./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-race-challenges/thread-join-binomial-race-3.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_ab96f3a6-21b1-497c-801a-37643ce6de9a/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab96f3a6-21b1-497c-801a-37643ce6de9a/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_ab96f3a6-21b1-497c-801a-37643ce6de9a/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab96f3a6-21b1-497c-801a-37643ce6de9a/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-race-challenges/thread-join-binomial-race-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab96f3a6-21b1-497c-801a-37643ce6de9a/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_ab96f3a6-21b1-497c-801a-37643ce6de9a/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 2fcf549dbbd9dfa3c3590290694ca7785fc56f3cc704f9ad7d537aaa6ab3cd10 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:45:06,669 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:45:06,806 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab96f3a6-21b1-497c-801a-37643ce6de9a/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-19 07:45:06,811 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:45:06,812 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:45:06,848 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:45:06,849 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:45:06,850 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:45:06,850 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:45:06,851 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:45:06,852 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:45:06,852 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:45:06,853 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:45:06,854 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:45:06,854 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:45:06,855 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:45:06,855 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:45:06,856 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:45:06,856 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:45:06,857 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:45:06,857 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:45:06,858 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:45:06,859 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-19 07:45:06,859 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:45:06,860 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:45:06,860 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:45:06,861 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:45:06,862 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:45:06,862 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:45:06,863 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:45:06,863 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:45:06,864 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:45:06,864 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:45:06,865 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:45:06,865 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:45:06,866 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:45:06,866 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:45:06,867 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:45:06,867 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:45:06,867 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:45:06,868 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:45:06,868 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_ab96f3a6-21b1-497c-801a-37643ce6de9a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab96f3a6-21b1-497c-801a-37643ce6de9a/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2fcf549dbbd9dfa3c3590290694ca7785fc56f3cc704f9ad7d537aaa6ab3cd10 [2023-11-19 07:45:07,189 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:45:07,222 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:45:07,224 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:45:07,226 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:45:07,226 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:45:07,228 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab96f3a6-21b1-497c-801a-37643ce6de9a/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-race-challenges/thread-join-binomial-race-3.i [2023-11-19 07:45:10,410 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:45:10,759 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:45:10,759 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab96f3a6-21b1-497c-801a-37643ce6de9a/sv-benchmarks/c/pthread-race-challenges/thread-join-binomial-race-3.i [2023-11-19 07:45:10,793 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab96f3a6-21b1-497c-801a-37643ce6de9a/bin/uautomizer-verify-uCwYo4JHxu/data/bb51f4be8/cae28c2450734e6e866cf99db24a4b84/FLAGafafa65c8 [2023-11-19 07:45:10,815 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab96f3a6-21b1-497c-801a-37643ce6de9a/bin/uautomizer-verify-uCwYo4JHxu/data/bb51f4be8/cae28c2450734e6e866cf99db24a4b84 [2023-11-19 07:45:10,822 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:45:10,824 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:45:10,826 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:45:10,826 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:45:10,832 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:45:10,833 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:45:10" (1/1) ... [2023-11-19 07:45:10,834 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23e6ae7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:10, skipping insertion in model container [2023-11-19 07:45:10,835 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:45:10" (1/1) ... [2023-11-19 07:45:10,914 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:45:11,135 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 07:45:11,427 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:45:11,439 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:45:11,454 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 07:45:11,493 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:45:11,555 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:45:11,564 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:45:11,564 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:11 WrapperNode [2023-11-19 07:45:11,564 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:45:11,566 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:45:11,566 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:45:11,566 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:45:11,573 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:11" (1/1) ... [2023-11-19 07:45:11,597 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:11" (1/1) ... [2023-11-19 07:45:11,636 INFO L138 Inliner]: procedures = 268, calls = 24, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 93 [2023-11-19 07:45:11,636 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:45:11,637 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:45:11,637 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:45:11,638 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:45:11,647 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:11" (1/1) ... [2023-11-19 07:45:11,648 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:11" (1/1) ... [2023-11-19 07:45:11,653 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:11" (1/1) ... [2023-11-19 07:45:11,653 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:11" (1/1) ... [2023-11-19 07:45:11,667 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:11" (1/1) ... [2023-11-19 07:45:11,672 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:11" (1/1) ... [2023-11-19 07:45:11,674 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:11" (1/1) ... [2023-11-19 07:45:11,676 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:11" (1/1) ... [2023-11-19 07:45:11,681 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:45:11,681 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:45:11,682 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:45:11,682 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:45:11,683 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:11" (1/1) ... [2023-11-19 07:45:11,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:45:11,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab96f3a6-21b1-497c-801a-37643ce6de9a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:11,719 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab96f3a6-21b1-497c-801a-37643ce6de9a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:45:11,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab96f3a6-21b1-497c-801a-37643ce6de9a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:45:11,763 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 07:45:11,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:45:11,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 07:45:11,764 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:45:11,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:45:11,766 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 07:45:11,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:45:11,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:45:11,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 07:45:11,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:45:11,769 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2023-11-19 07:45:11,769 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2023-11-19 07:45:11,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:45:11,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:45:11,771 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 07:45:11,955 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:45:11,958 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:45:12,456 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:45:12,467 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:45:12,467 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 07:45:12,472 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:45:12 BoogieIcfgContainer [2023-11-19 07:45:12,472 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:45:12,474 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:45:12,474 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:45:12,478 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:45:12,478 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:45:10" (1/3) ... [2023-11-19 07:45:12,478 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36158dd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:45:12, skipping insertion in model container [2023-11-19 07:45:12,479 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:11" (2/3) ... [2023-11-19 07:45:12,479 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36158dd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:45:12, skipping insertion in model container [2023-11-19 07:45:12,479 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:45:12" (3/3) ... [2023-11-19 07:45:12,480 INFO L112 eAbstractionObserver]: Analyzing ICFG thread-join-binomial-race-3.i [2023-11-19 07:45:12,488 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:45:12,497 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:45:12,497 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-19 07:45:12,497 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:45:12,594 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-19 07:45:12,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 224 places, 238 transitions, 489 flow [2023-11-19 07:45:12,744 INFO L124 PetriNetUnfolderBase]: 10/203 cut-off events. [2023-11-19 07:45:12,745 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:45:12,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 203 events. 