./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_36-indirect_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28ee16fe-75bf-487a-a456-2eefb9285d8a/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28ee16fe-75bf-487a-a456-2eefb9285d8a/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28ee16fe-75bf-487a-a456-2eefb9285d8a/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28ee16fe-75bf-487a-a456-2eefb9285d8a/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_36-indirect_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28ee16fe-75bf-487a-a456-2eefb9285d8a/bin/uautomizer-TMbwUNV5ro/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28ee16fe-75bf-487a-a456-2eefb9285d8a/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --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 3eff698bae51c39e8a3a4c763800dbda831dabb73a169fa31c8e326faee47cd8 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 19:57:45,653 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:57:45,655 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:57:45,693 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:57:45,694 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:57:45,706 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:57:45,709 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:57:45,717 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:57:45,718 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:57:45,719 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:57:45,720 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:57:45,721 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:57:45,722 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:57:45,723 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:57:45,724 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:57:45,725 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:57:45,726 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:57:45,727 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:57:45,729 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:57:45,737 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:57:45,744 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:57:45,751 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:57:45,752 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:57:45,753 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:57:45,756 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:57:45,757 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:57:45,757 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:57:45,758 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:57:45,758 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:57:45,759 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:57:45,760 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:57:45,761 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:57:45,761 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:57:45,765 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:57:45,768 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:57:45,768 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:57:45,769 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:57:45,769 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:57:45,769 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:57:45,770 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:57:45,771 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:57:45,772 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28ee16fe-75bf-487a-a456-2eefb9285d8a/bin/uautomizer-TMbwUNV5ro/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-18 19:57:45,796 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:57:45,796 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:57:45,797 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:57:45,797 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:57:45,798 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:57:45,798 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:57:45,799 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:57:45,799 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:57:45,799 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:57:45,800 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:57:45,800 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:57:45,800 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 19:57:45,800 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:57:45,801 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:57:45,801 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:57:45,801 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:57:45,801 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:57:45,801 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:57:45,802 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-18 19:57:45,802 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:57:45,802 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:57:45,802 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:57:45,803 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:57:45,803 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:57:45,803 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:57:45,803 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:57:45,804 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:57:45,804 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:57:45,804 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:57:45,804 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:57:45,805 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:57:45,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:57:45,805 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:57:45,805 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:57:45,806 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:57:45,806 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_28ee16fe-75bf-487a-a456-2eefb9285d8a/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28ee16fe-75bf-487a-a456-2eefb9285d8a/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3eff698bae51c39e8a3a4c763800dbda831dabb73a169fa31c8e326faee47cd8 [2022-11-18 19:57:46,119 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:57:46,147 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:57:46,150 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:57:46,151 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:57:46,152 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:57:46,154 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28ee16fe-75bf-487a-a456-2eefb9285d8a/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/goblint-regression/28-race_reach_36-indirect_racefree.i [2022-11-18 19:57:46,236 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28ee16fe-75bf-487a-a456-2eefb9285d8a/bin/uautomizer-TMbwUNV5ro/data/3f1e87da5/512336de5c754d83be24baf18b987c5a/FLAG3db9bd984 [2022-11-18 19:57:46,882 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:57:46,882 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28ee16fe-75bf-487a-a456-2eefb9285d8a/sv-benchmarks/c/goblint-regression/28-race_reach_36-indirect_racefree.i [2022-11-18 19:57:46,898 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28ee16fe-75bf-487a-a456-2eefb9285d8a/bin/uautomizer-TMbwUNV5ro/data/3f1e87da5/512336de5c754d83be24baf18b987c5a/FLAG3db9bd984 [2022-11-18 19:57:47,179 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28ee16fe-75bf-487a-a456-2eefb9285d8a/bin/uautomizer-TMbwUNV5ro/data/3f1e87da5/512336de5c754d83be24baf18b987c5a [2022-11-18 19:57:47,182 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:57:47,183 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:57:47,185 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:57:47,185 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:57:47,194 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:57:47,194 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:57:47" (1/1) ... [2022-11-18 19:57:47,197 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22c9010b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:57:47, skipping insertion in model container [2022-11-18 19:57:47,197 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:57:47" (1/1) ... [2022-11-18 19:57:47,207 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:57:47,296 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:57:47,652 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28ee16fe-75bf-487a-a456-2eefb9285d8a/sv-benchmarks/c/goblint-regression/28-race_reach_36-indirect_racefree.i[30176,30189] [2022-11-18 19:57:47,708 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:57:47,726 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:57:47,790 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28ee16fe-75bf-487a-a456-2eefb9285d8a/sv-benchmarks/c/goblint-regression/28-race_reach_36-indirect_racefree.i[30176,30189] [2022-11-18 19:57:47,810 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:57:47,863 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:57:47,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:57:47 WrapperNode [2022-11-18 19:57:47,864 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:57:47,865 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:57:47,865 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:57:47,866 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:57:47,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:57:47" (1/1) ... [2022-11-18 19:57:47,909 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:57:47" (1/1) ... [2022-11-18 19:57:47,951 INFO L138 Inliner]: procedures = 170, calls = 37, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 102 [2022-11-18 19:57:47,953 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:57:47,953 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:57:47,954 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:57:47,954 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:57:47,963 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:57:47" (1/1) ... [2022-11-18 19:57:47,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:57:47" (1/1) ... [2022-11-18 19:57:47,983 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:57:47" (1/1) ... [2022-11-18 19:57:47,984 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:57:47" (1/1) ... [2022-11-18 19:57:48,003 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:57:47" (1/1) ... [2022-11-18 19:57:48,007 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:57:47" (1/1) ... [2022-11-18 19:57:48,023 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:57:47" (1/1) ... [2022-11-18 19:57:48,025 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:57:47" (1/1) ... [2022-11-18 19:57:48,028 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:57:48,029 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:57:48,029 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:57:48,029 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:57:48,030 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:57:47" (1/1) ... [2022-11-18 19:57:48,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:57:48,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28ee16fe-75bf-487a-a456-2eefb9285d8a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:57:48,076 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28ee16fe-75bf-487a-a456-2eefb9285d8a/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:57:48,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28ee16fe-75bf-487a-a456-2eefb9285d8a/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:57:48,130 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 19:57:48,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:57:48,131 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 19:57:48,131 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:57:48,131 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:57:48,133 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-18 19:57:48,133 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-18 19:57:48,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:57:48,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:57:48,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:57:48,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:57:48,135 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 19:57:48,281 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:57:48,283 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:57:48,750 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:57:48,760 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:57:48,761 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-18 19:57:48,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:57:48 BoogieIcfgContainer [2022-11-18 19:57:48,763 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:57:48,771 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:57:48,771 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:57:48,775 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:57:48,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:57:47" (1/3) ... [2022-11-18 19:57:48,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d31ea11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:57:48, skipping insertion in model container [2022-11-18 19:57:48,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:57:47" (2/3) ... [2022-11-18 19:57:48,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d31ea11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:57:48, skipping insertion in model container [2022-11-18 19:57:48,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:57:48" (3/3) ... [2022-11-18 19:57:48,779 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_36-indirect_racefree.i [2022-11-18 19:57:48,795 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 19:57:48,808 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:57:48,808 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-18 19:57:48,808 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 19:57:48,916 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-18 19:57:48,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 169 places, 178 transitions, 364 flow [2022-11-18 19:57:49,105 INFO L130 PetriNetUnfolder]: 17/230 cut-off events. [2022-11-18 19:57:49,105 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-18 19:57:49,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236 conditions, 230 events. 