./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread/indexer.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc198e68-b602-48c6-a6cc-72907ee97424/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc198e68-b602-48c6-a6cc-72907ee97424/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_cc198e68-b602-48c6-a6cc-72907ee97424/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc198e68-b602-48c6-a6cc-72907ee97424/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/indexer.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc198e68-b602-48c6-a6cc-72907ee97424/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_cc198e68-b602-48c6-a6cc-72907ee97424/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 f24afaadf07ead7c7da85cf6020fd6a6a5b5585e439441b5111a2dea2e7cec4c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:44:38,946 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:44:39,105 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc198e68-b602-48c6-a6cc-72907ee97424/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-19 07:44:39,117 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:44:39,120 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:44:39,168 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:44:39,170 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:44:39,171 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:44:39,172 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:44:39,178 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:44:39,180 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:44:39,181 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:44:39,181 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:44:39,183 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:44:39,184 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:44:39,184 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:44:39,185 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:44:39,185 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:44:39,186 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:44:39,186 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:44:39,187 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:44:39,187 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:44:39,188 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-19 07:44:39,188 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:44:39,189 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:44:39,189 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:44:39,190 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:44:39,191 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:44:39,191 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:44:39,192 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:44:39,193 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:44:39,193 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:44:39,194 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:44:39,194 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:44:39,194 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:44:39,195 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:44:39,195 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:44:39,195 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:44:39,196 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:44:39,196 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:44:39,196 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:44:39,197 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_cc198e68-b602-48c6-a6cc-72907ee97424/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc198e68-b602-48c6-a6cc-72907ee97424/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f24afaadf07ead7c7da85cf6020fd6a6a5b5585e439441b5111a2dea2e7cec4c [2023-11-19 07:44:39,560 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:44:39,588 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:44:39,592 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:44:39,594 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:44:39,595 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:44:39,597 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc198e68-b602-48c6-a6cc-72907ee97424/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread/indexer.i [2023-11-19 07:44:43,222 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:44:43,760 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:44:43,764 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc198e68-b602-48c6-a6cc-72907ee97424/sv-benchmarks/c/pthread/indexer.i [2023-11-19 07:44:43,792 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc198e68-b602-48c6-a6cc-72907ee97424/bin/uautomizer-verify-uCwYo4JHxu/data/66f83bd2f/083d13845cfd41a18f3e0f578f438b82/FLAGdbc54a62a [2023-11-19 07:44:43,818 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc198e68-b602-48c6-a6cc-72907ee97424/bin/uautomizer-verify-uCwYo4JHxu/data/66f83bd2f/083d13845cfd41a18f3e0f578f438b82 [2023-11-19 07:44:43,827 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:44:43,829 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:44:43,833 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:44:43,833 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:44:43,840 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:44:43,841 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:44:43" (1/1) ... [2023-11-19 07:44:43,843 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a844f35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:43, skipping insertion in model container [2023-11-19 07:44:43,843 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:44:43" (1/1) ... [2023-11-19 07:44:43,923 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:44:44,449 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:44:44,504 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:44:44,569 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:44:44,639 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:44:44,639 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:44 WrapperNode [2023-11-19 07:44:44,639 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:44:44,641 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:44:44,642 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:44:44,642 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:44:44,648 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:44" (1/1) ... [2023-11-19 07:44:44,674 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:44" (1/1) ... [2023-11-19 07:44:44,713 INFO L138 Inliner]: procedures = 269, calls = 21, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 145 [2023-11-19 07:44:44,714 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:44:44,715 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:44:44,715 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:44:44,715 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:44:44,732 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:44" (1/1) ... [2023-11-19 07:44:44,732 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:44" (1/1) ... [2023-11-19 07:44:44,740 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:44" (1/1) ... [2023-11-19 07:44:44,740 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:44" (1/1) ... [2023-11-19 07:44:44,756 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:44" (1/1) ... [2023-11-19 07:44:44,763 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:44" (1/1) ... [2023-11-19 07:44:44,767 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:44" (1/1) ... [2023-11-19 07:44:44,769 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:44" (1/1) ... [2023-11-19 07:44:44,784 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:44:44,787 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:44:44,787 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:44:44,787 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:44:44,788 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:44" (1/1) ... [2023-11-19 07:44:44,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:44:44,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc198e68-b602-48c6-a6cc-72907ee97424/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:44:44,839 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc198e68-b602-48c6-a6cc-72907ee97424/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:44:44,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc198e68-b602-48c6-a6cc-72907ee97424/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:44:44,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:44:44,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:44:44,898 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:44:44,898 INFO L130 