10/203 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 272 event pairs, 0 based on Foata normal form. 0/173 useless extension candidates. Maximal degree in co-relation 100. Up to 4 conditions per place. [2023-11-19 07:45:12,756 INFO L82 GeneralOperation]: Start removeDead. Operand has 224 places, 238 transitions, 489 flow [2023-11-19 07:45:12,770 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 164 places, 170 transitions, 347 flow [2023-11-19 07:45:12,783 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:45:12,808 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 164 places, 170 transitions, 347 flow [2023-11-19 07:45:12,811 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 164 places, 170 transitions, 347 flow [2023-11-19 07:45:12,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 170 transitions, 347 flow [2023-11-19 07:45:12,904 INFO L124 PetriNetUnfolderBase]: 10/198 cut-off events. [2023-11-19 07:45:12,905 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:45:12,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 198 events. 10/198 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 271 event pairs, 0 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 100. Up to 4 conditions per place. [2023-11-19 07:45:12,912 INFO L119 LiptonReduction]: Number of co-enabled transitions 4620 [2023-11-19 07:45:26,435 INFO L134 LiptonReduction]: Checked pairs total: 17372 [2023-11-19 07:45:26,436 INFO L136 LiptonReduction]: Total number of compositions: 172 [2023-11-19 07:45:26,452 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:45:26,459 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;@6a438366, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:45:26,460 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-11-19 07:45:26,461 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:45:26,462 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-19 07:45:26,462 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:45:26,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:26,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 07:45:26,464 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2023-11-19 07:45:26,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:26,469 INFO L85 PathProgramCache]: Analyzing trace with hash 672, now seen corresponding path program 1 times [2023-11-19 07:45:26,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:26,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282697205] [2023-11-19 07:45:26,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:26,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:26,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:26,604 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 07:45:26,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:26,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282697205] [2023-11-19 07:45:26,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282697205] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:26,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:26,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 07:45:26,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515934337] [2023-11-19 07:45:26,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:26,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:45:26,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:26,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:45:26,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:45:26,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 410 [2023-11-19 07:45:26,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 103 flow. Second operand has 2 states, 2 states have (on average 228.5) internal successors, (457), 2 states have internal predecessors, (457), 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 07:45:26,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:45:26,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 410 [2023-11-19 07:45:26,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:45:26,758 INFO L124 PetriNetUnfolderBase]: 8/126 cut-off events. [2023-11-19 07:45:26,758 INFO L125 PetriNetUnfolderBase]: For 4/6 co-relation queries the response was YES. [2023-11-19 07:45:26,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 126 events. 8/126 cut-off events. For 4/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 485 event pairs, 8 based on Foata normal form. 1/100 useless extension candidates. Maximal degree in co-relation 125. Up to 29 conditions per place. [2023-11-19 07:45:26,765 INFO L140 encePairwiseOnDemand]: 401/410 looper letters, 8 selfloop transitions, 0 changer transitions 1/39 dead transitions. [2023-11-19 07:45:26,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 39 transitions, 103 flow [2023-11-19 07:45:26,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:45:26,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:45:26,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 474 transitions. [2023-11-19 07:45:26,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5780487804878048 [2023-11-19 07:45:26,792 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 474 transitions. [2023-11-19 07:45:26,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 474 transitions. [2023-11-19 07:45:26,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:45:26,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 474 transitions. [2023-11-19 07:45:26,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 237.0) internal successors, (474), 2 states have internal predecessors, (474), 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 07:45:26,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 410.0) internal successors, (1230), 3 states have internal predecessors, (1230), 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 07:45:26,813 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 410.0) internal successors, (1230), 3 states have internal predecessors, (1230), 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 07:45:26,816 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 103 flow. Second operand 2 states and 474 transitions. [2023-11-19 07:45:26,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 39 transitions, 103 flow [2023-11-19 07:45:26,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 39 transitions, 103 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:45:26,823 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 80 flow [2023-11-19 07:45:26,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=80, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2023-11-19 07:45:26,830 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -8 predicate places. [2023-11-19 07:45:26,830 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 80 flow [2023-11-19 07:45:26,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 228.5) internal successors, (457), 2 states have internal predecessors, (457), 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 07:45:26,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:26,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:45:26,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:45:26,832 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2023-11-19 07:45:26,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:26,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1489641555, now seen corresponding path program 1 times [2023-11-19 07:45:26,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:26,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247460881] [2023-11-19 07:45:26,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:26,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:26,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:27,055 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 07:45:27,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:27,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247460881] [2023-11-19 07:45:27,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247460881] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:27,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:27,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:45:27,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335732459] [2023-11-19 07:45:27,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:27,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:45:27,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:27,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:45:27,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:45:27,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 410 [2023-11-19 07:45:27,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 222.66666666666666) internal successors, (668), 3 states have internal predecessors, (668), 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 07:45:27,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:45:27,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 410 [2023-11-19 07:45:27,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:45:27,132 INFO L124 PetriNetUnfolderBase]: 8/95 cut-off events. [2023-11-19 07:45:27,132 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:45:27,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 95 events. 