17/230 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 687 event pairs, 0 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 123. Up to 4 conditions per place. [2022-11-18 19:57:49,114 INFO L82 GeneralOperation]: Start removeDead. Operand has 169 places, 178 transitions, 364 flow [2022-11-18 19:57:49,124 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 169 places, 178 transitions, 364 flow [2022-11-18 19:57:49,146 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:57:49,157 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=LoopsAndPotentialCycles, 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;@58fb8123, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:57:49,157 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-11-18 19:57:49,177 INFO L130 PetriNetUnfolder]: 0/34 cut-off events. [2022-11-18 19:57:49,177 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:57:49,178 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:57:49,178 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:57:49,179 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2022-11-18 19:57:49,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:49,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1709365595, now seen corresponding path program 1 times [2022-11-18 19:57:49,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:57:49,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147012448] [2022-11-18 19:57:49,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:49,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:57:49,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:49,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:57:49,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:57:49,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147012448] [2022-11-18 19:57:49,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147012448] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:57:49,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:57:49,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:57:49,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128690334] [2022-11-18 19:57:49,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:57:49,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:57:49,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:57:49,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:57:49,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:57:49,570 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 178 [2022-11-18 19:57:49,578 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 178 transitions, 364 flow. Second operand has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:49,578 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:57:49,578 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 178 [2022-11-18 19:57:49,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:57:49,684 INFO L130 PetriNetUnfolder]: 1/211 cut-off events. [2022-11-18 19:57:49,685 INFO L131 PetriNetUnfolder]: For 4/8 co-relation queries the response was YES. [2022-11-18 19:57:49,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 211 events. 1/211 cut-off events. For 4/8 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 351 event pairs, 0 based on Foata normal form. 22/213 useless extension candidates. Maximal degree in co-relation 4. Up to 15 conditions per place. [2022-11-18 19:57:49,689 INFO L137 encePairwiseOnDemand]: 164/178 looper letters, 11 selfloop transitions, 2 changer transitions 0/165 dead transitions. [2022-11-18 19:57:49,689 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 165 transitions, 364 flow [2022-11-18 19:57:49,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:57:49,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 19:57:49,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 481 transitions. [2022-11-18 19:57:49,715 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.900749063670412 [2022-11-18 19:57:49,717 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 481 transitions. [2022-11-18 19:57:49,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 481 transitions. [2022-11-18 19:57:49,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:57:49,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 481 transitions. [2022-11-18 19:57:49,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:49,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:49,741 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:49,743 INFO L175 Difference]: Start difference. First operand has 169 places, 178 transitions, 364 flow. Second operand 3 states and 481 transitions. [2022-11-18 19:57:49,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 165 transitions, 364 flow [2022-11-18 19:57:49,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 165 transitions, 364 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:57:49,758 INFO L231 Difference]: Finished difference. Result has 169 places, 165 transitions, 342 flow [2022-11-18 19:57:49,761 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=342, PETRI_PLACES=169, PETRI_TRANSITIONS=165} [2022-11-18 19:57:49,766 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 0 predicate places. [2022-11-18 19:57:49,766 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 165 transitions, 342 flow [2022-11-18 19:57:49,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:49,767 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:57:49,768 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:57:49,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:57:49,768 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2022-11-18 19:57:49,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:49,769 INFO L85 PathProgramCache]: Analyzing trace with hash -2022816811, now seen corresponding path program 1 times [2022-11-18 19:57:49,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:57:49,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782593041] [2022-11-18 19:57:49,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:49,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:57:49,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:49,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:57:49,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:57:49,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782593041] [2022-11-18 19:57:49,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782593041] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:57:49,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:57:49,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:57:49,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780052945] [2022-11-18 19:57:49,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:57:49,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:57:49,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:57:49,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:57:49,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:57:49,891 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 178 [2022-11-18 19:57:49,892 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 165 transitions, 342 flow. Second operand has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:49,892 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:57:49,892 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 178 [2022-11-18 19:57:49,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:57:49,959 INFO L130 PetriNetUnfolder]: 1/208 cut-off events. [2022-11-18 19:57:49,959 INFO L131 PetriNetUnfolder]: For 5/8 co-relation queries the response was YES. [2022-11-18 19:57:49,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 208 events. 1/208 cut-off events. For 5/8 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 342 event pairs, 0 based on Foata normal form. 0/191 useless extension candidates. Maximal degree in co-relation 183. Up to 8 conditions per place. [2022-11-18 19:57:49,961 INFO L137 encePairwiseOnDemand]: 175/178 looper letters, 7 selfloop transitions, 1 changer transitions 0/163 dead transitions. [2022-11-18 19:57:49,961 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 163 transitions, 354 flow [2022-11-18 19:57:49,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:57:49,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 19:57:49,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 475 transitions. [2022-11-18 19:57:49,964 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8895131086142322 [2022-11-18 19:57:49,964 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 475 transitions. [2022-11-18 19:57:49,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 475 transitions. [2022-11-18 19:57:49,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:57:49,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 475 transitions. [2022-11-18 19:57:49,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:49,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:49,969 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:49,970 INFO L175 Difference]: Start difference. First operand has 169 places, 165 transitions, 342 flow. Second operand 3 states and 475 transitions. [2022-11-18 19:57:49,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 163 transitions, 354 flow [2022-11-18 19:57:49,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 163 transitions, 350 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 19:57:49,977 INFO L231 Difference]: Finished difference. Result has 167 places, 163 transitions, 336 flow [2022-11-18 19:57:49,977 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=336, PETRI_PLACES=167, PETRI_TRANSITIONS=163} [2022-11-18 19:57:49,978 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, -2 predicate places. [2022-11-18 19:57:49,978 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 163 transitions, 336 flow [2022-11-18 19:57:49,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:49,979 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:57:49,979 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:57:49,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:57:49,981 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2022-11-18 19:57:49,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:49,982 INFO L85 PathProgramCache]: Analyzing trace with hash -587049752, now seen corresponding path program 1 times [2022-11-18 19:57:49,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:57:49,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69460106] [2022-11-18 19:57:49,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:49,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:57:50,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:50,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:57:50,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:57:50,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69460106] [2022-11-18 19:57:50,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69460106] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:57:50,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:57:50,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:57:50,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474193154] [2022-11-18 19:57:50,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:57:50,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:57:50,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:57:50,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:57:50,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:57:50,077 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 178 [2022-11-18 19:57:50,078 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 163 transitions, 336 flow. Second operand has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:50,078 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:57:50,078 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 178 [2022-11-18 19:57:50,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:57:50,159 INFO L130 PetriNetUnfolder]: 1/207 cut-off events. [2022-11-18 19:57:50,159 INFO L131 PetriNetUnfolder]: For 5/6 co-relation queries the response was YES. [2022-11-18 19:57:50,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229 conditions, 207 events. 