,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 100 transitions, 548 flow. Second operand has 6 states, 6 states have (on average 78.0) internal successors, (468), 6 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:53,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:53,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 168 [2023-11-19 07:36:53,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:54,218 INFO L124 PetriNetUnfolderBase]: 521/1095 cut-off events. [2023-11-19 07:36:54,218 INFO L125 PetriNetUnfolderBase]: For 739/750 co-relation queries the response was YES. [2023-11-19 07:36:54,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3237 conditions, 1095 events. 521/1095 cut-off events. For 739/750 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 5189 event pairs, 154 based on Foata normal form. 0/1023 useless extension candidates. Maximal degree in co-relation 3177. Up to 872 conditions per place. [2023-11-19 07:36:54,230 INFO L140 encePairwiseOnDemand]: 153/168 looper letters, 109 selfloop transitions, 57 changer transitions 4/175 dead transitions. [2023-11-19 07:36:54,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 175 transitions, 1172 flow [2023-11-19 07:36:54,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:36:54,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:36:54,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 552 transitions. [2023-11-19 07:36:54,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5476190476190477 [2023-11-19 07:36:54,234 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 552 transitions. [2023-11-19 07:36:54,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 552 transitions. [2023-11-19 07:36:54,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:54,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 552 transitions. [2023-11-19 07:36:54,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 92.0) internal successors, (552), 6 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:54,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 168.0) internal successors, (1176), 7 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:54,239 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 168.0) internal successors, (1176), 7 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:54,239 INFO L175 Difference]: Start difference. First operand has 81 places, 100 transitions, 548 flow. Second operand 6 states and 552 transitions. [2023-11-19 07:36:54,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 175 transitions, 1172 flow [2023-11-19 07:36:54,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 175 transitions, 1172 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:36:54,251 INFO L231 Difference]: Finished difference. Result has 91 places, 147 transitions, 1046 flow [2023-11-19 07:36:54,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1046, PETRI_PLACES=91, PETRI_TRANSITIONS=147} [2023-11-19 07:36:54,253 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 50 predicate places. [2023-11-19 07:36:54,253 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 147 transitions, 1046 flow [2023-11-19 07:36:54,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 78.0) internal successors, (468), 6 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:54,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:54,253 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:54,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:36:54,254 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:36:54,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:54,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1370921634, now seen corresponding path program 1 times [2023-11-19 07:36:54,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:54,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114934593] [2023-11-19 07:36:54,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:54,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:54,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:54,623 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-19 07:36:54,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:54,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114934593] [2023-11-19 07:36:54,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114934593] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:54,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:54,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:36:54,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125669241] [2023-11-19 07:36:54,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:54,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:36:54,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:54,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:36:54,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:36:54,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 168 [2023-11-19 07:36:54,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 147 transitions, 1046 flow. Second operand has 6 states, 6 states have (on average 78.0) internal successors, (468), 6 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:54,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:54,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 168 [2023-11-19 07:36:54,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:55,245 INFO L124 PetriNetUnfolderBase]: 638/1311 cut-off events. [2023-11-19 07:36:55,245 INFO L125 PetriNetUnfolderBase]: For 1805/1841 co-relation queries the response was YES. [2023-11-19 07:36:55,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4678 conditions, 1311 events. 638/1311 cut-off events. For 1805/1841 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 6455 event pairs, 172 based on Foata normal form. 0/1230 useless extension candidates. Maximal degree in co-relation 4613. Up to 1085 conditions per place. [2023-11-19 07:36:55,261 INFO L140 encePairwiseOnDemand]: 153/168 looper letters, 160 selfloop transitions, 71 changer transitions 4/238 dead transitions. [2023-11-19 07:36:55,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 238 transitions, 1990 flow [2023-11-19 07:36:55,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:36:55,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:36:55,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 557 transitions. [2023-11-19 07:36:55,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5525793650793651 [2023-11-19 07:36:55,264 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 557 transitions. [2023-11-19 07:36:55,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 557 transitions. [2023-11-19 07:36:55,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:55,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 557 transitions. [2023-11-19 07:36:55,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 92.83333333333333) internal successors, (557), 6 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:55,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 168.0) internal successors, (1176), 7 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:55,269 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 168.0) internal successors, (1176), 7 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:55,269 INFO L175 Difference]: Start difference. First operand has 91 places, 147 transitions, 1046 flow. Second operand 6 states and 557 transitions. [2023-11-19 07:36:55,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 238 transitions, 1990 flow [2023-11-19 07:36:55,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 238 transitions, 1926 flow, removed 32 selfloop flow, removed 0 redundant places. [2023-11-19 07:36:55,295 INFO L231 Difference]: Finished difference. Result has 101 places, 200 transitions, 1658 flow [2023-11-19 07:36:55,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=988, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1658, PETRI_PLACES=101, PETRI_TRANSITIONS=200} [2023-11-19 07:36:55,296 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 60 predicate places. [2023-11-19 07:36:55,296 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 200 transitions, 1658 flow [2023-11-19 07:36:55,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 78.0) internal successors, (468), 6 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:55,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:55,297 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:55,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:36:55,298 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:36:55,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:55,298 INFO L85 PathProgramCache]: Analyzing trace with hash 43649318, now seen corresponding path program 1 times [2023-11-19 07:36:55,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:55,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723197417] [2023-11-19 07:36:55,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:55,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:55,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:55,940 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-19 07:36:55,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:55,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723197417] [2023-11-19 07:36:55,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723197417] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:36:55,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062584783] [2023-11-19 07:36:55,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:55,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:55,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e9af38-28ea-4513-b857-37796031ee65/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:55,942 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e9af38-28ea-4513-b857-37796031ee65/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:36:55,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e9af38-28ea-4513-b857-37796031ee65/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:36:56,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:56,075 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-19 07:36:56,078 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:36:56,155 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 13 treesize of output 9 [2023-11-19 07:36:56,182 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-19 07:36:56,183 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:36:56,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062584783] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:56,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:36:56,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2023-11-19 07:36:56,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144134636] [2023-11-19 07:36:56,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:56,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:36:56,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:56,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:36:56,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:36:56,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 168 [2023-11-19 07:36:56,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 200 transitions, 1658 flow. Second operand has 6 states, 6 states have (on average 87.0) internal successors, (522), 6 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:56,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:56,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 168 [2023-11-19 07:36:56,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:56,983 INFO L124 PetriNetUnfolderBase]: 1029/2517 cut-off events. [2023-11-19 07:36:56,984 INFO L125 PetriNetUnfolderBase]: For 5565/5664 co-relation queries the response was YES. [2023-11-19 07:36:56,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9660 conditions, 2517 events. 1029/2517 cut-off events. For 5565/5664 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 16310 event pairs, 107 based on Foata normal form. 11/2454 useless extension candidates. Maximal degree in co-relation 9590. Up to 566 conditions per place. [2023-11-19 07:36:57,018 INFO L140 encePairwiseOnDemand]: 159/168 looper letters, 107 selfloop transitions, 12 changer transitions 0/267 dead transitions. [2023-11-19 07:36:57,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 267 transitions, 2414 flow [2023-11-19 07:36:57,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:36:57,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:36:57,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 568 transitions. [2023-11-19 07:36:57,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5634920634920635 [2023-11-19 07:36:57,021 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 568 transitions. [2023-11-19 07:36:57,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 568 transitions. [2023-11-19 07:36:57,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:57,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 568 transitions. [2023-11-19 07:36:57,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 94.66666666666667) internal successors, (568), 6 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:57,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 168.0) internal successors, (1176), 7 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:57,027 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 168.0) internal successors, (1176), 7 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:57,027 INFO L175 Difference]: Start difference. First operand has 101 places, 200 transitions, 1658 flow. Second operand 6 states and 568 transitions. [2023-11-19 07:36:57,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 267 transitions, 2414 flow [2023-11-19 07:36:57,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 267 transitions, 2332 flow, removed 41 selfloop flow, removed 0 redundant places. [2023-11-19 07:36:57,146 INFO L231 Difference]: Finished difference. Result has 109 places, 210 transitions, 1686 flow [2023-11-19 07:36:57,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=1576, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1686, PETRI_PLACES=109, PETRI_TRANSITIONS=210} [2023-11-19 07:36:57,147 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 68 predicate places. [2023-11-19 07:36:57,147 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 210 transitions, 1686 flow [2023-11-19 07:36:57,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 87.0) internal successors, (522), 6 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:57,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:57,148 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:57,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e9af38-28ea-4513-b857-37796031ee65/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:36:57,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e9af38-28ea-4513-b857-37796031ee65/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-19 07:36:57,363 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:36:57,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:57,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1577207632, now seen corresponding path program 2 times [2023-11-19 07:36:57,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:57,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971416752] [2023-11-19 07:36:57,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:57,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:57,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:58,196 