8/95 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 365 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 122. Up to 21 conditions per place. [2023-11-19 07:45:27,133 INFO L140 encePairwiseOnDemand]: 407/410 looper letters, 9 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2023-11-19 07:45:27,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 41 transitions, 108 flow [2023-11-19 07:45:27,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:45:27,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:45:27,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 678 transitions. [2023-11-19 07:45:27,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.551219512195122 [2023-11-19 07:45:27,139 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 678 transitions. [2023-11-19 07:45:27,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 678 transitions. [2023-11-19 07:45:27,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:45:27,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 678 transitions. [2023-11-19 07:45:27,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 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 07:45:27,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 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 07:45:27,148 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 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 07:45:27,149 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 80 flow. Second operand 3 states and 678 transitions. [2023-11-19 07:45:27,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 41 transitions, 108 flow [2023-11-19 07:45:27,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 41 transitions, 108 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:45:27,151 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 88 flow [2023-11-19 07:45:27,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2023-11-19 07:45:27,152 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -6 predicate places. [2023-11-19 07:45:27,152 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 88 flow [2023-11-19 07:45:27,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 222.66666666666666) internal successors, (668), 3 states have internal predecessors, (668), 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 07:45:27,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:27,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:45:27,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:45:27,154 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2023-11-19 07:45:27,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:27,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1472781267, now seen corresponding path program 1 times [2023-11-19 07:45:27,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:27,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803122785] [2023-11-19 07:45:27,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:27,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:27,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:27,683 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 07:45:27,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:27,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803122785] [2023-11-19 07:45:27,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803122785] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:27,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:27,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:45:27,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590440608] [2023-11-19 07:45:27,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:27,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:45:27,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:27,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:45:27,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:45:28,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 410 [2023-11-19 07:45:28,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 88 flow. Second operand has 6 states, 6 states have (on average 193.0) internal successors, (1158), 6 states have internal predecessors, (1158), 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 07:45:28,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:45:28,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 410 [2023-11-19 07:45:28,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:45:28,343 INFO L124 PetriNetUnfolderBase]: 84/326 cut-off events. [2023-11-19 07:45:28,343 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2023-11-19 07:45:28,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 553 conditions, 326 events. 84/326 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1728 event pairs, 84 based on Foata normal form. 0/294 useless extension candidates. Maximal degree in co-relation 547. Up to 190 conditions per place. [2023-11-19 07:45:28,346 INFO L140 encePairwiseOnDemand]: 403/410 looper letters, 21 selfloop transitions, 4 changer transitions 0/39 dead transitions. [2023-11-19 07:45:28,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 39 transitions, 140 flow [2023-11-19 07:45:28,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:45:28,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:45:28,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1180 transitions. [2023-11-19 07:45:28,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4796747967479675 [2023-11-19 07:45:28,352 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1180 transitions. [2023-11-19 07:45:28,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1180 transitions. [2023-11-19 07:45:28,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:45:28,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1180 transitions. [2023-11-19 07:45:28,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 196.66666666666666) internal successors, (1180), 6 states have internal predecessors, (1180), 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 07:45:28,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 410.0) internal successors, (2870), 7 states have internal predecessors, (2870), 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 07:45:28,384 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 410.0) internal successors, (2870), 7 states have internal predecessors, (2870), 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 07:45:28,384 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 88 flow. Second operand 6 states and 1180 transitions. [2023-11-19 07:45:28,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 39 transitions, 140 flow [2023-11-19 07:45:28,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 39 transitions, 136 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:45:28,386 INFO L231 Difference]: Finished difference. Result has 49 places, 39 transitions, 109 flow [2023-11-19 07:45:28,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=109, PETRI_PLACES=49, PETRI_TRANSITIONS=39} [2023-11-19 07:45:28,388 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -2 predicate places. [2023-11-19 07:45:28,388 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 39 transitions, 109 flow [2023-11-19 07:45:28,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 193.0) internal successors, (1158), 6 states have internal predecessors, (1158), 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 07:45:28,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:28,390 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2023-11-19 07:45:28,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:45:28,390 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2023-11-19 07:45:28,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:28,391 INFO L85 PathProgramCache]: Analyzing trace with hash 459811018, now seen corresponding path program 1 times [2023-11-19 07:45:28,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:28,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489145217] [2023-11-19 07:45:28,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:28,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:28,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:45:28,435 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:45:28,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:45:28,487 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:45:28,491 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:45:28,493 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2023-11-19 07:45:28,495 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (17 of 19 remaining) [2023-11-19 07:45:28,496 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 19 remaining) [2023-11-19 07:45:28,497 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (15 of 19 remaining) [2023-11-19 07:45:28,497 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (14 of 19 remaining) [2023-11-19 07:45:28,497 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (13 of 19 remaining) [2023-11-19 07:45:28,498 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (12 of 19 remaining) [2023-11-19 07:45:28,498 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (11 of 19 remaining) [2023-11-19 07:45:28,498 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (10 of 19 remaining) [2023-11-19 07:45:28,499 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (9 of 19 remaining) [2023-11-19 07:45:28,499 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (8 of 19 remaining) [2023-11-19 07:45:28,500 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (7 of 19 remaining) [2023-11-19 07:45:28,500 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONDATA_RACE (6 of 19 remaining) [2023-11-19 07:45:28,500 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONDATA_RACE (5 of 19 remaining) [2023-11-19 07:45:28,501 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONDATA_RACE (4 of 19 remaining) [2023-11-19 07:45:28,501 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (3 of 19 remaining) [2023-11-19 07:45:28,501 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONDATA_RACE (2 of 19 remaining) [2023-11-19 07:45:28,502 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONDATA_RACE (1 of 19 remaining) [2023-11-19 07:45:28,503 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONDATA_RACE (0 of 19 remaining) [2023-11-19 07:45:28,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:45:28,503 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-19 07:45:28,507 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:45:28,508 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 07:45:28,588 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-11-19 07:45:28,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 291 places, 315 transitions, 664 flow [2023-11-19 07:45:28,779 INFO L124 PetriNetUnfolderBase]: 46/651 cut-off events. [2023-11-19 07:45:28,779 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-19 07:45:28,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 675 conditions, 651 events. 46/651 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2163 event pairs, 0 based on Foata normal form. 0/551 useless extension candidates. Maximal degree in co-relation 369. Up to 12 conditions per place. [2023-11-19 07:45:28,787 INFO L82 GeneralOperation]: Start removeDead. Operand has 291 places, 315 transitions, 664 flow [2023-11-19 07:45:28,794 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 241 places, 255 transitions, 532 flow [2023-11-19 07:45:28,795 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:45:28,795 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 241 places, 255 transitions, 532 flow [2023-11-19 07:45:28,797 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 241 places, 255 transitions, 532 flow [2023-11-19 07:45:28,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 241 places, 255 transitions, 532 flow [2023-11-19 07:45:28,948 INFO L124 PetriNetUnfolderBase]: 46/651 cut-off events. [2023-11-19 07:45:28,948 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-19 07:45:28,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 675 conditions, 651 events. 