1/207 cut-off events. For 5/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 341 event pairs, 0 based on Foata normal form. 0/191 useless extension candidates. Maximal degree in co-relation 187. Up to 12 conditions per place. [2022-11-18 19:57:50,160 INFO L137 encePairwiseOnDemand]: 175/178 looper letters, 11 selfloop transitions, 2 changer transitions 0/162 dead transitions. [2022-11-18 19:57:50,161 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 162 transitions, 360 flow [2022-11-18 19:57:50,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:57:50,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 19:57:50,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 470 transitions. [2022-11-18 19:57:50,164 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8801498127340824 [2022-11-18 19:57:50,164 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 470 transitions. [2022-11-18 19:57:50,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 470 transitions. [2022-11-18 19:57:50,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:57:50,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 470 transitions. [2022-11-18 19:57:50,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:50,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:50,170 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:50,170 INFO L175 Difference]: Start difference. First operand has 167 places, 163 transitions, 336 flow. Second operand 3 states and 470 transitions. [2022-11-18 19:57:50,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 162 transitions, 360 flow [2022-11-18 19:57:50,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 162 transitions, 359 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:57:50,177 INFO L231 Difference]: Finished difference. Result has 167 places, 162 transitions, 337 flow [2022-11-18 19:57:50,178 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=337, PETRI_PLACES=167, PETRI_TRANSITIONS=162} [2022-11-18 19:57:50,180 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, -2 predicate places. [2022-11-18 19:57:50,180 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 162 transitions, 337 flow [2022-11-18 19:57:50,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:50,181 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:57:50,181 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:57:50,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 19:57:50,182 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2022-11-18 19:57:50,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:50,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1769988183, now seen corresponding path program 1 times [2022-11-18 19:57:50,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:57:50,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940455022] [2022-11-18 19:57:50,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:50,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:57:50,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:50,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:57:50,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:57:50,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940455022] [2022-11-18 19:57:50,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940455022] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:57:50,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:57:50,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:57:50,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718298257] [2022-11-18 19:57:50,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:57:50,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:57:50,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:57:50,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:57:50,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:57:50,305 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 178 [2022-11-18 19:57:50,305 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 162 transitions, 337 flow. Second operand has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:50,306 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:57:50,306 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 178 [2022-11-18 19:57:50,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:57:50,365 INFO L130 PetriNetUnfolder]: 0/220 cut-off events. [2022-11-18 19:57:50,365 INFO L131 PetriNetUnfolder]: For 6/7 co-relation queries the response was YES. [2022-11-18 19:57:50,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 220 events. 0/220 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 343 event pairs, 0 based on Foata normal form. 0/204 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2022-11-18 19:57:50,366 INFO L137 encePairwiseOnDemand]: 175/178 looper letters, 7 selfloop transitions, 1 changer transitions 0/160 dead transitions. [2022-11-18 19:57:50,366 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 160 transitions, 349 flow [2022-11-18 19:57:50,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:57:50,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 19:57:50,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 475 transitions. [2022-11-18 19:57:50,369 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8895131086142322 [2022-11-18 19:57:50,369 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 475 transitions. [2022-11-18 19:57:50,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 475 transitions. [2022-11-18 19:57:50,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:57:50,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 475 transitions. [2022-11-18 19:57:50,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:50,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:50,378 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:50,378 INFO L175 Difference]: Start difference. First operand has 167 places, 162 transitions, 337 flow. Second operand 3 states and 475 transitions. [2022-11-18 19:57:50,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 160 transitions, 349 flow [2022-11-18 19:57:50,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 160 transitions, 345 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 19:57:50,382 INFO L231 Difference]: Finished difference. Result has 165 places, 160 transitions, 331 flow [2022-11-18 19:57:50,383 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=331, PETRI_PLACES=165, PETRI_TRANSITIONS=160} [2022-11-18 19:57:50,385 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, -4 predicate places. [2022-11-18 19:57:50,386 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 160 transitions, 331 flow [2022-11-18 19:57:50,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:50,391 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:57:50,392 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:57:50,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 19:57:50,393 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2022-11-18 19:57:50,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:50,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1145819620, now seen corresponding path program 1 times [2022-11-18 19:57:50,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:57:50,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598455206] [2022-11-18 19:57:50,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:50,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:57:50,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:50,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:57:50,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:57:50,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598455206] [2022-11-18 19:57:50,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598455206] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:57:50,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:57:50,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:57:50,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248011591] [2022-11-18 19:57:50,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:57:50,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:57:50,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:57:50,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:57:50,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:57:50,529 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 178 [2022-11-18 19:57:50,530 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 160 transitions, 331 flow. Second operand has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 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) [2022-11-18 19:57:50,531 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:57:50,531 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 178 [2022-11-18 19:57:50,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:57:50,573 INFO L130 PetriNetUnfolder]: 0/179 cut-off events. [2022-11-18 19:57:50,574 INFO L131 PetriNetUnfolder]: For 3/9 co-relation queries the response was YES. [2022-11-18 19:57:50,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 179 events. 0/179 cut-off events. For 3/9 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 151 event pairs, 0 based on Foata normal form. 1/169 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2022-11-18 19:57:50,575 INFO L137 encePairwiseOnDemand]: 175/178 looper letters, 9 selfloop transitions, 2 changer transitions 0/162 dead transitions. [2022-11-18 19:57:50,575 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 162 transitions, 357 flow [2022-11-18 19:57:50,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:57:50,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 19:57:50,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 483 transitions. [2022-11-18 19:57:50,577 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9044943820224719 [2022-11-18 19:57:50,577 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 483 transitions. [2022-11-18 19:57:50,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 483 transitions. [2022-11-18 19:57:50,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:57:50,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 483 transitions. [2022-11-18 19:57:50,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:50,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:50,582 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:50,582 INFO L175 Difference]: Start difference. First operand has 165 places, 160 transitions, 331 flow. Second operand 3 states and 483 transitions. [2022-11-18 19:57:50,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 162 transitions, 357 flow [2022-11-18 19:57:50,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 162 transitions, 356 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:57:50,586 INFO L231 Difference]: Finished difference. Result has 167 places, 160 transitions, 338 flow [2022-11-18 19:57:50,587 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=338, PETRI_PLACES=167, PETRI_TRANSITIONS=160} [2022-11-18 19:57:50,588 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, -2 predicate places. [2022-11-18 19:57:50,588 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 160 transitions, 338 flow [2022-11-18 19:57:50,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 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) [2022-11-18 19:57:50,589 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:57:50,589 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:57:50,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 19:57:50,590 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2022-11-18 19:57:50,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:50,590 INFO L85 PathProgramCache]: Analyzing trace with hash 640897414, now seen corresponding path program 1 times [2022-11-18 19:57:50,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:57:50,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743870920] [2022-11-18 19:57:50,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:50,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:57:50,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:57:50,614 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 19:57:50,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:57:50,675 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 19:57:50,675 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 19:57:50,677 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2022-11-18 19:57:50,679 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (17 of 19 remaining) [2022-11-18 19:57:50,680 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 19 remaining) [2022-11-18 19:57:50,680 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (15 of 19 remaining) [2022-11-18 19:57:50,680 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (14 of 19 remaining) [2022-11-18 19:57:50,681 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (13 of 19 remaining) [2022-11-18 19:57:50,681 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (12 of 19 remaining) [2022-11-18 19:57:50,681 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 19 remaining) [2022-11-18 19:57:50,682 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 19 remaining) [2022-11-18 19:57:50,683 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 19 remaining) [2022-11-18 19:57:50,683 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (8 of 19 remaining) [2022-11-18 19:57:50,685 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 19 remaining) [2022-11-18 19:57:50,685 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (6 of 19 remaining) [2022-11-18 19:57:50,691 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 19 remaining) [2022-11-18 19:57:50,691 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 19 remaining) [2022-11-18 19:57:50,692 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 19 remaining) [2022-11-18 19:57:50,692 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 19 remaining) [2022-11-18 19:57:50,692 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 19 remaining) [2022-11-18 19:57:50,692 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 19 remaining) [2022-11-18 19:57:50,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 19:57:50,693 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-18 19:57:50,697 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 19:57:50,698 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-18 19:57:50,768 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 19:57:50,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 232 places, 246 transitions, 510 flow [2022-11-18 19:57:50,882 INFO L130 PetriNetUnfolder]: 31/381 cut-off events. [2022-11-18 19:57:50,882 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-18 19:57:50,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 395 conditions, 381 events. 