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-19 07:36:58,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:58,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971416752] [2023-11-19 07:36:58,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971416752] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:36:58,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503397812] [2023-11-19 07:36:58,197 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:36:58,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:58,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e9af38-28ea-4513-b857-37796031ee65/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:58,198 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e9af38-28ea-4513-b857-37796031ee65/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:36:58,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e9af38-28ea-4513-b857-37796031ee65/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:36:58,322 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-19 07:36:58,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:36:58,325 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-19 07:36:58,327 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:36:58,380 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 13 treesize of output 9 [2023-11-19 07:36:58,427 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-19 07:36:58,427 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:36:58,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503397812] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:58,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:36:58,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2023-11-19 07:36:58,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373131841] [2023-11-19 07:36:58,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:58,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:36:58,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:58,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:36:58,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:36:58,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 168 [2023-11-19 07:36:58,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 210 transitions, 1686 flow. Second operand has 6 states, 6 states have (on average 87.0) internal successors, (522), 6 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:58,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:58,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 168 [2023-11-19 07:36:58,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:59,767 INFO L124 PetriNetUnfolderBase]: 1972/4703 cut-off events. [2023-11-19 07:36:59,767 INFO L125 PetriNetUnfolderBase]: For 10591/10765 co-relation queries the response was YES. [2023-11-19 07:36:59,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18958 conditions, 4703 events. 1972/4703 cut-off events. For 10591/10765 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 33350 event pairs, 202 based on Foata normal form. 14/4637 useless extension candidates. Maximal degree in co-relation 18883. Up to 1109 conditions per place. [2023-11-19 07:36:59,838 INFO L140 encePairwiseOnDemand]: 160/168 looper letters, 118 selfloop transitions, 19 changer transitions 1/286 dead transitions. [2023-11-19 07:36:59,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 286 transitions, 2622 flow [2023-11-19 07:36:59,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:36:59,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:36:59,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 564 transitions. [2023-11-19 07:36:59,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5595238095238095 [2023-11-19 07:36:59,841 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 564 transitions. [2023-11-19 07:36:59,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 564 transitions. [2023-11-19 07:36:59,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:59,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 564 transitions. [2023-11-19 07:36:59,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 94.0) internal successors, (564), 6 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:59,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 168.0) internal successors, (1176), 7 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:59,847 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 168.0) internal successors, (1176), 7 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:59,847 INFO L175 Difference]: Start difference. First operand has 109 places, 210 transitions, 1686 flow. Second operand 6 states and 564 transitions. [2023-11-19 07:36:59,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 286 transitions, 2622 flow [2023-11-19 07:36:59,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 286 transitions, 2621 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:36:59,970 INFO L231 Difference]: Finished difference. Result has 116 places, 222 transitions, 1858 flow [2023-11-19 07:36:59,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=1685, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1858, PETRI_PLACES=116, PETRI_TRANSITIONS=222} [2023-11-19 07:36:59,972 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 75 predicate places. [2023-11-19 07:36:59,972 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 222 transitions, 1858 flow [2023-11-19 07:36:59,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 87.0) internal successors, (522), 6 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:59,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:59,973 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:59,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e9af38-28ea-4513-b857-37796031ee65/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:00,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e9af38-28ea-4513-b857-37796031ee65/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-19 07:37:00,188 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:37:00,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:00,189 INFO L85 PathProgramCache]: Analyzing trace with hash 567744058, now seen corresponding path program 3 times [2023-11-19 07:37:00,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:00,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945734221] [2023-11-19 07:37:00,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:00,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:00,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:00,877 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-19 07:37:00,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:00,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945734221] [2023-11-19 07:37:00,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945734221] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:37:00,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022392867] [2023-11-19 07:37:00,878 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 07:37:00,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:00,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e9af38-28ea-4513-b857-37796031ee65/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:00,880 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e9af38-28ea-4513-b857-37796031ee65/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:37:00,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e9af38-28ea-4513-b857-37796031ee65/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:37:01,007 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-19 07:37:01,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:37:01,009 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-19 07:37:01,012 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:01,056 