46/651 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2164 event pairs, 0 based on Foata normal form. 0/551 useless extension candidates. Maximal degree in co-relation 369. Up to 12 conditions per place. [2023-11-19 07:45:29,011 INFO L119 LiptonReduction]: Number of co-enabled transitions 25758 [2023-11-19 07:45:47,047 INFO L134 LiptonReduction]: Checked pairs total: 117324 [2023-11-19 07:45:47,047 INFO L136 LiptonReduction]: Total number of compositions: 221 [2023-11-19 07:45:47,050 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:45:47,051 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;@6a438366, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:45:47,052 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2023-11-19 07:45:47,053 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:45:47,053 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-19 07:45:47,053 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:45:47,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:47,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 07:45:47,054 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-11-19 07:45:47,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:47,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1227, now seen corresponding path program 1 times [2023-11-19 07:45:47,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:47,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602746803] [2023-11-19 07:45:47,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:47,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:47,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:47,063 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 07:45:47,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:47,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602746803] [2023-11-19 07:45:47,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602746803] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:47,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:47,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 07:45:47,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601206245] [2023-11-19 07:45:47,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:47,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:45:47,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:47,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:45:47,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:45:47,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 297 out of 536 [2023-11-19 07:45:47,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 97 transitions, 216 flow. Second operand has 2 states, 2 states have (on average 297.5) internal successors, (595), 2 states have internal predecessors, (595), 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 07:45:47,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:45:47,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 297 of 536 [2023-11-19 07:45:47,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:45:47,574 INFO L124 PetriNetUnfolderBase]: 874/2806 cut-off events. [2023-11-19 07:45:47,574 INFO L125 PetriNetUnfolderBase]: For 132/168 co-relation queries the response was YES. [2023-11-19 07:45:47,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4303 conditions, 2806 events. 874/2806 cut-off events. For 132/168 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 20705 event pairs, 668 based on Foata normal form. 0/2305 useless extension candidates. Maximal degree in co-relation 3373. Up to 1425 conditions per place. [2023-11-19 07:45:47,600 INFO L140 encePairwiseOnDemand]: 531/536 looper letters, 32 selfloop transitions, 0 changer transitions 0/92 dead transitions. [2023-11-19 07:45:47,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 92 transitions, 270 flow [2023-11-19 07:45:47,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:45:47,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:45:47,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 631 transitions. [2023-11-19 07:45:47,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5886194029850746 [2023-11-19 07:45:47,603 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 631 transitions. [2023-11-19 07:45:47,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 631 transitions. [2023-11-19 07:45:47,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:45:47,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 631 transitions. [2023-11-19 07:45:47,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 315.5) internal successors, (631), 2 states have internal predecessors, (631), 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 07:45:47,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 536.0) internal successors, (1608), 3 states have internal predecessors, (1608), 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 07:45:47,611 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 536.0) internal successors, (1608), 3 states have internal predecessors, (1608), 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 07:45:47,611 INFO L175 Difference]: Start difference. First operand has 97 places, 97 transitions, 216 flow. Second operand 2 states and 631 transitions. [2023-11-19 07:45:47,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 92 transitions, 270 flow [2023-11-19 07:45:47,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 92 transitions, 270 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:45:47,617 INFO L231 Difference]: Finished difference. Result has 93 places, 92 transitions, 206 flow [2023-11-19 07:45:47,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=536, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=206, PETRI_PLACES=93, PETRI_TRANSITIONS=92} [2023-11-19 07:45:47,620 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -4 predicate places. [2023-11-19 07:45:47,620 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 92 transitions, 206 flow [2023-11-19 07:45:47,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 297.5) internal successors, (595), 2 states have internal predecessors, (595), 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 07:45:47,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:47,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:45:47,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:45:47,622 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-11-19 07:45:47,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:47,622 INFO L85 PathProgramCache]: Analyzing trace with hash -2109341736, now seen corresponding path program 1 times [2023-11-19 07:45:47,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:47,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512258] [2023-11-19 07:45:47,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:47,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:47,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:47,937 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 07:45:47,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:47,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512258] [2023-11-19 07:45:47,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512258] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:47,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:47,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:45:47,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910908765] [2023-11-19 07:45:47,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:47,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:45:47,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:47,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:45:47,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:45:48,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 536 [2023-11-19 07:45:48,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 92 transitions, 206 flow. Second operand has 6 states, 6 states have (on average 256.0) internal successors, (1536), 6 states have internal predecessors, (1536), 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 07:45:48,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:45:48,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 536 [2023-11-19 07:45:48,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:45:50,334 INFO L124 PetriNetUnfolderBase]: 5411/11393 cut-off events. [2023-11-19 07:45:50,334 INFO L125 PetriNetUnfolderBase]: For 277/369 co-relation queries the response was YES. [2023-11-19 07:45:50,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19991 conditions, 11393 events. 5411/11393 cut-off events. For 277/369 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 86454 event pairs, 4632 based on Foata normal form. 0/10024 useless extension candidates. Maximal degree in co-relation 19986. Up to 8466 conditions per place. [2023-11-19 07:45:50,437 INFO L140 encePairwiseOnDemand]: 523/536 looper letters, 53 selfloop transitions, 8 changer transitions 0/95 dead transitions. [2023-11-19 07:45:50,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 95 transitions, 334 flow [2023-11-19 07:45:50,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:45:50,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:45:50,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1596 transitions. [2023-11-19 07:45:50,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4962686567164179 [2023-11-19 07:45:50,445 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1596 transitions. [2023-11-19 07:45:50,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1596 transitions. [2023-11-19 07:45:50,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:45:50,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1596 transitions. [2023-11-19 07:45:50,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 266.0) internal successors, (1596), 6 states have internal predecessors, (1596), 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 07:45:50,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 536.0) internal successors, (3752), 7 states have internal predecessors, (3752), 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 07:45:50,465 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 536.0) internal successors, (3752), 7 states have internal predecessors, (3752), 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 07:45:50,465 INFO L175 Difference]: Start difference. First operand has 93 places, 92 transitions, 206 flow. Second operand 6 states and 1596 transitions. [2023-11-19 07:45:50,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 95 transitions, 334 flow [2023-11-19 