31/381 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1471 event pairs, 0 based on Foata normal form. 0/321 useless extension candidates. Maximal degree in co-relation 232. Up to 8 conditions per place. [2022-11-18 19:57:50,891 INFO L82 GeneralOperation]: Start removeDead. Operand has 232 places, 246 transitions, 510 flow [2022-11-18 19:57:50,897 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 232 places, 246 transitions, 510 flow [2022-11-18 19:57:50,899 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:57:50,900 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=LoopsAndPotentialCycles, 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;@58fb8123, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:57:50,901 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-11-18 19:57:50,906 INFO L130 PetriNetUnfolder]: 0/34 cut-off events. [2022-11-18 19:57:50,906 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:57:50,906 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:57:50,906 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:57:50,907 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-18 19:57:50,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:50,907 INFO L85 PathProgramCache]: Analyzing trace with hash -2037779237, now seen corresponding path program 1 times [2022-11-18 19:57:50,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:57:50,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530445620] [2022-11-18 19:57:50,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:50,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:57:50,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:50,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:57:50,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:57:50,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530445620] [2022-11-18 19:57:50,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530445620] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:57:50,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:57:50,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:57:50,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746206328] [2022-11-18 19:57:50,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:57:50,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:57:50,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:57:50,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:57:50,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:57:50,964 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 246 [2022-11-18 19:57:50,966 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 246 transitions, 510 flow. Second operand has 3 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:50,966 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:57:50,967 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 246 [2022-11-18 19:57:50,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:57:51,082 INFO L130 PetriNetUnfolder]: 3/349 cut-off events. [2022-11-18 19:57:51,082 INFO L131 PetriNetUnfolder]: For 28/66 co-relation queries the response was YES. [2022-11-18 19:57:51,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 387 conditions, 349 events. 3/349 cut-off events. For 28/66 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 962 event pairs, 0 based on Foata normal form. 60/374 useless extension candidates. Maximal degree in co-relation 229. Up to 22 conditions per place. [2022-11-18 19:57:51,086 INFO L137 encePairwiseOnDemand]: 226/246 looper letters, 13 selfloop transitions, 2 changer transitions 0/227 dead transitions. [2022-11-18 19:57:51,086 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 227 transitions, 502 flow [2022-11-18 19:57:51,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:57:51,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 19:57:51,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 669 transitions. [2022-11-18 19:57:51,089 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9065040650406504 [2022-11-18 19:57:51,089 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 669 transitions. [2022-11-18 19:57:51,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 669 transitions. [2022-11-18 19:57:51,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:57:51,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 669 transitions. [2022-11-18 19:57:51,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 223.0) internal successors, (669), 3 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:51,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:51,094 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:51,095 INFO L175 Difference]: Start difference. First operand has 232 places, 246 transitions, 510 flow. Second operand 3 states and 669 transitions. [2022-11-18 19:57:51,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 227 transitions, 502 flow [2022-11-18 19:57:51,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 227 transitions, 502 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:57:51,100 INFO L231 Difference]: Finished difference. Result has 232 places, 227 transitions, 476 flow [2022-11-18 19:57:51,101 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=476, PETRI_PLACES=232, PETRI_TRANSITIONS=227} [2022-11-18 19:57:51,102 INFO L288 CegarLoopForPetriNet]: 232 programPoint places, 0 predicate places. [2022-11-18 19:57:51,103 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 227 transitions, 476 flow [2022-11-18 19:57:51,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:51,104 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:57:51,104 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:57:51,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 19:57:51,104 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-18 19:57:51,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:51,105 INFO L85 PathProgramCache]: Analyzing trace with hash 199261003, now seen corresponding path program 1 times [2022-11-18 19:57:51,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:57:51,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230120767] [2022-11-18 19:57:51,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:51,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:57:51,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:51,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:57:51,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:57:51,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230120767] [2022-11-18 19:57:51,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230120767] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:57:51,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:57:51,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:57:51,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619537149] [2022-11-18 19:57:51,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:57:51,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:57:51,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:57:51,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:57:51,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:57:51,150 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 246 [2022-11-18 19:57:51,152 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 227 transitions, 476 flow. Second operand has 3 states, 3 states have (on average 216.33333333333334) internal successors, (649), 3 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:51,152 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:57:51,152 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 246 [2022-11-18 19:57:51,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:57:51,263 INFO L130 PetriNetUnfolder]: 3/345 cut-off events. [2022-11-18 19:57:51,263 INFO L131 PetriNetUnfolder]: For 26/54 co-relation queries the response was YES. [2022-11-18 19:57:51,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 345 events. 3/345 cut-off events. For 26/54 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 956 event pairs, 0 based on Foata normal form. 0/314 useless extension candidates. Maximal degree in co-relation 333. Up to 14 conditions per place. [2022-11-18 19:57:51,266 INFO L137 encePairwiseOnDemand]: 243/246 looper letters, 9 selfloop transitions, 1 changer transitions 0/225 dead transitions. [2022-11-18 19:57:51,266 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 225 transitions, 492 flow [2022-11-18 19:57:51,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:57:51,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 19:57:51,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 657 transitions. [2022-11-18 19:57:51,269 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8902439024390244 [2022-11-18 19:57:51,269 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 657 transitions. [2022-11-18 19:57:51,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 657 transitions. [2022-11-18 19:57:51,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:57:51,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 657 transitions. [2022-11-18 19:57:51,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 219.0) internal successors, (657), 3 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:51,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:51,275 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:51,275 INFO L175 Difference]: Start difference. First operand has 232 places, 227 transitions, 476 flow. Second operand 3 states and 657 transitions. [2022-11-18 19:57:51,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 225 transitions, 492 flow [2022-11-18 19:57:51,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 225 transitions, 488 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 19:57:51,281 INFO L231 Difference]: Finished difference. Result has 230 places, 225 transitions, 470 flow [2022-11-18 19:57:51,282 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=470, PETRI_PLACES=230, PETRI_TRANSITIONS=225} [2022-11-18 19:57:51,282 INFO L288 CegarLoopForPetriNet]: 232 programPoint places, -2 predicate places. [2022-11-18 19:57:51,283 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 225 transitions, 470 flow [2022-11-18 19:57:51,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 216.33333333333334) internal successors, (649), 3 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:51,283 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:57:51,283 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:57:51,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 19:57:51,284 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-18 19:57:51,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:51,285 INFO L85 PathProgramCache]: Analyzing trace with hash -428642594, now seen corresponding path program 1 times [2022-11-18 19:57:51,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:57:51,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250659343] [2022-11-18 19:57:51,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:51,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:57:51,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:51,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:57:51,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:57:51,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250659343] [2022-11-18 19:57:51,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250659343] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:57:51,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:57:51,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:57:51,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003543674] [2022-11-18 19:57:51,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:57:51,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:57:51,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:57:51,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:57:51,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:57:51,320 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 246 [2022-11-18 19:57:51,321 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 225 transitions, 470 flow. Second operand has 3 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:51,321 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:57:51,322 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 246 [2022-11-18 19:57:51,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:57:51,641 INFO L130 PetriNetUnfolder]: 58/1081 cut-off events. [2022-11-18 19:57:51,641 INFO L131 PetriNetUnfolder]: For 102/116 co-relation queries the response was YES. [2022-11-18 19:57:51,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1261 conditions, 1081 events. 