BoogieDeclarations]: Found specification of procedure thread_routine [2023-11-19 07:44:44,899 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_routine [2023-11-19 07:44:44,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:44:44,899 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 07:44:44,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:44:44,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:44:44,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:44:44,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:44:44,902 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 07:44:45,133 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:44:45,136 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:44:45,645 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:44:45,661 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:44:45,661 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-19 07:44:45,666 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:44:45 BoogieIcfgContainer [2023-11-19 07:44:45,666 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:44:45,669 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:44:45,670 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:44:45,674 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:44:45,674 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:44:43" (1/3) ... [2023-11-19 07:44:45,675 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46ee9f43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:44:45, skipping insertion in model container [2023-11-19 07:44:45,675 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:44" (2/3) ... [2023-11-19 07:44:45,676 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46ee9f43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:44:45, skipping insertion in model container [2023-11-19 07:44:45,676 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:44:45" (3/3) ... [2023-11-19 07:44:45,678 INFO L112 eAbstractionObserver]: Analyzing ICFG indexer.i [2023-11-19 07:44:45,688 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:44:45,701 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:44:45,702 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2023-11-19 07:44:45,702 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:44:45,890 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-19 07:44:45,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 156 transitions, 319 flow [2023-11-19 07:44:46,037 INFO L124 PetriNetUnfolderBase]: 19/194 cut-off events. [2023-11-19 07:44:46,038 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:44:46,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 194 events. 19/194 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 354 event pairs, 0 based on Foata normal form. 0/165 useless extension candidates. Maximal degree in co-relation 121. Up to 4 conditions per place. [2023-11-19 07:44:46,047 INFO L82 GeneralOperation]: Start removeDead. Operand has 144 places, 156 transitions, 319 flow [2023-11-19 07:44:46,060 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 144 places, 156 transitions, 319 flow [2023-11-19 07:44:46,071 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:44:46,091 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 144 places, 156 transitions, 319 flow [2023-11-19 07:44:46,094 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 144 places, 156 transitions, 319 flow [2023-11-19 07:44:46,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 156 transitions, 319 flow [2023-11-19 07:44:46,157 INFO L124 PetriNetUnfolderBase]: 19/194 cut-off events. [2023-11-19 07:44:46,157 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:44:46,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 194 events. 19/194 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 354 event pairs, 0 based on Foata normal form. 0/165 useless extension candidates. Maximal degree in co-relation 121. Up to 4 conditions per place. [2023-11-19 07:44:46,169 INFO L119 LiptonReduction]: Number of co-enabled transitions 6864 [2023-11-19 07:44:51,012 INFO L134 LiptonReduction]: Checked pairs total: 16745 [2023-11-19 07:44:51,012 INFO L136 LiptonReduction]: Total number of compositions: 119 [2023-11-19 07:44:51,054 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:44:51,063 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;@f17b72c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:44:51,063 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-11-19 07:44:51,071 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:44:51,071 INFO L124 PetriNetUnfolderBase]: 2/16 cut-off events. [2023-11-19 07:44:51,071 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:44:51,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:51,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:44:51,073 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread_routineErr0ASSERT_VIOLATIONDATA_RACE, thread_routineErr1ASSERT_VIOLATIONDATA_RACE, thread_routineErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-19 07:44:51,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:51,090 INFO L85 PathProgramCache]: Analyzing trace with hash 232517987, now seen corresponding path program 1 times [2023-11-19 07:44:51,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:51,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946051806] [2023-11-19 07:44:51,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:51,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:51,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:51,450 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 07:44:51,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:44:51,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946051806] [2023-11-19 07:44:51,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946051806] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:44:51,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:44:51,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:44:51,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777360466] [2023-11-19 07:44:51,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:44:51,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:44:51,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:51,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:44:51,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:44:51,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 275 [2023-11-19 07:44:51,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 54 transitions, 115 flow. Second operand has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 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 07:44:51,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:44:51,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 275 [2023-11-19 07:44:51,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:44:51,793 INFO L124 PetriNetUnfolderBase]: 89/307 cut-off events. [2023-11-19 07:44:51,793 INFO L125 PetriNetUnfolderBase]: For 6/9 co-relation queries the response was YES. [2023-11-19 07:44:51,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 495 conditions, 307 events. 89/307 cut-off events. For 6/9 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1305 event pairs, 41 based on Foata normal form. 0/260 useless extension candidates. Maximal degree in co-relation 444. Up to 118 conditions per place. [2023-11-19 07:44:51,799 INFO L140 encePairwiseOnDemand]: 265/275 looper letters, 37 selfloop transitions, 6 changer transitions 4/72 dead transitions. [2023-11-19 07:44:51,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 72 transitions, 245 flow [2023-11-19 07:44:51,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:44:51,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:44:51,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 440 transitions. [2023-11-19 07:44:51,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2023-11-19 07:44:51,823 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 440 transitions. [2023-11-19 07:44:51,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 440 transitions. [2023-11-19 07:44:51,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:44:51,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 440 transitions. [2023-11-19 07:44:51,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 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 07:44:51,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 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 07:44:51,845 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 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 07:44:51,848 INFO L175 Difference]: Start difference. First operand has 50 places, 54 transitions, 115 flow. Second