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 13 treesize of output 9 [2023-11-19 07:37:01,101 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-19 07:37:01,101 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:37:01,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022392867] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:01,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:37:01,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2023-11-19 07:37:01,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396540844] [2023-11-19 07:37:01,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:01,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:37:01,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:01,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:37:01,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:37:01,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 168 [2023-11-19 07:37:01,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 222 transitions, 1858 flow. Second operand has 6 states, 6 states have (on average 87.0) internal successors, (522), 6 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:01,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:37:01,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 168 [2023-11-19 07:37:01,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:37:02,472 INFO L124 PetriNetUnfolderBase]: 1978/4716 cut-off events. [2023-11-19 07:37:02,472 INFO L125 PetriNetUnfolderBase]: For 12633/12831 co-relation queries the response was YES. [2023-11-19 07:37:02,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19918 conditions, 4716 events. 1978/4716 cut-off events. For 12633/12831 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 34314 event pairs, 190 based on Foata normal form. 6/4638 useless extension candidates. Maximal degree in co-relation 19839. Up to 1182 conditions per place. [2023-11-19 07:37:02,556 INFO L140 encePairwiseOnDemand]: 161/168 looper letters, 121 selfloop transitions, 18 changer transitions 1/288 dead transitions. [2023-11-19 07:37:02,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 288 transitions, 2719 flow [2023-11-19 07:37:02,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:37:02,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:37:02,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 563 transitions. [2023-11-19 07:37:02,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.558531746031746 [2023-11-19 07:37:02,559 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 563 transitions. [2023-11-19 07:37:02,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 563 transitions. [2023-11-19 07:37:02,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:02,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 563 transitions. [2023-11-19 07:37:02,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 93.83333333333333) internal successors, (563), 6 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:02,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 168.0) internal successors, (1176), 7 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:02,567 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 168.0) internal successors, (1176), 7 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:02,568 INFO L175 Difference]: Start difference. First operand has 116 places, 222 transitions, 1858 flow. Second operand 6 states and 563 transitions. [2023-11-19 07:37:02,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 288 transitions, 2719 flow [2023-11-19 07:37:02,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 288 transitions, 2716 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-19 07:37:02,646 INFO L231 Difference]: Finished difference. Result has 123 places, 227 transitions, 1969 flow [2023-11-19 07:37:02,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=1820, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1969, PETRI_PLACES=123, PETRI_TRANSITIONS=227} [2023-11-19 07:37:02,647 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 82 predicate places. [2023-11-19 07:37:02,647 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 227 transitions, 1969 flow [2023-11-19 07:37:02,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 87.0) internal successors, (522), 6 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:02,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:02,648 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:02,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e9af38-28ea-4513-b857-37796031ee65/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:02,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e9af38-28ea-4513-b857-37796031ee65/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 07:37:02,870 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:37:02,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:02,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1110649018, now seen corresponding path program 4 times [2023-11-19 07:37:02,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:02,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102146421] [2023-11-19 07:37:02,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:02,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:02,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:03,569 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-19 07:37:03,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:03,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102146421] [2023-11-19 07:37:03,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102146421] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:37:03,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526275110] [2023-11-19 07:37:03,570 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-19 07:37:03,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:03,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e9af38-28ea-4513-b857-37796031ee65/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:03,572 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e9af38-28ea-4513-b857-37796031ee65/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:37:03,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e9af38-28ea-4513-b857-37796031ee65/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:37:03,741 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-19 07:37:03,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:37:03,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-19 07:37:03,746 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:03,823 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 13 treesize of output 9 [2023-11-19 07:37:03,858 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-19 07:37:03,859 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:37:03,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526275110] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:03,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:37:03,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2023-11-19 07:37:03,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505473988] [2023-11-19 07:37:03,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:03,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:37:03,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:03,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:37:03,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:37:03,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 168 [2023-11-19 07:37:03,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 227 transitions, 1969 flow. Second operand has 6 states, 6 states have (on average 87.0) internal successors, (522), 6 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:03,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:37:03,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 168 [2023-11-19 07:37:03,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:37:04,956 INFO L124 PetriNetUnfolderBase]: 1679/4057 cut-off events. [2023-11-19 07:37:04,957 INFO L125 PetriNetUnfolderBase]: For 12115/12288 co-relation queries the response was YES. [2023-11-19 07:37:04,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17480 conditions, 4057 events. 