58/1081 cut-off events. For 102/116 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 6151 event pairs, 54 based on Foata normal form. 0/957 useless extension candidates. Maximal degree in co-relation 1218. Up to 131 conditions per place. [2022-11-18 19:57:51,655 INFO L137 encePairwiseOnDemand]: 243/246 looper letters, 19 selfloop transitions, 2 changer transitions 0/224 dead transitions. [2022-11-18 19:57:51,656 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 224 transitions, 510 flow [2022-11-18 19:57:51,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:57:51,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 19:57:51,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 640 transitions. [2022-11-18 19:57:51,658 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8672086720867209 [2022-11-18 19:57:51,658 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 640 transitions. [2022-11-18 19:57:51,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 640 transitions. [2022-11-18 19:57:51,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:57:51,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 640 transitions. [2022-11-18 19:57:51,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:51,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:51,716 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:51,716 INFO L175 Difference]: Start difference. First operand has 230 places, 225 transitions, 470 flow. Second operand 3 states and 640 transitions. [2022-11-18 19:57:51,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 224 transitions, 510 flow [2022-11-18 19:57:51,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 224 transitions, 509 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:57:51,721 INFO L231 Difference]: Finished difference. Result has 230 places, 224 transitions, 471 flow [2022-11-18 19:57:51,721 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=471, PETRI_PLACES=230, PETRI_TRANSITIONS=224} [2022-11-18 19:57:51,724 INFO L288 CegarLoopForPetriNet]: 232 programPoint places, -2 predicate places. [2022-11-18 19:57:51,725 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 224 transitions, 471 flow [2022-11-18 19:57:51,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:51,725 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:57:51,725 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:57:51,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 19:57:51,726 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-18 19:57:51,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:51,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1836000679, now seen corresponding path program 1 times [2022-11-18 19:57:51,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:57:51,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421609576] [2022-11-18 19:57:51,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:51,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:57:51,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:51,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:57:51,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:57:51,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421609576] [2022-11-18 19:57:51,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421609576] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:57:51,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:57:51,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:57:51,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722800675] [2022-11-18 19:57:51,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:57:51,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:57:51,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:57:51,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:57:51,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:57:51,777 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 246 [2022-11-18 19:57:51,778 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 224 transitions, 471 flow. Second operand has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:51,778 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:57:51,778 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 246 [2022-11-18 19:57:51,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:57:51,996 INFO L130 PetriNetUnfolder]: 30/900 cut-off events. [2022-11-18 19:57:51,996 INFO L131 PetriNetUnfolder]: For 77/87 co-relation queries the response was YES. [2022-11-18 19:57:52,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1013 conditions, 900 events. 30/900 cut-off events. For 77/87 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 4597 event pairs, 19 based on Foata normal form. 0/825 useless extension candidates. Maximal degree in co-relation 971. Up to 69 conditions per place. [2022-11-18 19:57:52,007 INFO L137 encePairwiseOnDemand]: 240/246 looper letters, 15 selfloop transitions, 2 changer transitions 0/223 dead transitions. [2022-11-18 19:57:52,008 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 223 transitions, 508 flow [2022-11-18 19:57:52,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:57:52,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 19:57:52,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 648 transitions. [2022-11-18 19:57:52,010 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8780487804878049 [2022-11-18 19:57:52,011 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 648 transitions. [2022-11-18 19:57:52,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 648 transitions. [2022-11-18 19:57:52,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:57:52,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 648 transitions. [2022-11-18 19:57:52,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 216.0) internal successors, (648), 3 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:52,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:52,015 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:52,015 INFO L175 Difference]: Start difference. First operand has 230 places, 224 transitions, 471 flow. Second operand 3 states and 648 transitions. [2022-11-18 19:57:52,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 223 transitions, 508 flow [2022-11-18 19:57:52,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 223 transitions, 504 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 19:57:52,021 INFO L231 Difference]: Finished difference. Result has 227 places, 222 transitions, 473 flow [2022-11-18 19:57:52,022 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=473, PETRI_PLACES=227, PETRI_TRANSITIONS=222} [2022-11-18 19:57:52,022 INFO L288 CegarLoopForPetriNet]: 232 programPoint places, -5 predicate places. [2022-11-18 19:57:52,023 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 222 transitions, 473 flow [2022-11-18 19:57:52,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:52,023 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:57:52,024 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:57:52,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 19:57:52,024 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-18 19:57:52,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:52,026 INFO L85 PathProgramCache]: Analyzing trace with hash 867708324, now seen corresponding path program 1 times [2022-11-18 19:57:52,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:57:52,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784707918] [2022-11-18 19:57:52,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:52,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:57:52,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:52,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:57:52,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:57:52,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784707918] [2022-11-18 19:57:52,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784707918] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:57:52,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:57:52,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:57:52,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613513537] [2022-11-18 19:57:52,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:57:52,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:57:52,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:57:52,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:57:52,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:57:52,120 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 246 [2022-11-18 19:57:52,120 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 222 transitions, 473 flow. Second operand has 3 states, 3 states have (on average 218.0) internal successors, (654), 3 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:52,121 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:57:52,121 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 246 [2022-11-18 19:57:52,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:57:52,230 INFO L130 PetriNetUnfolder]: 3/403 cut-off events. [2022-11-18 19:57:52,231 INFO L131 PetriNetUnfolder]: For 43/112 co-relation queries the response was YES. [2022-11-18 19:57:52,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 450 conditions, 403 events. 3/403 cut-off events. For 43/112 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1241 event pairs, 0 based on Foata normal form. 1/373 useless extension candidates. Maximal degree in co-relation 407. Up to 18 conditions per place. [2022-11-18 19:57:52,234 INFO L137 encePairwiseOnDemand]: 243/246 looper letters, 13 selfloop transitions, 2 changer transitions 0/226 dead transitions. [2022-11-18 19:57:52,235 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 226 transitions, 511 flow [2022-11-18 19:57:52,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:57:52,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 19:57:52,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 667 transitions. [2022-11-18 19:57:52,237 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9037940379403794 [2022-11-18 19:57:52,237 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 667 transitions. [2022-11-18 19:57:52,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 667 transitions. [2022-11-18 19:57:52,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:57:52,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 667 transitions. [2022-11-18 19:57:52,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 222.33333333333334) internal successors, (667), 3 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:52,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:52,242 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:52,242 INFO L175 Difference]: Start difference. First operand has 227 places, 222 transitions, 473 flow. Second operand 3 states and 667 transitions. [2022-11-18 19:57:52,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 226 transitions, 511 flow [2022-11-18 19:57:52,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 226 transitions, 511 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:57:52,247 INFO L231 Difference]: Finished difference. Result has 230 places, 223 transitions, 485 flow [2022-11-18 19:57:52,248 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=485, PETRI_PLACES=230, PETRI_TRANSITIONS=223} [2022-11-18 19:57:52,249 INFO L288 CegarLoopForPetriNet]: 232 programPoint places, -2 predicate places. [2022-11-18 19:57:52,249 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 223 transitions, 485 flow [2022-11-18 19:57:52,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 218.0) internal successors, (654), 3 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:52,250 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:57:52,250 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:57:52,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 19:57:52,250 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-18 19:57:52,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:52,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1298422943, now seen corresponding path program 1 times [2022-11-18 19:57:52,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:57:52,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181750075] [2022-11-18 19:57:52,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:52,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:57:52,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:52,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:57:52,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:57:52,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181750075] [2022-11-18 19:57:52,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181750075] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:57:52,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:57:52,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:57:52,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205166806] [2022-11-18 19:57:52,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:57:52,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:57:52,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:57:52,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:57:52,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:57:52,617 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 246 [2022-11-18 19:57:52,619 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 223 transitions, 485 flow. Second operand has 6 states, 6 states have (on average 155.5) internal successors, (933), 6 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:52,619 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:57:52,619 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 246 [2022-11-18 19:57:52,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:58:05,037 INFO L130 PetriNetUnfolder]: 40125/79221 cut-off events. [2022-11-18 19:58:05,038 INFO L131 PetriNetUnfolder]: For 387/387 co-relation queries the response was YES. [2022-11-18 19:58:05,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141948 conditions, 79221 events. 