operand 3 states and 440 transitions. [2023-11-19 07:44:51,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 72 transitions, 245 flow [2023-11-19 07:44:51,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 72 transitions, 245 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:44:51,856 INFO L231 Difference]: Finished difference. Result has 53 places, 51 transitions, 129 flow [2023-11-19 07:44:51,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=53, PETRI_TRANSITIONS=51} [2023-11-19 07:44:51,864 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 3 predicate places. [2023-11-19 07:44:51,864 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 51 transitions, 129 flow [2023-11-19 07:44:51,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 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 07:44:51,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:51,866 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:44:51,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:44:51,866 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread_routineErr0ASSERT_VIOLATIONDATA_RACE, thread_routineErr1ASSERT_VIOLATIONDATA_RACE, thread_routineErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-19 07:44:51,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:51,867 INFO L85 PathProgramCache]: Analyzing trace with hash 61958588, now seen corresponding path program 1 times [2023-11-19 07:44:51,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:51,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149278288] [2023-11-19 07:44:51,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:51,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:51,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:52,002 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 07:44:52,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:44:52,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149278288] [2023-11-19 07:44:52,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149278288] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:44:52,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155980380] [2023-11-19 07:44:52,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:52,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:44:52,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc198e68-b602-48c6-a6cc-72907ee97424/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:44:52,007 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc198e68-b602-48c6-a6cc-72907ee97424/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:44:52,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc198e68-b602-48c6-a6cc-72907ee97424/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:44:52,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:52,118 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:44:52,124 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:44:52,173 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 07:44:52,173 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:44:52,195 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 07:44:52,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155980380] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:44:52,196 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:44:52,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-19 07:44:52,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331792236] [2023-11-19 07:44:52,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:44:52,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:44:52,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:52,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:44:52,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:44:52,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 275 [2023-11-19 07:44:52,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 51 transitions, 129 flow. Second operand has 7 states, 7 states have (on average 126.42857142857143) internal successors, (885), 7 states have internal predecessors, (885), 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 07:44:52,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:44:52,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 275 [2023-11-19 07:44:52,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:44:52,521 INFO L124 PetriNetUnfolderBase]: 64/202 cut-off events. [2023-11-19 07:44:52,522 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-19 07:44:52,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 371 conditions, 202 events. 64/202 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 737 event pairs, 0 based on Foata normal form. 13/191 useless extension candidates. Maximal degree in co-relation 318. Up to 111 conditions per place. [2023-11-19 07:44:52,525 INFO L140 encePairwiseOnDemand]: 270/275 looper letters, 34 selfloop transitions, 7 changer transitions 0/60 dead transitions. [2023-11-19 07:44:52,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 60 transitions, 226 flow [2023-11-19 07:44:52,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:44:52,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:44:52,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 795 transitions. [2023-11-19 07:44:52,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4818181818181818 [2023-11-19 07:44:52,532 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 795 transitions. [2023-11-19 07:44:52,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 795 transitions. [2023-11-19 07:44:52,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:44:52,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 795 transitions. [2023-11-19 07:44:52,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 132.5) internal successors, (795), 6 states have internal predecessors, (795), 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 07:44:52,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 275.0) internal successors, (1925), 7 states have internal predecessors, (1925), 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 07:44:52,546 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 275.0) internal successors, (1925), 7 states have internal predecessors, (1925), 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 07:44:52,546 INFO L175 Difference]: Start difference. First operand has 53 places, 51 transitions, 129 flow. Second operand 6 states and 795 transitions. [2023-11-19 07:44:52,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 60 transitions, 226 flow [2023-11-19 07:44:52,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 60 transitions, 222 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:44:52,550 INFO L231 Difference]: Finished difference. Result has 46 places, 44 transitions, 124 flow [2023-11-19 07:44:52,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=124, PETRI_PLACES=46, PETRI_TRANSITIONS=44} [2023-11-19 07:44:52,551 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -4 predicate places. [2023-11-19 07:44:52,552 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 44 transitions, 124 flow [2023-11-19 07:44:52,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 126.42857142857143) internal successors, (885), 7 states have internal predecessors, (885), 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 07:44:52,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:52,553 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:44:52,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc198e68-b602-48c6-a6cc-72907ee97424/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:44:52,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc198e68-b602-48c6-a6cc-72907ee97424/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:44:52,779 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread_routineErr0ASSERT_VIOLATIONDATA_RACE, thread_routineErr1ASSERT_VIOLATIONDATA_RACE, thread_routineErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-19 07:44:52,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:52,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1817985117, now seen corresponding path program 2 times [2023-11-19 07:44:52,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:52,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590016227] [2023-11-19 07:44:52,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:52,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:52,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:53,079 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 07:44:53,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:44:53,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590016227] [2023-11-19 