1679/4057 cut-off events. For 12115/12288 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 28956 event pairs, 232 based on Foata normal form. 14/3978 useless extension candidates. Maximal degree in co-relation 17397. Up to 1144 conditions per place. [2023-11-19 07:37:05,007 INFO L140 encePairwiseOnDemand]: 161/168 looper letters, 108 selfloop transitions, 16 changer transitions 0/272 dead transitions. [2023-11-19 07:37:05,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 272 transitions, 2582 flow [2023-11-19 07:37:05,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:37:05,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:37:05,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 563 transitions. [2023-11-19 07:37:05,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.558531746031746 [2023-11-19 07:37:05,010 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 563 transitions. [2023-11-19 07:37:05,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 563 transitions. [2023-11-19 07:37:05,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:05,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 563 transitions. [2023-11-19 07:37:05,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 93.83333333333333) internal successors, (563), 6 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:05,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 168.0) internal successors, (1176), 7 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:05,016 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 168.0) internal successors, (1176), 7 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:05,016 INFO L175 Difference]: Start difference. First operand has 123 places, 227 transitions, 1969 flow. Second operand 6 states and 563 transitions. [2023-11-19 07:37:05,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 272 transitions, 2582 flow [2023-11-19 07:37:05,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 272 transitions, 2552 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-11-19 07:37:05,084 INFO L231 Difference]: Finished difference. Result has 129 places, 228 transitions, 2006 flow [2023-11-19 07:37:05,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=1889, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2006, PETRI_PLACES=129, PETRI_TRANSITIONS=228} [2023-11-19 07:37:05,085 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 88 predicate places. [2023-11-19 07:37:05,085 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 228 transitions, 2006 flow [2023-11-19 07:37:05,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 87.0) internal successors, (522), 6 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:05,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:05,086 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:05,106 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e9af38-28ea-4513-b857-37796031ee65/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-19 07:37:05,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e9af38-28ea-4513-b857-37796031ee65/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-19 07:37:05,300 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:37:05,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:05,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1214834577, now seen corresponding path program 1 times [2023-11-19 07:37:05,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:05,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951707778] [2023-11-19 07:37:05,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:05,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:05,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:06,277 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-19 07:37:06,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:06,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951707778] [2023-11-19 07:37:06,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951707778] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:37:06,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107431439] [2023-11-19 07:37:06,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:06,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:06,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e9af38-28ea-4513-b857-37796031ee65/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:06,280 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e9af38-28ea-4513-b857-37796031ee65/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:37:06,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e9af38-28ea-4513-b857-37796031ee65/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 07:37:06,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:06,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-19 07:37:06,463 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:06,742 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 [2023-11-19 07:37:06,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 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 [2023-11-19 07:37:06,844 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2023-11-19 07:37:06,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2023-11-19 07:37:06,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:06,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:06,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:06,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:06,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 47 [2023-11-19 07:37:07,038 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-19 07:37:07,039 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:37:08,387 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-19 07:37:08,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107431439] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:37:08,388 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:37:08,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2023-11-19 07:37:08,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21141186] [2023-11-19 07:37:08,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:37:08,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-19 07:37:08,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:08,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-19 07:37:08,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=770, Unknown=0, NotChecked=0, Total=930 [2023-11-19 07:37:15,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 168 [2023-11-19 07:37:15,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 228 transitions, 2006 flow. Second operand has 31 states, 31 states have (on average 69.54838709677419) internal successors, (2156), 31 states have internal predecessors, (2156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:15,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:37:15,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 168 [2023-11-19 07:37:15,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:37:20,091 INFO L124 PetriNetUnfolderBase]: 2602/5700 cut-off events. [2023-11-19 07:37:20,091 INFO L125 PetriNetUnfolderBase]: For 18003/18148 co-relation queries the response was YES. [2023-11-19 07:37:20,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26805 conditions, 5700 events. 