40125/79221 cut-off events. For 387/387 co-relation queries the response was YES. Maximal size of possible extension queue 1674. Compared 798255 event pairs, 11389 based on Foata normal form. 0/69269 useless extension candidates. Maximal degree in co-relation 141903. Up to 23722 conditions per place. [2022-11-18 19:58:05,815 INFO L137 encePairwiseOnDemand]: 202/246 looper letters, 270 selfloop transitions, 84 changer transitions 0/503 dead transitions. [2022-11-18 19:58:05,816 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 503 transitions, 1797 flow [2022-11-18 19:58:05,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:58:05,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 19:58:05,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1282 transitions. [2022-11-18 19:58:05,820 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8685636856368564 [2022-11-18 19:58:05,820 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1282 transitions. [2022-11-18 19:58:05,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1282 transitions. [2022-11-18 19:58:05,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:58:05,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1282 transitions. [2022-11-18 19:58:05,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 213.66666666666666) internal successors, (1282), 6 states have internal predecessors, (1282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:05,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 246.0) internal successors, (1722), 7 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:05,828 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 246.0) internal successors, (1722), 7 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:05,828 INFO L175 Difference]: Start difference. First operand has 230 places, 223 transitions, 485 flow. Second operand 6 states and 1282 transitions. [2022-11-18 19:58:05,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 503 transitions, 1797 flow [2022-11-18 19:58:05,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 503 transitions, 1795 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:58:05,845 INFO L231 Difference]: Finished difference. Result has 239 places, 315 transitions, 1115 flow [2022-11-18 19:58:05,846 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=483, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1115, PETRI_PLACES=239, PETRI_TRANSITIONS=315} [2022-11-18 19:58:05,847 INFO L288 CegarLoopForPetriNet]: 232 programPoint places, 7 predicate places. [2022-11-18 19:58:05,848 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 315 transitions, 1115 flow [2022-11-18 19:58:05,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 155.5) internal successors, (933), 6 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:05,849 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:58:05,849 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:05,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 19:58:05,849 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-18 19:58:05,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:05,850 INFO L85 PathProgramCache]: Analyzing trace with hash 34687424, now seen corresponding path program 1 times [2022-11-18 19:58:05,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:05,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234934800] [2022-11-18 19:58:05,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:05,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:05,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:05,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:58:05,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:05,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234934800] [2022-11-18 19:58:05,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234934800] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:58:05,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593350546] [2022-11-18 19:58:05,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:05,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:58:05,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28ee16fe-75bf-487a-a456-2eefb9285d8a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:58:05,966 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28ee16fe-75bf-487a-a456-2eefb9285d8a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:58:05,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28ee16fe-75bf-487a-a456-2eefb9285d8a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:58:06,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:06,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 19:58:06,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:58:06,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:58:06,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:58:06,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:58:06,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593350546] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:58:06,292 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:58:06,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-18 19:58:06,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274698676] [2022-11-18 19:58:06,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:58:06,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 19:58:06,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:06,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 19:58:06,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:58:06,296 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 246 [2022-11-18 19:58:06,298 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 315 transitions, 1115 flow. Second operand has 10 states, 10 states have (on average 218.3) internal successors, (2183), 10 states have internal predecessors, (2183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:06,299 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:58:06,299 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 246 [2022-11-18 19:58:06,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:58:06,862 INFO L130 PetriNetUnfolder]: 536/2861 cut-off events. [2022-11-18 19:58:06,863 INFO L131 PetriNetUnfolder]: For 452/531 co-relation queries the response was YES. [2022-11-18 19:58:06,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5148 conditions, 2861 events. 536/2861 cut-off events. For 452/531 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 22815 event pairs, 126 based on Foata normal form. 14/2809 useless extension candidates. Maximal degree in co-relation 5099. Up to 488 conditions per place. [2022-11-18 19:58:06,895 INFO L137 encePairwiseOnDemand]: 241/246 looper letters, 9 selfloop transitions, 7 changer transitions 0/274 dead transitions. [2022-11-18 19:58:06,896 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 274 transitions, 1057 flow [2022-11-18 19:58:06,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:58:06,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 19:58:06,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1962 transitions. [2022-11-18 19:58:06,900 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8861788617886179 [2022-11-18 19:58:06,901 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1962 transitions. [2022-11-18 19:58:06,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1962 transitions. [2022-11-18 19:58:06,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:58:06,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1962 transitions. [2022-11-18 19:58:06,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 218.0) internal successors, (1962), 9 states have internal predecessors, (1962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:06,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 246.0) internal successors, (2460), 10 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:06,911 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 246.0) internal successors, (2460), 10 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:06,912 INFO L175 Difference]: Start difference. First operand has 239 places, 315 transitions, 1115 flow. Second operand 9 states and 1962 transitions. [2022-11-18 19:58:06,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 274 transitions, 1057 flow [2022-11-18 19:58:06,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 274 transitions, 1055 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-11-18 19:58:06,920 INFO L231 Difference]: Finished difference. Result has 202 places, 270 transitions, 1029 flow [2022-11-18 19:58:06,921 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=1011, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1029, PETRI_PLACES=202, PETRI_TRANSITIONS=270} [2022-11-18 19:58:06,922 INFO L288 CegarLoopForPetriNet]: 232 programPoint places, -30 predicate places. [2022-11-18 19:58:06,922 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 270 transitions, 1029 flow [2022-11-18 19:58:06,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 218.3) internal successors, (2183), 10 states have internal predecessors, (2183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:06,923 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:58:06,924 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:06,939 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28ee16fe-75bf-487a-a456-2eefb9285d8a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-18 19:58:07,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28ee16fe-75bf-487a-a456-2eefb9285d8a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:58:07,129 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-18 19:58:07,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:07,129 INFO L85 PathProgramCache]: Analyzing trace with hash -2141902361, now seen corresponding path program 1 times [2022-11-18 19:58:07,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:07,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813132672] [2022-11-18 19:58:07,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:07,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:07,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:58:07,157 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 19:58:07,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:58:07,191 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 19:58:07,191 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 19:58:07,192 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2022-11-18 19:58:07,192 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (23 of 25 remaining) [2022-11-18 19:58:07,192 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (22 of 25 remaining) [2022-11-18 19:58:07,192 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (21 of 25 remaining) [2022-11-18 19:58:07,192 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (20 of 25 remaining) [2022-11-18 19:58:07,193 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (19 of 25 remaining) [2022-11-18 19:58:07,193 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (18 of 25 remaining) [2022-11-18 19:58:07,193 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (17 of 25 remaining) [2022-11-18 19:58:07,193 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (16 of 25 remaining) [2022-11-18 19:58:07,193 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (15 of 25 remaining) [2022-11-18 19:58:07,194 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 25 remaining) [2022-11-18 19:58:07,194 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (13 of 25 remaining) [2022-11-18 19:58:07,194 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (12 of 25 remaining) [2022-11-18 19:58:07,194 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 25 remaining) [2022-11-18 19:58:07,194 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 25 remaining) [2022-11-18 19:58:07,195 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 25 remaining) [2022-11-18 19:58:07,195 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (8 of 25 remaining) [2022-11-18 19:58:07,195 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 25 remaining) [2022-11-18 19:58:07,195 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (6 of 25 remaining) [2022-11-18 19:58:07,195 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 25 remaining) [2022-11-18 19:58:07,196 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 25 remaining) [2022-11-18 19:58:07,196 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 25 remaining) [2022-11-18 19:58:07,196 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 25 remaining) [2022-11-18 19:58:07,196 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 25 remaining) [2022-11-18 19:58:07,196 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 25 remaining) [2022-11-18 19:58:07,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 19:58:07,197 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:07,198 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 19:58:07,198 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-18 19:58:07,248 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 19:58:07,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 295 places, 314 transitions, 658 flow [2022-11-18 19:58:07,350 INFO L130 PetriNetUnfolder]: 50/577 cut-off events. [2022-11-18 19:58:07,351 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-18 19:58:07,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 605 conditions, 577 events. 