07:45:50,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 95 transitions, 334 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:45:50,476 INFO L231 Difference]: Finished difference. Result has 97 places, 95 transitions, 258 flow [2023-11-19 07:45:50,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=536, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=258, PETRI_PLACES=97, PETRI_TRANSITIONS=95} [2023-11-19 07:45:50,478 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, 0 predicate places. [2023-11-19 07:45:50,478 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 95 transitions, 258 flow [2023-11-19 07:45:50,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 256.0) internal successors, (1536), 6 states have internal predecessors, (1536), 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 07:45:50,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:50,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:50,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:45:50,481 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-11-19 07:45:50,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:50,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1487433186, now seen corresponding path program 1 times [2023-11-19 07:45:50,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:50,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925961921] [2023-11-19 07:45:50,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:50,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:50,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:50,546 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 07:45:50,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:50,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925961921] [2023-11-19 07:45:50,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925961921] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:50,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:50,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:45:50,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285442304] [2023-11-19 07:45:50,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:50,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:45:50,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:50,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:45:50,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:45:50,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 291 out of 536 [2023-11-19 07:45:50,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 95 transitions, 258 flow. Second operand has 3 states, 3 states have (on average 292.0) internal successors, (876), 3 states have internal predecessors, (876), 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 07:45:50,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:45:50,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 291 of 536 [2023-11-19 07:45:50,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:45:51,193 INFO L124 PetriNetUnfolderBase]: 878/2771 cut-off events. [2023-11-19 07:45:51,194 INFO L125 PetriNetUnfolderBase]: For 176/176 co-relation queries the response was YES. [2023-11-19 07:45:51,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4589 conditions, 2771 events. 878/2771 cut-off events. For 176/176 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 20151 event pairs, 332 based on Foata normal form. 0/2339 useless extension candidates. Maximal degree in co-relation 4580. Up to 1420 conditions per place. [2023-11-19 07:45:51,221 INFO L140 encePairwiseOnDemand]: 533/536 looper letters, 41 selfloop transitions, 2 changer transitions 0/101 dead transitions. [2023-11-19 07:45:51,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 101 transitions, 344 flow [2023-11-19 07:45:51,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:45:51,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:45:51,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 917 transitions. [2023-11-19 07:45:51,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.570273631840796 [2023-11-19 07:45:51,226 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 917 transitions. [2023-11-19 07:45:51,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 917 transitions. [2023-11-19 07:45:51,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:45:51,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 917 transitions. [2023-11-19 07:45:51,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 305.6666666666667) internal successors, (917), 3 states have internal predecessors, (917), 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 07:45:51,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 536.0) internal successors, (2144), 4 states have internal predecessors, (2144), 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 07:45:51,242 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 536.0) internal successors, (2144), 4 states have internal predecessors, (2144), 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 07:45:51,242 INFO L175 Difference]: Start difference. First operand has 97 places, 95 transitions, 258 flow. Second operand 3 states and 917 transitions. [2023-11-19 07:45:51,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 101 transitions, 344 flow [2023-11-19 07:45:51,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 101 transitions, 338 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-11-19 07:45:51,250 INFO L231 Difference]: Finished difference. Result has 100 places, 92 transitions, 239 flow [2023-11-19 07:45:51,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=536, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=239, PETRI_PLACES=100, PETRI_TRANSITIONS=92} [2023-11-19 07:45:51,252 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, 3 predicate places. [2023-11-19 07:45:51,252 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 92 transitions, 239 flow [2023-11-19 07:45:51,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 292.0) internal successors, (876), 3 states have internal predecessors, (876), 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 07:45:51,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:51,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:51,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:45:51,254 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-11-19 07:45:51,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:51,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1184828826, now seen corresponding path program 1 times [2023-11-19 07:45:51,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:51,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391048401] [2023-11-19 07:45:51,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:51,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:51,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:51,304 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 07:45:51,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:51,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391048401] [2023-11-19 07:45:51,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391048401] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:51,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:51,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:45:51,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828706809] [2023-11-19 07:45:51,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:51,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:45:51,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:51,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:45:51,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:45:51,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 536 [2023-11-19 07:45:51,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 92 transitions, 239 flow. Second operand has 3 states, 3 states have (on average 292.3333333333333) internal successors, (877), 3 states have internal predecessors, (877), 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 07:45:51,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:45:51,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 536 [2023-11-19 07:45:51,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:45:52,067 INFO L124 PetriNetUnfolderBase]: 1259/3477 cut-off events. [2023-11-19 07:45:52,068 INFO L125 PetriNetUnfolderBase]: For 426/492 co-relation queries the response was YES. [2023-11-19 07:45:52,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6058 conditions, 3477 events. 1259/3477 cut-off events. For 426/492 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 25617 event pairs, 769 based on Foata normal form. 3/2892 useless extension candidates. Maximal degree in co-relation 6047. Up to 1703 conditions per place. [2023-11-19 07:45:52,106 INFO L140 encePairwiseOnDemand]: 530/536 looper letters, 56 selfloop transitions, 5 changer transitions 0/115 dead transitions. [2023-11-19 07:45:52,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 115 transitions, 424 flow [2023-11-19 07:45:52,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:45:52,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:45:52,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 929 transitions. [2023-11-19 07:45:52,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5777363184079602 [2023-11-19 07:45:52,113 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 929 transitions. [2023-11-19 07:45:52,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 929 transitions. [2023-11-19 07:45:52,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:45:52,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 929 transitions. [2023-11-19 07:45:52,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 309.6666666666667) internal successors, (929), 3 states have internal predecessors, (929), 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 07:45:52,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 536.0) internal successors, (2144), 4 states have internal predecessors, (2144), 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 07:45:52,125 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 536.0) internal successors, (2144), 4 states have internal predecessors, (2144), 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 07:45:52,126 INFO L175 Difference]: Start difference. First operand has 100 places, 92 transitions, 239 flow. Second operand 3 states and 929 transitions. [2023-11-19 07:45:52,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 115 transitions, 424 flow [2023-11-19 07:45:52,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 115 transitions, 421 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:45:52,131 INFO L231 Difference]: Finished difference. Result has 103 places, 96 transitions, 275 flow [2023-11-19 07:45:52,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=536, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=275, PETRI_PLACES=103, PETRI_TRANSITIONS=96} [2023-11-19 