2602/5700 cut-off events. For 18003/18148 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 40062 event pairs, 260 based on Foata normal form. 33/5666 useless extension candidates. Maximal degree in co-relation 26719. Up to 2077 conditions per place. [2023-11-19 07:37:20,183 INFO L140 encePairwiseOnDemand]: 150/168 looper letters, 517 selfloop transitions, 140 changer transitions 4/690 dead transitions. [2023-11-19 07:37:20,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 690 transitions, 7174 flow [2023-11-19 07:37:20,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-19 07:37:20,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-19 07:37:20,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1410 transitions. [2023-11-19 07:37:20,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4662698412698413 [2023-11-19 07:37:20,190 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1410 transitions. [2023-11-19 07:37:20,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1410 transitions. [2023-11-19 07:37:20,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:20,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1410 transitions. [2023-11-19 07:37:20,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 78.33333333333333) internal successors, (1410), 18 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:20,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 168.0) internal successors, (3192), 19 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:20,206 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 168.0) internal successors, (3192), 19 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:20,206 INFO L175 Difference]: Start difference. First operand has 129 places, 228 transitions, 2006 flow. Second operand 18 states and 1410 transitions. [2023-11-19 07:37:20,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 690 transitions, 7174 flow [2023-11-19 07:37:20,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 690 transitions, 7140 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-11-19 07:37:20,307 INFO L231 Difference]: Finished difference. Result has 157 places, 345 transitions, 3868 flow [2023-11-19 07:37:20,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=1982, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3868, PETRI_PLACES=157, PETRI_TRANSITIONS=345} [2023-11-19 07:37:20,309 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 116 predicate places. [2023-11-19 07:37:20,310 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 345 transitions, 3868 flow [2023-11-19 07:37:20,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 69.54838709677419) internal successors, (2156), 31 states have internal predecessors, (2156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:20,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:20,311 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 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] [2023-11-19 07:37:20,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e9af38-28ea-4513-b857-37796031ee65/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:20,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e9af38-28ea-4513-b857-37796031ee65/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:20,524 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:37:20,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:20,524 INFO L85 PathProgramCache]: Analyzing trace with hash 250078442, now seen corresponding path program 1 times [2023-11-19 07:37:20,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:20,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264434099] [2023-11-19 07:37:20,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:20,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:20,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:22,177 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-19 07:37:22,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:22,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264434099] [2023-11-19 07:37:22,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264434099] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:37:22,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256702695] [2023-11-19 07:37:22,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:22,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:22,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e9af38-28ea-4513-b857-37796031ee65/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:22,179 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e9af38-28ea-4513-b857-37796031ee65/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:37:22,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e9af38-28ea-4513-b857-37796031ee65/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 07:37:22,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:22,355 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-19 07:37:22,367 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:22,544 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 [2023-11-19 07:37:22,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 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 [2023-11-19 07:37:22,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2023-11-19 07:37:22,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2023-11-19 07:37:22,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:22,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:22,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:22,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:22,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2023-11-19 07:37:23,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:23,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:23,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:23,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:23,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:23,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:23,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:23,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:23,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 57 [2023-11-19 07:37:23,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:23,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:23,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:23,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:23,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:23,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:23,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:23,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:23,147 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 57 [2023-11-19 07:37:23,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:23,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:23,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:23,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:23,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:23,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:23,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:23,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:23,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 57 [2023-11-19 07:37:23,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:23,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:23,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:23,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:23,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:23,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:23,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:23,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:23,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 62 [2023-11-19 07:37:31,470 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-19 07:37:31,471 INFO L327 TraceCheckSpWp]: Computing backward predicates...