50/577 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2518 event pairs, 1 based on Foata normal form. 0/486 useless extension candidates. Maximal degree in co-relation 389. Up to 16 conditions per place. [2022-11-18 19:58:07,360 INFO L82 GeneralOperation]: Start removeDead. Operand has 295 places, 314 transitions, 658 flow [2022-11-18 19:58:07,368 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 295 places, 314 transitions, 658 flow [2022-11-18 19:58:07,370 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:58:07,370 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=LoopsAndPotentialCycles, 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;@58fb8123, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:58:07,370 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2022-11-18 19:58:07,372 INFO L130 PetriNetUnfolder]: 0/34 cut-off events. [2022-11-18 19:58:07,373 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:58:07,373 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:58:07,373 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:07,373 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2022-11-18 19:58:07,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:07,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1095154987, now seen corresponding path program 1 times [2022-11-18 19:58:07,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:07,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732832115] [2022-11-18 19:58:07,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:07,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:07,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:07,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:58:07,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:07,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732832115] [2022-11-18 19:58:07,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732832115] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:58:07,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:58:07,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:58:07,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115053524] [2022-11-18 19:58:07,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:58:07,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:58:07,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:07,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:58:07,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:58:07,403 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 314 [2022-11-18 19:58:07,404 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 314 transitions, 658 flow. Second operand has 3 states, 3 states have (on average 273.3333333333333) internal successors, (820), 3 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:07,404 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:58:07,404 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 314 [2022-11-18 19:58:07,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:58:07,625 INFO L130 PetriNetUnfolder]: 8/530 cut-off events. [2022-11-18 19:58:07,625 INFO L131 PetriNetUnfolder]: For 71/168 co-relation queries the response was YES. [2022-11-18 19:58:07,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 594 conditions, 530 events. 8/530 cut-off events. For 71/168 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1944 event pairs, 1 based on Foata normal form. 144/620 useless extension candidates. Maximal degree in co-relation 380. Up to 34 conditions per place. [2022-11-18 19:58:07,632 INFO L137 encePairwiseOnDemand]: 288/314 looper letters, 15 selfloop transitions, 2 changer transitions 0/289 dead transitions. [2022-11-18 19:58:07,633 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 289 transitions, 642 flow [2022-11-18 19:58:07,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:58:07,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 19:58:07,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 857 transitions. [2022-11-18 19:58:07,635 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9097664543524416 [2022-11-18 19:58:07,636 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 857 transitions. [2022-11-18 19:58:07,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 857 transitions. [2022-11-18 19:58:07,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:58:07,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 857 transitions. [2022-11-18 19:58:07,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 285.6666666666667) internal successors, (857), 3 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:07,641 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:07,642 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:07,642 INFO L175 Difference]: Start difference. First operand has 295 places, 314 transitions, 658 flow. Second operand 3 states and 857 transitions. [2022-11-18 19:58:07,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 289 transitions, 642 flow [2022-11-18 19:58:07,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 289 transitions, 642 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:58:07,647 INFO L231 Difference]: Finished difference. Result has 295 places, 289 transitions, 612 flow [2022-11-18 19:58:07,648 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=608, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=612, PETRI_PLACES=295, PETRI_TRANSITIONS=289} [2022-11-18 19:58:07,649 INFO L288 CegarLoopForPetriNet]: 295 programPoint places, 0 predicate places. [2022-11-18 19:58:07,649 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 289 transitions, 612 flow [2022-11-18 19:58:07,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 273.3333333333333) internal successors, (820), 3 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:07,650 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:58:07,650 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:07,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 19:58:07,650 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2022-11-18 19:58:07,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:07,651 INFO L85 PathProgramCache]: Analyzing trace with hash -176924155, now seen corresponding path program 1 times [2022-11-18 19:58:07,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:07,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218138588] [2022-11-18 19:58:07,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:07,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:07,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:07,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:58:07,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:07,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218138588] [2022-11-18 19:58:07,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218138588] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:58:07,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:58:07,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:58:07,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648100097] [2022-11-18 19:58:07,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:58:07,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:58:07,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:07,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:58:07,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:58:07,703 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 314 [2022-11-18 19:58:07,703 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 289 transitions, 612 flow. Second operand has 3 states, 3 states have (on average 276.3333333333333) internal successors, (829), 3 states have internal predecessors, (829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:07,704 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:58:07,704 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 314 [2022-11-18 19:58:07,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:58:07,821 INFO L130 PetriNetUnfolder]: 8/525 cut-off events. [2022-11-18 19:58:07,821 INFO L131 PetriNetUnfolder]: For 66/138 co-relation queries the response was YES. [2022-11-18 19:58:07,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 584 conditions, 525 events. 8/525 cut-off events. For 66/138 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1924 event pairs, 1 based on Foata normal form. 0/476 useless extension candidates. Maximal degree in co-relation 537. Up to 25 conditions per place. [2022-11-18 19:58:07,829 INFO L137 encePairwiseOnDemand]: 311/314 looper letters, 11 selfloop transitions, 1 changer transitions 0/287 dead transitions. [2022-11-18 19:58:07,829 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 287 transitions, 632 flow [2022-11-18 19:58:07,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:58:07,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 19:58:07,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 839 transitions. [2022-11-18 19:58:07,834 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8906581740976646 [2022-11-18 19:58:07,835 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 839 transitions. [2022-11-18 19:58:07,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 839 transitions. [2022-11-18 19:58:07,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:58:07,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 839 transitions. [2022-11-18 19:58:07,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 279.6666666666667) internal successors, (839), 3 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:07,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:07,840 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:07,840 INFO L175 Difference]: Start difference. First operand has 295 places, 289 transitions, 612 flow. Second operand 3 states and 839 transitions. [2022-11-18 19:58:07,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 287 transitions, 632 flow [2022-11-18 19:58:07,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 287 transitions, 628 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 19:58:07,846 INFO L231 Difference]: Finished difference. Result has 293 places, 287 transitions, 606 flow [2022-11-18 19:58:07,847 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=606, PETRI_PLACES=293, PETRI_TRANSITIONS=287} [2022-11-18 19:58:07,847 INFO L288 CegarLoopForPetriNet]: 295 programPoint places, -2 predicate places. [2022-11-18 19:58:07,847 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 287 transitions, 606 flow [2022-11-18 19:58:07,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 276.3333333333333) internal successors, (829), 3 states have internal predecessors, (829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:07,848 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:58:07,848 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:07,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 19:58:07,849 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2022-11-18 19:58:07,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:07,849 INFO L85 PathProgramCache]: Analyzing trace with hash 297328408, now seen corresponding path program 1 times [2022-11-18 19:58:07,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:07,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697555591] [2022-11-18 19:58:07,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:07,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:07,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:07,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:58:07,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:07,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697555591] [2022-11-18 19:58:07,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697555591] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:58:07,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:58:07,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:58:07,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464828936] [2022-11-18 19:58:07,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:58:07,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:58:07,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:07,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:58:07,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:58:07,893 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 314 [2022-11-18 19:58:07,894 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 287 transitions, 606 flow. Second operand has 3 states, 3 states have (on average 261.3333333333333) internal successors, (784), 3 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:07,895 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:58:07,895 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 314 [2022-11-18 19:58:07,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:58:09,762 INFO L130 PetriNetUnfolder]: 941/8743 cut-off events. [2022-11-18 19:58:09,762 INFO L131 PetriNetUnfolder]: For 1234/1381 co-relation queries the response was YES. [2022-11-18 19:58:09,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10690 conditions, 8743 events. 