07:45:52,134 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, 6 predicate places. [2023-11-19 07:45:52,134 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 96 transitions, 275 flow [2023-11-19 07:45:52,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 292.3333333333333) internal successors, (877), 3 states have internal predecessors, (877), 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 07:45:52,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:52,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:52,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:45:52,139 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting threadErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-11-19 07:45:52,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:52,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1199911483, now seen corresponding path program 1 times [2023-11-19 07:45:52,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:52,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427987001] [2023-11-19 07:45:52,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:52,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:52,169 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:45:52,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [34696932] [2023-11-19 07:45:52,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:52,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:52,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab96f3a6-21b1-497c-801a-37643ce6de9a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:52,177 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab96f3a6-21b1-497c-801a-37643ce6de9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:45:52,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab96f3a6-21b1-497c-801a-37643ce6de9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:45:52,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:52,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:45:52,360 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:45:53,027 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 07:45:53,027 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:45:53,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:53,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427987001] [2023-11-19 07:45:53,028 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:45:53,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34696932] [2023-11-19 07:45:53,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34696932] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:53,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:53,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:45:53,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099585299] [2023-11-19 07:45:53,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:53,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:45:53,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:53,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:45:53,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:45:53,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 278 out of 536 [2023-11-19 07:45:53,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 96 transitions, 275 flow. Second operand has 3 states, 3 states have (on average 281.0) internal successors, (843), 3 states have internal predecessors, (843), 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 07:45:53,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:45:53,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 278 of 536 [2023-11-19 07:45:53,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:45:53,700 INFO L124 PetriNetUnfolderBase]: 1052/3161 cut-off events. [2023-11-19 07:45:53,700 INFO L125 PetriNetUnfolderBase]: For 769/888 co-relation queries the response was YES. [2023-11-19 07:45:53,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5688 conditions, 3161 events. 1052/3161 cut-off events. For 769/888 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 23503 event pairs, 754 based on Foata normal form. 46/2694 useless extension candidates. Maximal degree in co-relation 5676. Up to 1664 conditions per place. [2023-11-19 07:45:53,731 INFO L140 encePairwiseOnDemand]: 533/536 looper letters, 35 selfloop transitions, 1 changer transitions 0/94 dead transitions. [2023-11-19 07:45:53,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 94 transitions, 343 flow [2023-11-19 07:45:53,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:45:53,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:45:53,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 868 transitions. [2023-11-19 07:45:53,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5398009950248757 [2023-11-19 07:45:53,737 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 868 transitions. [2023-11-19 07:45:53,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 868 transitions. [2023-11-19 07:45:53,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:45:53,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 868 transitions. [2023-11-19 07:45:53,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 289.3333333333333) internal successors, (868), 3 states have internal predecessors, (868), 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 07:45:53,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 536.0) internal successors, (2144), 4 states have internal predecessors, (2144), 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 07:45:53,747 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 536.0) internal successors, (2144), 4 states have internal predecessors, (2144), 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 07:45:53,748 INFO L175 Difference]: Start difference. First operand has 103 places, 96 transitions, 275 flow. Second operand 3 states and 868 transitions. [2023-11-19 07:45:53,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 94 transitions, 343 flow [2023-11-19 07:45:53,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 94 transitions, 333 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:45:53,754 INFO L231 Difference]: Finished difference. Result has 101 places, 94 transitions, 263 flow [2023-11-19 07:45:53,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=536, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=263, PETRI_PLACES=101, PETRI_TRANSITIONS=94} [2023-11-19 07:45:53,759 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, 4 predicate places. [2023-11-19 07:45:53,759 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 94 transitions, 263 flow [2023-11-19 07:45:53,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 281.0) internal successors, (843), 3 states have internal predecessors, (843), 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 07:45:53,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:53,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:53,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab96f3a6-21b1-497c-801a-37643ce6de9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:45:53,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab96f3a6-21b1-497c-801a-37643ce6de9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-19 07:45:53,977 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-11-19 07:45:53,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:53,978 INFO L85 PathProgramCache]: Analyzing trace with hash 584671112, now seen corresponding path program 1 times [2023-11-19 07:45:53,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:53,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883466152] [2023-11-19 07:45:53,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:53,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:54,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:54,078 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 07:45:54,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:54,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883466152] [2023-11-19 07:45:54,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883466152] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:45:54,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916862994] [2023-11-19 07:45:54,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:54,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:54,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab96f3a6-21b1-497c-801a-37643ce6de9a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:54,081 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab96f3a6-21b1-497c-801a-37643ce6de9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:45:54,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab96f3a6-21b1-497c-801a-37643ce6de9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:45:54,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:54,225 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:45:54,227 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:45:54,248 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 07:45:54,249 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:45:54,271 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 07:45:54,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916862994] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:45:54,271 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:45:54,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2023-11-19 07:45:54,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268508327] [2023-11-19 07:45:54,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:45:54,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:45:54,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:54,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:45:54,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:45:54,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 536 [2023-11-19 07:45:54,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 94 transitions, 263 flow. Second operand has 4 states, 4 states have (on average 291.5) internal successors, (1166), 4 states have internal predecessors, (1166), 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 07:45:54,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:45:54,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 536 [2023-11-19 07:45:54,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:45:55,028 INFO L124 PetriNetUnfolderBase]: 1037/3287 cut-off events. [2023-11-19 07:45:55,028 INFO L125 PetriNetUnfolderBase]: For 425/520 co-relation queries the response was YES. [2023-11-19 07:45:55,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5665 conditions, 3287 events. 1037/3287 cut-off events. For 425/520 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 24941 event pairs, 106 based on Foata normal form. 47/2816 useless extension candidates. Maximal degree in co-relation 5653. Up to 1106 conditions per place. [2023-11-19 07:45:55,056 INFO L140 encePairwiseOnDemand]: 532/536 looper letters, 64 selfloop transitions, 4 changer transitions 0/126 dead transitions. [2023-11-19 07:45:55,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 126 transitions, 486 flow [2023-11-19 07:45:55,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:45:55,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:45:55,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1225 transitions. [2023-11-19 07:45:55,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5713619402985075 [2023-11-19 07:45:55,064 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1225 transitions. [2023-11-19 07:45:55,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1225 transitions. [2023-11-19 07:45:55,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:45:55,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1225 transitions. [2023-11-19 07:45:55,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 306.25) internal successors, (1225), 4 states have internal predecessors, (1225), 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 07:45:55,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 536.0) internal successors, (2680), 5 states have internal predecessors, (2680), 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 07:45:55,079 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 536.0) internal successors, (2680), 5 states have internal predecessors, (2680), 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 07:45:55,079 INFO L175 Difference]: Start difference. First operand has 101 places, 94 transitions, 263 flow. Second operand 4 states and 1225 transitions. [2023-11-19 07:45:55,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 126 transitions, 486 flow [2023-11-19 07:45:55,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 126 transitions, 485 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:45:55,086 INFO L231 Difference]: Finished difference. Result has 105 places, 95 transitions, 284 flow [2023-11-19 07:45:55,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=536, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=284, PETRI_PLACES=105, PETRI_TRANSITIONS=95} [2023-11-19 07:45:55,088 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, 8 predicate places. [2023-11-19 07:45:55,088 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 95 transitions, 284 flow [2023-11-19 07:45:55,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 291.5) internal successors, (1166), 4 states have internal predecessors, (1166), 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 07:45:55,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:55,089 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:55,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab96f3a6-21b1-497c-801a-37643ce6de9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:45:55,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab96f3a6-21b1-497c-801a-37643ce6de9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 07:45:55,303 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-11-19 07:45:55,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:55,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1031563105, now seen corresponding path program 1 times [2023-11-19 07:45:55,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:55,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732970234] [2023-11-19 07:45:55,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:55,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:55,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:55,382 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-19 07:45:55,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:55,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732970234] [2023-11-19 07:45:55,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732970234] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:55,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:55,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:45:55,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882026928] [2023-11-19 07:45:55,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:55,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:45:55,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:55,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:45:55,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:45:55,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 536 [2023-11-19 07:45:55,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 95 transitions, 284 flow. Second operand has 3 states, 3 states have (on average 293.0) internal successors, (879), 3 states have internal predecessors, (879), 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 07:45:55,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:45:55,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 536 [2023-11-19 07:45:55,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:45:56,476 INFO L124 PetriNetUnfolderBase]: 1304/3941 cut-off events. [2023-11-19 07:45:56,476 INFO L125 PetriNetUnfolderBase]: For 2513/2700 co-relation queries the response was YES. [2023-11-19 07:45:56,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7722 conditions, 3941 events. 1304/3941 cut-off events. For 2513/2700 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 31266 event pairs, 864 based on Foata normal form. 12/3429 useless extension candidates. Maximal degree in co-relation 7709. Up to 1962 conditions per place. [2023-11-19 07:45:56,524 INFO L140 encePairwiseOnDemand]: 531/536 looper letters, 59 selfloop transitions, 5 changer transitions 0/116 dead transitions. [2023-11-19 07:45:56,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 116 transitions, 483 flow [2023-11-19 07:45:56,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:45:56,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:45:56,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 927 transitions. [2023-11-19 07:45:56,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5764925373134329 [2023-11-19 07:45:56,531 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 927 transitions. [2023-11-19 07:45:56,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 927 transitions. [2023-11-19 07:45:56,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:45:56,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 927 transitions. [2023-11-19 07:45:56,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 309.0) internal successors, (927), 3 states have internal predecessors, (927), 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 07:45:56,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 536.0) internal successors, (2144), 4 states have internal predecessors, (2144), 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 07:45:56,542 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 536.0) internal successors, (2144), 4 states have internal predecessors, (2144), 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 07:45:56,543 INFO L175 Difference]: Start difference. First operand has 105 places, 95 transitions, 284 flow. Second operand 3 states and 927 transitions. [2023-11-19 07:45:56,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 116 transitions, 483 flow [2023-11-19 07:45:56,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 116 transitions, 475 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-19 07:45:56,551 INFO L231 Difference]: Finished difference. Result has 106 places, 98 transitions, 311 flow [2023-11-19 07:45:56,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=536, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=311, PETRI_PLACES=106, PETRI_TRANSITIONS=98} [2023-11-19 07:45:56,554 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, 9 predicate places. [2023-11-19 07:45:56,554 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 98 transitions, 311 flow [2023-11-19 07:45:56,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 293.0) internal successors, (879), 3 states have internal predecessors, (879), 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 07:45:56,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:56,556 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:56,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:45:56,556 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-11-19 07:45:56,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:56,557 INFO L85 PathProgramCache]: Analyzing trace with hash -741898880, now seen corresponding path program 1 times [2023-11-19 07:45:56,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:56,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853587948] [2023-11-19 07:45:56,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:56,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:56,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:56,706 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:45:56,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:56,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853587948] [2023-11-19 07:45:56,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853587948] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:56,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:56,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:45:56,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347243247] [2023-11-19 07:45:56,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:56,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:45:56,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:56,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:45:56,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:45:56,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 292 out of 536 [2023-11-19 07:45:56,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 98 transitions, 311 flow. Second operand has 3 states, 3 states have (on average 295.3333333333333) internal successors, (886), 3 states have internal predecessors, (886), 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 07:45:56,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:45:56,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 292 of 536 [2023-11-19 07:45:56,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:45:57,319 INFO L124 PetriNetUnfolderBase]: 771/2383 cut-off events. [2023-11-19 07:45:57,319 INFO L125 PetriNetUnfolderBase]: For 1228/1378 co-relation queries the response was YES. [2023-11-19 07:45:57,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4741 conditions, 2383 events. 771/2383 cut-off events. For 1228/1378 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 16344 event pairs, 259 based on Foata normal form. 34/2053 useless extension candidates. Maximal degree in co-relation 4727. Up to 730 conditions per place. [2023-11-19 07:45:57,340 INFO L140 encePairwiseOnDemand]: 532/536 looper letters, 55 selfloop transitions, 5 changer transitions 0/118 dead transitions. [2023-11-19 07:45:57,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 118 transitions, 493 flow [2023-11-19 07:45:57,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:45:57,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:45:57,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 930 transitions. [2023-11-19 07:45:57,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5783582089552238 [2023-11-19 07:45:57,345 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 930 transitions. [2023-11-19 07:45:57,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 930 transitions. [2023-11-19 07:45:57,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:45:57,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 930 transitions. [2023-11-19 07:45:57,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 310.0) internal successors, (930), 3 states have internal predecessors, (930), 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 07:45:57,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 536.0) internal successors, (2144), 4 states have internal predecessors, (2144), 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 07:45:57,354 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 536.0) internal successors, (2144), 4 states have internal predecessors, (2144), 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 07:45:57,354 INFO L175 Difference]: Start difference. First operand has 106 places, 98 transitions, 311 flow. Second operand 3 states and 930 transitions. [2023-11-19 07:45:57,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 118 transitions, 493 flow [2023-11-19 07:45:57,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 118 transitions, 488 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-19 07:45:57,361 INFO L231 Difference]: Finished difference. Result has 107 places, 96 transitions, 302 flow [2023-11-19 07:45:57,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=536, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=302, PETRI_PLACES=107, PETRI_TRANSITIONS=96} [2023-11-19 07:45:57,362 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, 10 predicate places. [2023-11-19 07:45:57,362 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 96 transitions, 302 flow [2023-11-19 07:45:57,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 295.3333333333333) internal successors, (886), 3 states have internal predecessors, (886), 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 07:45:57,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:57,364 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2023-11-19 07:45:57,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 07:45:57,364 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-11-19 07:45:57,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:57,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1153386262, now seen corresponding path program 1 times [2023-11-19 07:45:57,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:57,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148374261] [2023-11-19 07:45:57,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:57,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:57,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:45:57,405 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:45:57,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:45:57,435 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:45:57,435 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:45:57,436 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2023-11-19 07:45:57,436 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (21 of 23 remaining) [2023-11-19 07:45:57,436 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (20 of 23 remaining) [2023-11-19 07:45:57,436 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (19 of 23 remaining) [2023-11-19 07:45:57,437 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (18 of 23 remaining) [2023-11-19 07:45:57,437 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (17 of 23 remaining) [2023-11-19 07:45:57,437 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (16 of 23 remaining) [2023-11-19 07:45:57,437 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (15 of 23 remaining) [2023-11-19 07:45:57,437 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (14 of 23 remaining) [2023-11-19 07:45:57,438 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (13 of 23 remaining) [2023-11-19 07:45:57,438 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (12 of 23 remaining) [2023-11-19 07:45:57,438 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (11 of 23 remaining) [2023-11-19 07:45:57,438 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONDATA_RACE (10 of 23 remaining) [2023-11-19 07:45:57,438 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONDATA_RACE (9 of 23 remaining) [2023-11-19 07:45:57,439 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONDATA_RACE (8 of 23 remaining) [2023-11-19 07:45:57,439 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (7 of 23 remaining) [2023-11-19 07:45:57,439 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONDATA_RACE (6 of 23 remaining) [2023-11-19 07:45:57,439 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONDATA_RACE (5 of 23 remaining) [2023-11-19 07:45:57,440 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONDATA_RACE (4 of 23 remaining) [2023-11-19 07:45:57,440 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (3 of 23 remaining) [2023-11-19 07:45:57,440 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONDATA_RACE (2 of 23 remaining) [2023-11-19 07:45:57,440 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONDATA_RACE (1 of 23 remaining) [2023-11-19 07:45:57,440 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONDATA_RACE (0 of 23 remaining) [2023-11-19 07:45:57,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 07:45:57,441 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:57,442 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:45:57,442 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-19 07:45:57,498 INFO L144 ThreadInstanceAdder]: Constructed 15 joinOtherThreadTransitions. [2023-11-19 07:45:57,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 358 places, 394 transitions, 851 flow [2023-11-19 07:45:57,957 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1616] threadEXIT-->L1034-13: Formula: (= (let ((.cse0 (mod |v_threadThread3of3ForFork0_#t~mem11_8| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_threadThread1of3ForFork0_thidvar0_8) InVars {threadThread1of3ForFork0_thidvar0=v_threadThread1of3ForFork0_thidvar0_8, threadThread3of3ForFork0_#t~mem11=|v_threadThread3of3ForFork0_#t~mem11_8|} OutVars{threadThread1of3ForFork0_thidvar0=v_threadThread1of3ForFork0_thidvar0_8, threadThread3of3ForFork0_#t~mem11=|v_threadThread3of3ForFork0_#t~mem11_8|} AuxVars[] AssignedVars[][132], [17#L1043-10true, threadThread1of3ForFork0NotInUse, threadThread2of3ForFork0NotInUse, threadThread3of3ForFork0InUse, 121#L1034-13true]) [2023-11-19 07:45:57,958 INFO L294 olderBase$Statistics]: this new event has 271 ancestors and is cut-off event [2023-11-19 07:45:57,958 INFO L297 olderBase$Statistics]: existing Event has 203 ancestors and is cut-off event [2023-11-19 07:45:57,958 INFO L297 olderBase$Statistics]: existing Event has 271 ancestors and is cut-off event [2023-11-19 07:45:57,958 INFO L297 olderBase$Statistics]: existing Event has 203 ancestors and is cut-off event [2023-11-19 07:45:57,970 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1616] threadEXIT-->L1034-13: Formula: (= (let ((.cse0 (mod |v_threadThread3of3ForFork0_#t~mem11_8| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_threadThread1of3ForFork0_thidvar0_8) InVars {threadThread1of3ForFork0_thidvar0=v_threadThread1of3ForFork0_thidvar0_8, threadThread3of3ForFork0_#t~mem11=|v_threadThread3of3ForFork0_#t~mem11_8|} OutVars{threadThread1of3ForFork0_thidvar0=v_threadThread1of3ForFork0_thidvar0_8, threadThread3of3ForFork0_#t~mem11=|v_threadThread3of3ForFork0_#t~mem11_8|} AuxVars[] AssignedVars[][132], [17#L1043-10true, threadThread1of3ForFork0NotInUse, 44#$Ultimate##0true, threadThread2of3ForFork0InUse, threadThread3of3ForFork0InUse, 121#L1034-13true]) [2023-11-19 07:45:57,970 INFO L294 olderBase$Statistics]: this new event has 288 ancestors and is cut-off event [2023-11-19 07:45:57,970 INFO L297 olderBase$Statistics]: existing Event has 220 ancestors and is cut-off event [2023-11-19 07:45:57,971 INFO L297 olderBase$Statistics]: existing Event has 220 ancestors and is cut-off event [2023-11-19 07:45:57,971 INFO L297 olderBase$Statistics]: existing Event has 152 ancestors and is cut-off event [2023-11-19 07:45:58,051 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1624] threadEXIT-->L1034-13: Formula: (= (let ((.cse0 (mod |v_threadThread1of3ForFork0_#t~mem11_12| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_threadThread3of3ForFork0_thidvar0_12) InVars {threadThread1of3ForFork0_#t~mem11=|v_threadThread1of3ForFork0_#t~mem11_12|, threadThread3of3ForFork0_thidvar0=v_threadThread3of3ForFork0_thidvar0_12} OutVars{threadThread1of3ForFork0_#t~mem11=|v_threadThread1of3ForFork0_#t~mem11_12|, threadThread3of3ForFork0_thidvar0=v_threadThread3of3ForFork0_thidvar0_12} AuxVars[] AssignedVars[][10], [17#L1043-10true, threadThread1of3ForFork0InUse, threadThread2of3ForFork0NotInUse, threadThread3of3ForFork0NotInUse, 92#L1034-13true]) [2023-11-19 07:45:58,052 INFO L294 olderBase$Statistics]: this new event has 271 ancestors and is cut-off event [2023-11-19 07:45:58,052 INFO L297 olderBase$Statistics]: existing Event has 203 ancestors and is cut-off event [2023-11-19 07:45:58,052 INFO L297 olderBase$Statistics]: existing Event has 271 ancestors and is cut-off event [2023-11-19 07:45:58,052 INFO L297 olderBase$Statistics]: existing Event has 203 ancestors and is cut-off event [2023-11-19 07:45:58,167 INFO L124 PetriNetUnfolderBase]: 211/2030 cut-off events. [2023-11-19 07:45:58,168 INFO L125 PetriNetUnfolderBase]: For 127/131 co-relation queries the response was YES. [2023-11-19 07:45:58,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2166 conditions, 2030 events. 211/2030 cut-off events. For 127/131 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 11198 event pairs, 3 based on Foata normal form. 3/1711 useless extension candidates. Maximal degree in co-relation 968. Up to 35 conditions per place. [2023-11-19 07:45:58,227 INFO L82 GeneralOperation]: Start removeDead. Operand has 358 places, 394 transitions, 851 flow [2023-11-19 07:45:58,259 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 308 places, 332 transitions, 709 flow [2023-11-19 07:45:58,259 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:45:58,259 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 308 places, 332 transitions, 709 flow [2023-11-19 07:45:58,260 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 308 places, 332 transitions, 709 flow [2023-11-19 07:45:58,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 308 places, 332 transitions, 709 flow