07:44:53,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590016227] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:44:53,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144307716] [2023-11-19 07:44:53,081 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:44:53,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:44:53,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc198e68-b602-48c6-a6cc-72907ee97424/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:44:53,083 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc198e68-b602-48c6-a6cc-72907ee97424/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:44:53,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc198e68-b602-48c6-a6cc-72907ee97424/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:44:53,193 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-19 07:44:53,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:44:53,195 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-19 07:44:53,197 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:44:53,282 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 07:44:53,325 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 19 treesize of output 18 [2023-11-19 07:44:53,391 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:44:53,391 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 1 case distinctions, treesize of input 26 treesize of output 28 [2023-11-19 07:44:53,495 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:44:53,496 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 3 case distinctions, treesize of input 33 treesize of output 38 [2023-11-19 07:44:53,549 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 07:44:53,549 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:44:53,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144307716] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:44:53,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:44:53,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2023-11-19 07:44:53,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723564632] [2023-11-19 07:44:53,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:44:53,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:44:53,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:53,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:44:53,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:44:53,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 275 [2023-11-19 07:44:53,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 124 flow. Second operand has 7 states, 7 states have (on average 117.28571428571429) internal successors, (821), 7 states have internal predecessors, (821), 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 07:44:53,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:44:53,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 275 [2023-11-19 07:44:53,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:44:54,293 INFO L124 PetriNetUnfolderBase]: 293/619 cut-off events. [2023-11-19 07:44:54,293 INFO L125 PetriNetUnfolderBase]: For 61/61 co-relation queries the response was YES. [2023-11-19 07:44:54,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1272 conditions, 619 events. 293/619 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2446 event pairs, 87 based on Foata normal form. 0/557 useless extension candidates. Maximal degree in co-relation 1219. Up to 458 conditions per place. [2023-11-19 07:44:54,300 INFO L140 encePairwiseOnDemand]: 256/275 looper letters, 82 selfloop transitions, 54 changer transitions 0/140 dead transitions. [2023-11-19 07:44:54,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 140 transitions, 588 flow [2023-11-19 07:44:54,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:44:54,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:44:54,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 945 transitions. [2023-11-19 07:44:54,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4909090909090909 [2023-11-19 07:44:54,306 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 945 transitions. [2023-11-19 07:44:54,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 945 transitions. [2023-11-19 07:44:54,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:44:54,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 945 transitions. [2023-11-19 07:44:54,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 135.0) internal successors, (945), 7 states have internal predecessors, (945), 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 07:44:54,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 275.0) internal successors, (2200), 8 states have internal predecessors, (2200), 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 07:44:54,320 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 275.0) internal successors, (2200), 8 states have internal predecessors, (2200), 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 07:44:54,320 INFO L175 Difference]: Start difference. First operand has 46 places, 44 transitions, 124 flow. Second operand 7 states and 945 transitions. [2023-11-19 07:44:54,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 140 transitions, 588 flow [2023-11-19 07:44:54,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 140 transitions, 568 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-11-19 07:44:54,326 INFO L231 Difference]: Finished difference. Result has 54 places, 96 transitions, 406 flow [2023-11-19 07:44:54,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=406, PETRI_PLACES=54, PETRI_TRANSITIONS=96} [2023-11-19 07:44:54,328 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 4 predicate places. [2023-11-19 07:44:54,328 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 96 transitions, 406 flow [2023-11-19 07:44:54,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 117.28571428571429) internal successors, (821), 7 states have internal predecessors, (821), 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 07:44:54,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:54,330 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:44:54,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc198e68-b602-48c6-a6cc-72907ee97424/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:44:54,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc198e68-b602-48c6-a6cc-72907ee97424/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:44:54,547 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread_routineErr0ASSERT_VIOLATIONDATA_RACE === [thread_routineErr0ASSERT_VIOLATIONDATA_RACE, thread_routineErr1ASSERT_VIOLATIONDATA_RACE, thread_routineErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-19 07:44:54,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:54,548 INFO L85 PathProgramCache]: Analyzing trace with hash -553354503, now seen corresponding path program 1 times [2023-11-19 07:44:54,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:54,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717667364] [2023-11-19 07:44:54,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:54,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:54,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:54,764 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 07:44:54,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:44:54,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717667364] [2023-11-19 07:44:54,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717667364] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:44:54,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303717338] [2023-11-19 07:44:54,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:54,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:44:54,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc198e68-b602-48c6-a6cc-72907ee97424/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:44:54,779 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc198e68-b602-48c6-a6cc-72907ee97424/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:44:54,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc198e68-b602-48c6-a6cc-72907ee97424/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:44:54,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:54,938 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:44:54,940 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:44:54,971 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 07:44:54,971 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:44:55,043 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 07:44:55,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303717338] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:44:55,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:44:55,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-19 07:44:55,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480288889] [2023-11-19 07:44:55,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:44:55,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 07:44:55,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:55,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 07:44:55,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:44:55,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 275 [2023-11-19 07:44:55,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 96 transitions, 406 flow. Second operand has 13 states, 13 states have (on average 126.53846153846153) internal successors, (1645), 13 states have internal predecessors, (1645), 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 07:44:55,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:44:55,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 275 [2023-11-19 07:44:55,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:44:55,657 INFO L124 PetriNetUnfolderBase]: 185/476 cut-off events. [2023-11-19 07:44:55,657 INFO L125 PetriNetUnfolderBase]: For 87/109 co-relation queries the response was YES. [2023-11-19 07:44:55,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1169 conditions, 476 events. 185/476 cut-off events. For 87/109 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2036 event pairs, 11 based on Foata normal form. 8/444 useless extension candidates. Maximal degree in co-relation 1088. Up to 199 conditions per place. [2023-11-19 07:44:55,664 INFO L140 encePairwiseOnDemand]: 271/275 looper letters, 39 selfloop transitions, 13 changer transitions 0/118 dead transitions. [2023-11-19 07:44:55,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 118 transitions, 574 flow [2023-11-19 07:44:55,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:44:55,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-19 07:44:55,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1553 transitions. [2023-11-19 07:44:55,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4706060606060606 [2023-11-19 07:44:55,681 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1553 transitions. [2023-11-19 07:44:55,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1553 transitions. [2023-11-19 07:44:55,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:44:55,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1553 transitions. [2023-11-19 07:44:55,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 129.41666666666666) internal successors, (1553), 12 states have internal predecessors, (1553), 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 07:44:55,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 275.0) internal successors, (3575), 13 states have internal predecessors, (3575), 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 07:44:55,703 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 275.0) internal successors, (3575), 13 states have internal predecessors, (3575), 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 07:44:55,704 INFO L175 Difference]: Start difference. First operand has 54 places, 96 transitions, 406 flow. Second operand 12 states and 1553 transitions. [2023-11-19 07:44:55,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 118 transitions, 574 flow [2023-11-19 07:44:55,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 118 transitions, 573 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:44:55,717 INFO L231 Difference]: Finished difference. Result has 64 places, 102 transitions, 457 flow [2023-11-19 07:44:55,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=457, PETRI_PLACES=64, PETRI_TRANSITIONS=102} [2023-11-19 07:44:55,720 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 14 predicate places. [2023-11-19 07:44:55,720 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 102 transitions, 457 flow [2023-11-19 07:44:55,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 126.53846153846153) internal successors, (1645), 13 states have internal predecessors, (1645), 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 07:44:55,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:55,722 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:44:55,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc198e68-b602-48c6-a6cc-72907ee97424/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:44:55,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc198e68-b602-48c6-a6cc-72907ee97424/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:44:55,939 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread_routineErr0ASSERT_VIOLATIONDATA_RACE === [thread_routineErr0ASSERT_VIOLATIONDATA_RACE, thread_routineErr1ASSERT_VIOLATIONDATA_RACE, thread_routineErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-19 07:44:55,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:55,939 INFO L85 PathProgramCache]: Analyzing trace with hash -524438439, now seen corresponding path program 2 times [2023-11-19 07:44:55,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:55,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271622914] [2023-11-19 07:44:55,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:55,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:56,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:56,440 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:44:56,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:44:56,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271622914] [2023-11-19 07:44:56,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271622914] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:44:56,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536821681] [2023-11-19 07:44:56,441 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:44:56,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:44:56,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc198e68-b602-48c6-a6cc-72907ee97424/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:44:56,443 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc198e68-b602-48c6-a6cc-72907ee97424/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:44:56,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc198e68-b602-48c6-a6cc-72907ee97424/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:44:56,582 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-19 07:44:56,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:44:56,584 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-19 07:44:56,589 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:44:56,605 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 07:44:56,633 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 07:44:56,669 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:44:56,670 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 07:44:56,717 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:44:56,718 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 07:44:56,758 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 07:44:56,759 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:44:56,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536821681] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:44:56,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:44:56,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 17 [2023-11-19 07:44:56,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583124709] [2023-11-19 07:44:56,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:44:56,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:44:56,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:56,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:44:56,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2023-11-19 07:44:57,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 275 [2023-11-19 07:44:57,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 102 transitions, 457 flow. Second operand has 6 states, 6 states have (on average 131.83333333333334) internal successors, (791), 6 states have internal predecessors, (791), 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 07:44:57,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:44:57,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 275 [2023-11-19 07:44:57,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:44:57,396 INFO L124 PetriNetUnfolderBase]: 388/875 cut-off events. [2023-11-19 07:44:57,396 INFO L125 PetriNetUnfolderBase]: For 300/311 co-relation queries the response was YES. [2023-11-19 07:44:57,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2345 conditions, 875 events. 388/875 cut-off events. For 300/311 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 4158 event pairs, 46 based on Foata normal form. 0/786 useless extension candidates. Maximal degree in co-relation 2245. Up to 547 conditions per place. [2023-11-19 07:44:57,406 INFO L140 encePairwiseOnDemand]: 264/275 looper letters, 98 selfloop transitions, 29 changer transitions 0/151 dead transitions. [2023-11-19 07:44:57,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 151 transitions, 892 flow [2023-11-19 07:44:57,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:44:57,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:44:57,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 852 transitions. [2023-11-19 07:44:57,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5163636363636364 [2023-11-19 07:44:57,412 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 852 transitions. [2023-11-19 07:44:57,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 852 transitions. [2023-11-19 07:44:57,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:44:57,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 852 transitions. [2023-11-19 07:44:57,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 142.0) internal successors, (852), 6 states have internal predecessors, (852), 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 07:44:57,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 275.0) internal successors, (1925), 7 states have internal predecessors, (1925), 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 07:44:57,423 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 275.0) internal successors, (1925), 7 states have internal predecessors, (1925), 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 07:44:57,423 INFO L175 Difference]: Start difference. First operand has 64 places, 102 transitions, 457 flow. Second operand 6 states and 852 transitions. [2023-11-19 07:44:57,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 151 transitions, 892 flow [2023-11-19 07:44:57,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 151 transitions, 844 flow, removed 13 selfloop flow, removed 5 redundant places. [2023-11-19 07:44:57,435 INFO L231 Difference]: Finished difference. Result has 69 places, 126 transitions, 663 flow [2023-11-19 07:44:57,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=663, PETRI_PLACES=69, PETRI_TRANSITIONS=126} [2023-11-19 07:44:57,439 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 19 predicate places. [2023-11-19 07:44:57,442 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 126 transitions, 663 flow [2023-11-19 07:44:57,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 131.83333333333334) internal successors, (791), 6 states have internal predecessors, (791), 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 07:44:57,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:57,443 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-19 07:44:57,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc198e68-b602-48c6-a6cc-72907ee97424/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:44:57,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc198e68-b602-48c6-a6cc-72907ee97424/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:44:57,666 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thread_routineErr0ASSERT_VIOLATIONDATA_RACE, thread_routineErr1ASSERT_VIOLATIONDATA_RACE, thread_routineErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-19 07:44:57,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:57,667 INFO L85 PathProgramCache]: Analyzing trace with hash -768915253, now seen corresponding path program 1 times [2023-11-19 07:44:57,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:57,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398025873] [2023-11-19 07:44:57,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:57,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:57,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:57,964 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 07:44:57,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:44:57,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398025873] [2023-11-19 07:44:57,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398025873] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:44:57,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401958906] [2023-11-19 07:44:57,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:57,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:44:57,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc198e68-b602-48c6-a6cc-72907ee97424/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:44:57,968 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc198e68-b602-48c6-a6cc-72907ee97424/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:44:58,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc198e68-b602-48c6-a6cc-72907ee97424/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:44:58,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:58,131 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 07:44:58,133 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:44:58,188 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 07:44:58,189 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:44:58,473 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 07:44:58,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401958906] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:44:58,474 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:44:58,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2023-11-19 07:44:58,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395890293] [2023-11-19 07:44:58,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:44:58,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-19 07:44:58,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:58,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-19 07:44:58,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-11-19 07:44:59,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 275 [2023-11-19 07:44:59,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 126 transitions, 663 flow. Second operand has 25 states, 25 states have (on average 126.28) internal successors, (3157), 25 states have internal predecessors, (3157), 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 07:44:59,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:44:59,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 275 [2023-11-19 07:44:59,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:44:59,364 INFO L124 PetriNetUnfolderBase]: 274/715 cut-off events. [2023-11-19 07:44:59,364 INFO L125 PetriNetUnfolderBase]: For 467/507 co-relation queries the response was YES. [2023-11-19 07:44:59,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2021 conditions, 715 events. 274/715 cut-off events. For 467/507 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 3576 event pairs, 17 based on Foata normal form. 11/654 useless extension candidates. Maximal degree in co-relation 1899. Up to 339 conditions per place. [2023-11-19 07:44:59,376 INFO L140 encePairwiseOnDemand]: 271/275 looper letters, 46 selfloop transitions, 25 changer transitions 0/155 dead transitions. [2023-11-19 07:44:59,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 155 transitions, 907 flow [2023-11-19 07:44:59,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-19 07:44:59,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-19 07:44:59,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3071 transitions. [2023-11-19 07:44:59,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46530303030303033 [2023-11-19 07:44:59,392 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3071 transitions. [2023-11-19 07:44:59,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3071 transitions. [2023-11-19 07:44:59,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:44:59,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3071 transitions. [2023-11-19 07:44:59,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 127.95833333333333) internal successors, (3071), 24 states have internal predecessors, (3071), 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 07:44:59,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 275.0) internal successors, (6875), 25 states have internal predecessors, (6875), 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 07:44:59,427 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 275.0) internal successors, (6875), 25 states have internal predecessors, (6875), 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 07:44:59,428 INFO L175 Difference]: Start difference. First operand has 69 places, 126 transitions, 663 flow. Second operand 24 states and 3071 transitions. [2023-11-19 07:44:59,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 155 transitions, 907 flow [2023-11-19 07:44:59,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 155 transitions, 883 flow, removed 12 selfloop flow, removed 0 redundant places. [2023-11-19 07:44:59,440 INFO L231 Difference]: Finished difference. Result has 92 places, 138 transitions, 739 flow [2023-11-19 07:44:59,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=639, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=739, PETRI_PLACES=92, PETRI_TRANSITIONS=138} [2023-11-19 07:44:59,441 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 42 predicate places. [2023-11-19 07:44:59,442 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 138 transitions, 739 flow [2023-11-19 07:44:59,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 126.28) internal successors, (3157), 25 states have internal predecessors, (3157), 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 07:44:59,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:59,444 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:44:59,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc198e68-b602-48c6-a6cc-72907ee97424/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:44:59,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc198e68-b602-48c6-a6cc-72907ee97424/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:44:59,670 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread_routineErr0ASSERT_VIOLATIONDATA_RACE, thread_routineErr1ASSERT_VIOLATIONDATA_RACE, thread_routineErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-19 07:44:59,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:59,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1694750488, now seen corresponding path program 1 times [2023-11-19 07:44:59,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:59,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206801712] [2023-11-19 07:44:59,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:59,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:59,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:00,594 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 07:45:00,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:00,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206801712] [2023-11-19 07:45:00,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206801712] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:45:00,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912324870] [2023-11-19 07:45:00,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:00,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:00,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc198e68-b602-48c6-a6cc-72907ee97424/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:00,597 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc198e68-b602-48c6-a6cc-72907ee97424/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:45:00,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc198e68-b602-48c6-a6cc-72907ee97424/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:45:00,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:00,830 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-19 07:45:00,838 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:45:00,944 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 07:45:00,945 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:45:02,165 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 07:45:02,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912324870] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:45:02,165 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:45:02,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 48 [2023-11-19 07:45:02,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240609433] [2023-11-19 07:45:02,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:45:02,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-11-19 07:45:02,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:02,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-11-19 07:45:02,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2023-11-19 07:45:03,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 275 [2023-11-19 07:45:03,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 138 transitions, 739 flow. Second operand has 49 states, 49 states have (on average 126.16326530612245) internal successors, (6182), 49 states have internal predecessors, (6182), 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 07:45:03,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:45:03,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 275 [2023-11-19 07:45:03,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:45:04,109 INFO L124 PetriNetUnfolderBase]: 274/751 cut-off events. [2023-11-19 07:45:04,109 INFO L125 PetriNetUnfolderBase]: For 515/542 co-relation queries the response was YES. [2023-11-19 07:45:04,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2120 conditions, 751 events. 274/751 cut-off events. For 515/542 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 3525 event pairs, 52 based on Foata normal form. 3/684 useless extension candidates. Maximal degree in co-relation 1883. Up to 339 conditions per place. [2023-11-19 07:45:04,120 INFO L140 encePairwiseOnDemand]: 271/275 looper letters, 46 selfloop transitions, 49 changer transitions 0/179 dead transitions. [2023-11-19 07:45:04,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 179 transitions, 1127 flow [2023-11-19 07:45:04,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-19 07:45:04,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-11-19 07:45:04,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 6107 transitions. [2023-11-19 07:45:04,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46265151515151515 [2023-11-19 07:45:04,152 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 6107 transitions. [2023-11-19 07:45:04,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 6107 transitions. [2023-11-19 07:45:04,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:45:04,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 6107 transitions. [2023-11-19 07:45:04,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 127.22916666666667) internal successors, (6107), 48 states have internal predecessors, (6107), 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 07:45:04,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 275.0) internal successors, (13475), 49 states have internal predecessors, (13475), 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 07:45:04,239 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 275.0) internal successors, (13475), 49 states have internal predecessors, (13475), 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 07:45:04,240 INFO L175 Difference]: Start difference. First operand has 92 places, 138 transitions, 739 flow. Second operand 48 states and 6107 transitions. [2023-11-19 07:45:04,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 179 transitions, 1127 flow [2023-11-19 07:45:04,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 179 transitions, 1003 flow, removed 49 selfloop flow, removed 11 redundant places. [2023-11-19 07:45:04,257 INFO L231 Difference]: Finished difference. Result has 128 places, 162 transitions, 859 flow [2023-11-19 07:45:04,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=663, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=859, PETRI_PLACES=128, PETRI_TRANSITIONS=162} [2023-11-19 07:45:04,262 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 78 predicate places. [2023-11-19 07:45:04,263 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 162 transitions, 859 flow [2023-11-19 07:45:04,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 126.16326530612245) internal successors, (6182), 49 states have internal predecessors, (6182), 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 07:45:04,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:04,266 INFO L208 CegarLoopForPetriNet]: trace histogram [46, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:04,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc198e68-b602-48c6-a6cc-72907ee97424/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:45:04,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc198e68-b602-48c6-a6cc-72907ee97424/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:04,479 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread_routineErr0ASSERT_VIOLATIONDATA_RACE, thread_routineErr1ASSERT_VIOLATIONDATA_RACE, thread_routineErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-19 07:45:04,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:04,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1018523240, now seen corresponding path program 2 times [2023-11-19 07:45:04,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:04,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606637141] [2023-11-19 07:45:04,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:04,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:04,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:07,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1087 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 07:45:07,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:07,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606637141] [2023-11-19 07:45:07,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606637141] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:45:07,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003496330] [2023-11-19 07:45:07,266 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:45:07,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:07,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc198e68-b602-48c6-a6cc-72907ee97424/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:07,267 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc198e68-b602-48c6-a6cc-72907ee97424/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:45:07,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc198e68-b602-48c6-a6cc-72907ee97424/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:45:07,505 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:45:07,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:45:07,509 INFO L262 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-19 07:45:07,514 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:45:07,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1087 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 07:45:07,646 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:45:11,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1087 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 07:45:11,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003496330] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:45:11,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:45:11,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 96 [2023-11-19 07:45:11,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267674280] [2023-11-19 07:45:11,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:45:11,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2023-11-19 07:45:11,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:11,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2023-11-19 07:45:11,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2023-11-19 07:45:14,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 275 [2023-11-19 07:45:14,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 162 transitions, 859 flow. Second operand has 97 states, 97 states have (on average 126.08247422680412) internal successors, (12230), 97 states have internal predecessors, (12230), 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 07:45:14,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:45:14,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 275 [2023-11-19 07:45:14,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:45:14,480 INFO L124 PetriNetUnfolderBase]: 274/799 cut-off events. [2023-11-19 07:45:14,480 INFO L125 PetriNetUnfolderBase]: For 515/542 co-relation queries the response was YES. [2023-11-19 07:45:14,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2300 conditions, 799 events. 274/799 cut-off events. For 515/542 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 3531 event pairs, 52 based on Foata normal form. 3/732 useless extension candidates. Maximal degree in co-relation 1883. Up to 339 conditions per place. [2023-11-19 07:45:14,489 INFO L140 encePairwiseOnDemand]: 271/275 looper letters, 46 selfloop transitions, 97 changer transitions 0/227 dead transitions. [2023-11-19 07:45:14,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 227 transitions, 1487 flow [2023-11-19 07:45:14,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-11-19 07:45:14,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2023-11-19 07:45:14,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 12179 transitions. [2023-11-19 07:45:14,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46132575757575756 [2023-11-19 07:45:14,517 INFO L72 ComplementDD]: Start complementDD. Operand 96 states and 12179 transitions. [2023-11-19 07:45:14,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 96 states and 12179 transitions. [2023-11-19 07:45:14,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:45:14,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 96 states and 12179 transitions. [2023-11-19 07:45:14,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 97 states, 96 states have (on average 126.86458333333333) internal successors, (12179), 96 states have internal predecessors, (12179), 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 07:45:14,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 97 states, 97 states have (on average 275.0) internal successors, (26675), 97 states have internal predecessors, (26675), 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 07:45:14,595 INFO L81 ComplementDD]: Finished complementDD. Result has 97 states, 97 states have (on average 275.0) internal successors, (26675), 97 states have internal predecessors, (26675), 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 07:45:14,596 INFO L175 Difference]: Start difference. First operand has 128 places, 162 transitions, 859 flow. Second operand 96 states and 12179 transitions. [2023-11-19 07:45:14,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 227 transitions, 1487 flow [2023-11-19 07:45:14,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 227 transitions, 1243 flow, removed 97 selfloop flow, removed 23 redundant places. [2023-11-19 07:45:14,614 INFO L231 Difference]: Finished difference. Result has 200 places, 210 transitions, 1099 flow [2023-11-19 07:45:14,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=711, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=96, PETRI_FLOW=1099, PETRI_PLACES=200, PETRI_TRANSITIONS=210} [2023-11-19 07:45:14,617 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 150 predicate places. [2023-11-19 07:45:14,617 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 210 transitions, 1099 flow [2023-11-19 07:45:14,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 126.08247422680412) internal successors, (12230), 97 states have internal predecessors, (12230), 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 07:45:14,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:14,622 INFO L208 CegarLoopForPetriNet]: trace histogram [94, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:14,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc198e68-b602-48c6-a6cc-72907ee97424/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:45:14,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc198e68-b602-48c6-a6cc-72907ee97424/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:14,850 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread_routineErr0ASSERT_VIOLATIONDATA_RACE, thread_routineErr1ASSERT_VIOLATIONDATA_RACE, thread_routineErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-19 07:45:14,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:14,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1734244712, now seen corresponding path program 3 times [2023-11-19 07:45:14,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:14,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012211637] [2023-11-19 07:45:14,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:14,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:15,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:22,832 INFO L134 CoverageAnalysis]: Checked inductivity of 4471 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 07:45:22,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:22,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012211637] [2023-11-19 07:45:22,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012211637] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:45:22,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830418845] [2023-11-19 07:45:22,833 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 07:45:22,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:22,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc198e68-b602-48c6-a6cc-72907ee97424/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:22,835 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc198e68-b602-48c6-a6cc-72907ee97424/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:45:22,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc198e68-b602-48c6-a6cc-72907ee97424/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process