941/8743 cut-off events. For 1234/1381 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 94999 event pairs, 907 based on Foata normal form. 0/7572 useless extension candidates. Maximal degree in co-relation 10646. Up to 1510 conditions per place. [2022-11-18 19:58:09,909 INFO L137 encePairwiseOnDemand]: 311/314 looper letters, 27 selfloop transitions, 2 changer transitions 0/286 dead transitions. [2022-11-18 19:58:09,910 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 286 transitions, 662 flow [2022-11-18 19:58:09,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:58:09,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 19:58:09,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 810 transitions. [2022-11-18 19:58:09,919 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8598726114649682 [2022-11-18 19:58:09,920 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 810 transitions. [2022-11-18 19:58:09,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 810 transitions. [2022-11-18 19:58:09,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:58:09,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 810 transitions. [2022-11-18 19:58:09,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 270.0) internal successors, (810), 3 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:09,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:09,945 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:09,949 INFO L175 Difference]: Start difference. First operand has 293 places, 287 transitions, 606 flow. Second operand 3 states and 810 transitions. [2022-11-18 19:58:09,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 286 transitions, 662 flow [2022-11-18 19:58:09,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 286 transitions, 661 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:58:09,957 INFO L231 Difference]: Finished difference. Result has 293 places, 286 transitions, 607 flow [2022-11-18 19:58:09,958 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=603, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=607, PETRI_PLACES=293, PETRI_TRANSITIONS=286} [2022-11-18 19:58:09,959 INFO L288 CegarLoopForPetriNet]: 295 programPoint places, -2 predicate places. [2022-11-18 19:58:09,959 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 286 transitions, 607 flow [2022-11-18 19:58:09,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 261.3333333333333) internal successors, (784), 3 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:09,960 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:58:09,960 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:09,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 19:58:09,960 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2022-11-18 19:58:09,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:09,961 INFO L85 PathProgramCache]: Analyzing trace with hash 2129890523, now seen corresponding path program 1 times [2022-11-18 19:58:09,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:09,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544201945] [2022-11-18 19:58:09,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:09,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:09,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:09,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:58:10,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:10,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544201945] [2022-11-18 19:58:10,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544201945] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:58:10,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:58:10,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:58:10,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323393834] [2022-11-18 19:58:10,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:58:10,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:58:10,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:10,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:58:10,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:58:10,004 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 314 [2022-11-18 19:58:10,006 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 286 transitions, 607 flow. Second operand has 3 states, 3 states have (on average 264.6666666666667) internal successors, (794), 3 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:10,006 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:58:10,006 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 314 [2022-11-18 19:58:10,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:58:11,193 INFO L130 PetriNetUnfolder]: 380/5244 cut-off events. [2022-11-18 19:58:11,194 INFO L131 PetriNetUnfolder]: For 677/752 co-relation queries the response was YES. [2022-11-18 19:58:11,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6120 conditions, 5244 events. 380/5244 cut-off events. For 677/752 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 50337 event pairs, 285 based on Foata normal form. 0/4788 useless extension candidates. Maximal degree in co-relation 6077. Up to 623 conditions per place. [2022-11-18 19:58:11,275 INFO L137 encePairwiseOnDemand]: 305/314 looper letters, 22 selfloop transitions, 3 changer transitions 0/285 dead transitions. [2022-11-18 19:58:11,276 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 285 transitions, 667 flow [2022-11-18 19:58:11,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:58:11,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 19:58:11,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 820 transitions. [2022-11-18 19:58:11,279 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8704883227176221 [2022-11-18 19:58:11,279 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 820 transitions. [2022-11-18 19:58:11,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 820 transitions. [2022-11-18 19:58:11,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:58:11,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 820 transitions. [2022-11-18 19:58:11,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 273.3333333333333) internal successors, (820), 3 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:11,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:11,286 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:11,286 INFO L175 Difference]: Start difference. First operand has 293 places, 286 transitions, 607 flow. Second operand 3 states and 820 transitions. [2022-11-18 19:58:11,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 285 transitions, 667 flow [2022-11-18 19:58:11,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 285 transitions, 663 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 19:58:11,294 INFO L231 Difference]: Finished difference. Result has 288 places, 283 transitions, 612 flow [2022-11-18 19:58:11,295 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=591, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=612, PETRI_PLACES=288, PETRI_TRANSITIONS=283} [2022-11-18 19:58:11,296 INFO L288 CegarLoopForPetriNet]: 295 programPoint places, -7 predicate places. [2022-11-18 19:58:11,296 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 283 transitions, 612 flow [2022-11-18 19:58:11,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 264.6666666666667) internal successors, (794), 3 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:11,296 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:58:11,297 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:11,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 19:58:11,297 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2022-11-18 19:58:11,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:11,298 INFO L85 PathProgramCache]: Analyzing trace with hash 652394468, now seen corresponding path program 1 times [2022-11-18 19:58:11,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:11,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262470445] [2022-11-18 19:58:11,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:11,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:11,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:11,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:58:11,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:11,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262470445] [2022-11-18 19:58:11,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262470445] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:58:11,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:58:11,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:58:11,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985563032] [2022-11-18 19:58:11,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:58:11,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:58:11,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:11,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:58:11,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:58:11,351 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 314 [2022-11-18 19:58:11,353 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 283 transitions, 612 flow. Second operand has 3 states, 3 states have (on average 278.0) internal successors, (834), 3 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:11,353 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:58:11,353 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 314 [2022-11-18 19:58:11,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:58:11,612 INFO L130 PetriNetUnfolder]: 16/861 cut-off events. [2022-11-18 19:58:11,613 INFO L131 PetriNetUnfolder]: For 142/369 co-relation queries the response was YES. [2022-11-18 19:58:11,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 965 conditions, 861 events. 16/861 cut-off events. For 142/369 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 4334 event pairs, 3 based on Foata normal form. 1/787 useless extension candidates. Maximal degree in co-relation 921. Up to 42 conditions per place. [2022-11-18 19:58:11,624 INFO L137 encePairwiseOnDemand]: 311/314 looper letters, 15 selfloop transitions, 2 changer transitions 0/287 dead transitions. [2022-11-18 19:58:11,624 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 287 transitions, 654 flow [2022-11-18 19:58:11,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:58:11,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 19:58:11,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 849 transitions. [2022-11-18 19:58:11,628 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9012738853503185 [2022-11-18 19:58:11,628 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 849 transitions. [2022-11-18 19:58:11,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 849 transitions. [2022-11-18 19:58:11,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:58:11,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 849 transitions. [2022-11-18 19:58:11,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 283.0) internal successors, (849), 3 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:11,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:11,635 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:11,635 INFO L175 Difference]: Start difference. First operand has 288 places, 283 transitions, 612 flow. Second operand 3 states and 849 transitions. [2022-11-18 19:58:11,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 287 transitions, 654 flow [2022-11-18 19:58:11,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 287 transitions, 654 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:58:11,642 INFO L231 Difference]: Finished difference. Result has 291 places, 284 transitions, 624 flow [2022-11-18 19:58:11,643 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=612, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=624, PETRI_PLACES=291, PETRI_TRANSITIONS=284} [2022-11-18 19:58:11,643 INFO L288 CegarLoopForPetriNet]: 295 programPoint places, -4 predicate places. [2022-11-18 19:58:11,644 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 284 transitions, 624 flow [2022-11-18 19:58:11,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 278.0) internal successors, (834), 3 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:11,644 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:58:11,645 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:11,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-18 19:58:11,645 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2022-11-18 19:58:11,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:11,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1376437155, now seen corresponding path program 1 times [2022-11-18 19:58:11,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:11,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641053891] [2022-11-18 19:58:11,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:11,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:11,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:12,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:58:12,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:12,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641053891] [2022-11-18 19:58:12,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641053891] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:58:12,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:58:12,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:58:12,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020954169] [2022-11-18 19:58:12,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:58:12,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:58:12,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:12,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:58:12,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:58:12,069 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 314 [2022-11-18 19:58:12,070 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 284 transitions, 624 flow. Second operand has 6 states, 6 states have (on average 187.5) internal successors, (1125), 6 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:12,071 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:58:12,071 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 314 [2022-11-18 19:58:12,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand