./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/40_barrier_vf-b.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version b5237d83 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_db3e8c4f-b0e8-4beb-a09f-883aac8a0b9c/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3e8c4f-b0e8-4beb-a09f-883aac8a0b9c/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3e8c4f-b0e8-4beb-a09f-883aac8a0b9c/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3e8c4f-b0e8-4beb-a09f-883aac8a0b9c/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/40_barrier_vf-b.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3e8c4f-b0e8-4beb-a09f-883aac8a0b9c/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3e8c4f-b0e8-4beb-a09f-883aac8a0b9c/bin/uautomizer-vX5HgA9Q3a --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 7e4eda3d9731a5d805cffabe3eaaa057ba5ed6235ab584548c3730cf4f9dedf3 --- 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-b5237d8 [2022-11-21 13:43:21,094 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 13:43:21,096 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 13:43:21,134 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 13:43:21,135 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 13:43:21,139 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 13:43:21,140 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 13:43:21,142 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 13:43:21,144 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 13:43:21,145 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 13:43:21,146 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 13:43:21,149 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 13:43:21,150 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 13:43:21,158 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 13:43:21,159 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 13:43:21,160 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 13:43:21,161 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 13:43:21,162 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 13:43:21,164 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 13:43:21,166 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 13:43:21,175 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 13:43:21,179 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 13:43:21,181 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 13:43:21,182 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 13:43:21,192 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 13:43:21,192 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 13:43:21,192 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 13:43:21,193 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 13:43:21,194 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 13:43:21,195 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 13:43:21,195 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 13:43:21,196 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 13:43:21,197 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 13:43:21,204 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 13:43:21,205 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 13:43:21,205 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 13:43:21,206 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 13:43:21,206 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 13:43:21,207 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 13:43:21,210 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 13:43:21,211 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 13:43:21,212 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3e8c4f-b0e8-4beb-a09f-883aac8a0b9c/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-21 13:43:21,239 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 13:43:21,239 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 13:43:21,239 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 13:43:21,240 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 13:43:21,240 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 13:43:21,241 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 13:43:21,264 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 13:43:21,264 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 13:43:21,264 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 13:43:21,264 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 13:43:21,265 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 13:43:21,265 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 13:43:21,265 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 13:43:21,266 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 13:43:21,267 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 13:43:21,267 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 13:43:21,267 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 13:43:21,267 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 13:43:21,268 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-21 13:43:21,268 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 13:43:21,268 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 13:43:21,268 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 13:43:21,269 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 13:43:21,269 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 13:43:21,269 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 13:43:21,270 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 13:43:21,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:43:21,270 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 13:43:21,270 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 13:43:21,271 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 13:43:21,271 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 13:43:21,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 13:43:21,271 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 13:43:21,272 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 13:43:21,272 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 13:43:21,272 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_db3e8c4f-b0e8-4beb-a09f-883aac8a0b9c/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3e8c4f-b0e8-4beb-a09f-883aac8a0b9c/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e4eda3d9731a5d805cffabe3eaaa057ba5ed6235ab584548c3730cf4f9dedf3 [2022-11-21 13:43:21,580 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 13:43:21,619 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 13:43:21,623 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 13:43:21,624 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 13:43:21,625 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 13:43:21,626 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3e8c4f-b0e8-4beb-a09f-883aac8a0b9c/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/pthread-ext/40_barrier_vf-b.i [2022-11-21 13:43:24,846 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 13:43:25,098 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 13:43:25,099 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3e8c4f-b0e8-4beb-a09f-883aac8a0b9c/sv-benchmarks/c/pthread-ext/40_barrier_vf-b.i [2022-11-21 13:43:25,118 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3e8c4f-b0e8-4beb-a09f-883aac8a0b9c/bin/uautomizer-vX5HgA9Q3a/data/8cb171c24/6e13bb40a6da4f23808a5b906bb5a8c8/FLAG8bbe14a1c [2022-11-21 13:43:25,146 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3e8c4f-b0e8-4beb-a09f-883aac8a0b9c/bin/uautomizer-vX5HgA9Q3a/data/8cb171c24/6e13bb40a6da4f23808a5b906bb5a8c8 [2022-11-21 13:43:25,152 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 13:43:25,155 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 13:43:25,157 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 13:43:25,157 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 13:43:25,162 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 13:43:25,162 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:43:25" (1/1) ... [2022-11-21 13:43:25,164 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33e2cf49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:43:25, skipping insertion in model container [2022-11-21 13:43:25,164 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:43:25" (1/1) ... [2022-11-21 13:43:25,173 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 13:43:25,224 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 13:43:25,576 WARN L237 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_db3e8c4f-b0e8-4beb-a09f-883aac8a0b9c/sv-benchmarks/c/pthread-ext/40_barrier_vf-b.i[30481,30494] [2022-11-21 13:43:25,583 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:43:25,599 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 13:43:25,671 WARN L237 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_db3e8c4f-b0e8-4beb-a09f-883aac8a0b9c/sv-benchmarks/c/pthread-ext/40_barrier_vf-b.i[30481,30494] [2022-11-21 13:43:25,680 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:43:25,725 INFO L208 MainTranslator]: Completed translation [2022-11-21 13:43:25,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:43:25 WrapperNode [2022-11-21 13:43:25,726 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 13:43:25,727 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 13:43:25,727 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 13:43:25,728 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 13:43:25,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:43:25" (1/1) ... [2022-11-21 13:43:25,772 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:43:25" (1/1) ... [2022-11-21 13:43:25,800 INFO L138 Inliner]: procedures = 170, calls = 18, calls flagged for inlining = 10, calls inlined = 12, statements flattened = 118 [2022-11-21 13:43:25,801 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 13:43:25,802 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 13:43:25,802 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 13:43:25,802 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 13:43:25,816 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:43:25" (1/1) ... [2022-11-21 13:43:25,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:43:25" (1/1) ... [2022-11-21 13:43:25,826 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:43:25" (1/1) ... [2022-11-21 13:43:25,826 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:43:25" (1/1) ... [2022-11-21 13:43:25,832 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:43:25" (1/1) ... [2022-11-21 13:43:25,837 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:43:25" (1/1) ... [2022-11-21 13:43:25,839 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:43:25" (1/1) ... [2022-11-21 13:43:25,843 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:43:25" (1/1) ... [2022-11-21 13:43:25,848 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 13:43:25,858 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 13:43:25,859 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 13:43:25,859 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 13:43:25,860 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:43:25" (1/1) ... [2022-11-21 13:43:25,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:43:25,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3e8c4f-b0e8-4beb-a09f-883aac8a0b9c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:43:25,895 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3e8c4f-b0e8-4beb-a09f-883aac8a0b9c/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 13:43:25,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3e8c4f-b0e8-4beb-a09f-883aac8a0b9c/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 13:43:25,940 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-21 13:43:25,940 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-21 13:43:25,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 13:43:25,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 13:43:25,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 13:43:25,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 13:43:25,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 13:43:25,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 13:43:25,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 13:43:25,943 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 13:43:26,093 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 13:43:26,096 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 13:43:26,393 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 13:43:26,606 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 13:43:26,612 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-21 13:43:26,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:43:26 BoogieIcfgContainer [2022-11-21 13:43:26,621 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 13:43:26,624 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 13:43:26,624 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 13:43:26,628 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 13:43:26,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:43:25" (1/3) ... [2022-11-21 13:43:26,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4744547f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:43:26, skipping insertion in model container [2022-11-21 13:43:26,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:43:25" (2/3) ... [2022-11-21 13:43:26,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4744547f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:43:26, skipping insertion in model container [2022-11-21 13:43:26,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:43:26" (3/3) ... [2022-11-21 13:43:26,632 INFO L112 eAbstractionObserver]: Analyzing ICFG 40_barrier_vf-b.i [2022-11-21 13:43:26,642 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 13:43:26,685 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 13:43:26,685 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2022-11-21 13:43:26,686 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 13:43:26,778 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-21 13:43:26,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 97 transitions, 199 flow [2022-11-21 13:43:26,900 INFO L130 PetriNetUnfolder]: 5/108 cut-off events. [2022-11-21 13:43:26,901 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 13:43:26,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 108 events. 5/108 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 140 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 79. Up to 4 conditions per place. [2022-11-21 13:43:26,908 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 97 transitions, 199 flow [2022-11-21 13:43:26,913 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 97 transitions, 199 flow [2022-11-21 13:43:26,926 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 13:43:26,934 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;@663b110f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 13:43:26,934 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2022-11-21 13:43:26,947 INFO L130 PetriNetUnfolder]: 2/37 cut-off events. [2022-11-21 13:43:26,947 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 13:43:26,947 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:43:26,948 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] [2022-11-21 13:43:26,949 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-11-21 13:43:26,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:43:26,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1622768940, now seen corresponding path program 1 times [2022-11-21 13:43:26,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:43:26,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722298149] [2022-11-21 13:43:26,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:43:26,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:43:27,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:27,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:43:27,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:43:27,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722298149] [2022-11-21 13:43:27,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722298149] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:43:27,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:43:27,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-21 13:43:27,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324369179] [2022-11-21 13:43:27,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:43:27,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-21 13:43:27,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:43:27,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-21 13:43:27,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 13:43:27,276 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 97 [2022-11-21 13:43:27,280 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 97 transitions, 199 flow. Second operand has 2 states, 2 states have (on average 79.0) internal successors, (158), 2 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:27,281 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:43:27,281 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 97 [2022-11-21 13:43:27,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:43:27,329 INFO L130 PetriNetUnfolder]: 1/80 cut-off events. [2022-11-21 13:43:27,330 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-21 13:43:27,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 80 events. 1/80 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 61 event pairs, 0 based on Foata normal form. 7/78 useless extension candidates. Maximal degree in co-relation 62. Up to 6 conditions per place. [2022-11-21 13:43:27,332 INFO L137 encePairwiseOnDemand]: 84/97 looper letters, 5 selfloop transitions, 0 changer transitions 0/76 dead transitions. [2022-11-21 13:43:27,332 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 76 transitions, 167 flow [2022-11-21 13:43:27,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-21 13:43:27,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-21 13:43:27,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 174 transitions. [2022-11-21 13:43:27,348 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8969072164948454 [2022-11-21 13:43:27,349 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 174 transitions. [2022-11-21 13:43:27,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 174 transitions. [2022-11-21 13:43:27,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:43:27,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 174 transitions. [2022-11-21 13:43:27,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 87.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:27,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:27,375 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:27,377 INFO L175 Difference]: Start difference. First operand has 96 places, 97 transitions, 199 flow. Second operand 2 states and 174 transitions. [2022-11-21 13:43:27,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 76 transitions, 167 flow [2022-11-21 13:43:27,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 76 transitions, 167 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 13:43:27,395 INFO L231 Difference]: Finished difference. Result has 79 places, 76 transitions, 157 flow [2022-11-21 13:43:27,399 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=157, PETRI_PLACES=79, PETRI_TRANSITIONS=76} [2022-11-21 13:43:27,406 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, -17 predicate places. [2022-11-21 13:43:27,407 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 76 transitions, 157 flow [2022-11-21 13:43:27,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 79.0) internal successors, (158), 2 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:27,408 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:43:27,408 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] [2022-11-21 13:43:27,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 13:43:27,409 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-11-21 13:43:27,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:43:27,412 INFO L85 PathProgramCache]: Analyzing trace with hash -407808489, now seen corresponding path program 1 times [2022-11-21 13:43:27,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:43:27,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681746611] [2022-11-21 13:43:27,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:43:27,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:43:27,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:27,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:43:27,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:43:27,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681746611] [2022-11-21 13:43:27,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681746611] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:43:27,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:43:27,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 13:43:27,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776408039] [2022-11-21 13:43:27,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:43:27,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:43:27,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:43:27,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:43:27,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:43:27,578 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 97 [2022-11-21 13:43:27,579 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 76 transitions, 157 flow. Second operand has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:27,579 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:43:27,579 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 97 [2022-11-21 13:43:27,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:43:27,680 INFO L130 PetriNetUnfolder]: 0/80 cut-off events. [2022-11-21 13:43:27,684 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-21 13:43:27,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 80 events. 0/80 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 55 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 0. Up to 10 conditions per place. [2022-11-21 13:43:27,686 INFO L137 encePairwiseOnDemand]: 91/97 looper letters, 12 selfloop transitions, 4 changer transitions 0/75 dead transitions. [2022-11-21 13:43:27,686 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 75 transitions, 187 flow [2022-11-21 13:43:27,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:43:27,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 13:43:27,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 216 transitions. [2022-11-21 13:43:27,689 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7422680412371134 [2022-11-21 13:43:27,689 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 216 transitions. [2022-11-21 13:43:27,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 216 transitions. [2022-11-21 13:43:27,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:43:27,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 216 transitions. [2022-11-21 13:43:27,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:27,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:27,694 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:27,695 INFO L175 Difference]: Start difference. First operand has 79 places, 76 transitions, 157 flow. Second operand 3 states and 216 transitions. [2022-11-21 13:43:27,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 75 transitions, 187 flow [2022-11-21 13:43:27,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 75 transitions, 187 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 13:43:27,698 INFO L231 Difference]: Finished difference. Result has 79 places, 74 transitions, 161 flow [2022-11-21 13:43:27,701 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=161, PETRI_PLACES=79, PETRI_TRANSITIONS=74} [2022-11-21 13:43:27,702 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, -17 predicate places. [2022-11-21 13:43:27,703 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 74 transitions, 161 flow [2022-11-21 13:43:27,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:27,703 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:43:27,704 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] [2022-11-21 13:43:27,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 13:43:27,705 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-11-21 13:43:27,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:43:27,707 INFO L85 PathProgramCache]: Analyzing trace with hash -854173413, now seen corresponding path program 1 times [2022-11-21 13:43:27,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:43:27,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468559769] [2022-11-21 13:43:27,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:43:27,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:43:27,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:43:27,748 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 13:43:27,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:43:27,811 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 13:43:27,811 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-21 13:43:27,812 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2022-11-21 13:43:27,817 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (29 of 31 remaining) [2022-11-21 13:43:27,817 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (28 of 31 remaining) [2022-11-21 13:43:27,817 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (27 of 31 remaining) [2022-11-21 13:43:27,818 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 31 remaining) [2022-11-21 13:43:27,818 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 31 remaining) [2022-11-21 13:43:27,818 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (24 of 31 remaining) [2022-11-21 13:43:27,819 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (23 of 31 remaining) [2022-11-21 13:43:27,819 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (22 of 31 remaining) [2022-11-21 13:43:27,819 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (21 of 31 remaining) [2022-11-21 13:43:27,820 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (20 of 31 remaining) [2022-11-21 13:43:27,820 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (19 of 31 remaining) [2022-11-21 13:43:27,820 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (18 of 31 remaining) [2022-11-21 13:43:27,821 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (17 of 31 remaining) [2022-11-21 13:43:27,821 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (16 of 31 remaining) [2022-11-21 13:43:27,821 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (15 of 31 remaining) [2022-11-21 13:43:27,822 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 31 remaining) [2022-11-21 13:43:27,822 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 31 remaining) [2022-11-21 13:43:27,822 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 31 remaining) [2022-11-21 13:43:27,823 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 31 remaining) [2022-11-21 13:43:27,823 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 31 remaining) [2022-11-21 13:43:27,823 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (9 of 31 remaining) [2022-11-21 13:43:27,824 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (8 of 31 remaining) [2022-11-21 13:43:27,824 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (7 of 31 remaining) [2022-11-21 13:43:27,824 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (6 of 31 remaining) [2022-11-21 13:43:27,824 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (5 of 31 remaining) [2022-11-21 13:43:27,825 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (4 of 31 remaining) [2022-11-21 13:43:27,825 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (3 of 31 remaining) [2022-11-21 13:43:27,825 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (2 of 31 remaining) [2022-11-21 13:43:27,826 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (1 of 31 remaining) [2022-11-21 13:43:27,826 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (0 of 31 remaining) [2022-11-21 13:43:27,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 13:43:27,827 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-21 13:43:27,830 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-21 13:43:27,830 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-21 13:43:27,914 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-21 13:43:27,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 164 transitions, 340 flow [2022-11-21 13:43:28,009 INFO L130 PetriNetUnfolder]: 9/188 cut-off events. [2022-11-21 13:43:28,010 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-21 13:43:28,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198 conditions, 188 events. 9/188 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 471 event pairs, 0 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 145. Up to 6 conditions per place. [2022-11-21 13:43:28,018 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 164 transitions, 340 flow [2022-11-21 13:43:28,024 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 164 transitions, 340 flow [2022-11-21 13:43:28,030 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 13:43:28,036 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;@663b110f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 13:43:28,041 INFO L358 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2022-11-21 13:43:28,048 INFO L130 PetriNetUnfolder]: 2/37 cut-off events. [2022-11-21 13:43:28,051 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 13:43:28,054 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:43:28,055 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] [2022-11-21 13:43:28,055 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 42 more)] === [2022-11-21 13:43:28,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:43:28,058 INFO L85 PathProgramCache]: Analyzing trace with hash 900439354, now seen corresponding path program 1 times [2022-11-21 13:43:28,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:43:28,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199398036] [2022-11-21 13:43:28,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:43:28,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:43:28,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:28,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:43:28,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:43:28,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199398036] [2022-11-21 13:43:28,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199398036] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:43:28,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:43:28,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-21 13:43:28,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739636500] [2022-11-21 13:43:28,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:43:28,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-21 13:43:28,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:43:28,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-21 13:43:28,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 13:43:28,108 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 164 [2022-11-21 13:43:28,109 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 164 transitions, 340 flow. Second operand has 2 states, 2 states have (on average 129.0) internal successors, (258), 2 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:28,109 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:43:28,109 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 164 [2022-11-21 13:43:28,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:43:28,219 INFO L130 PetriNetUnfolder]: 25/358 cut-off events. [2022-11-21 13:43:28,220 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2022-11-21 13:43:28,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 427 conditions, 358 events. 25/358 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1615 event pairs, 14 based on Foata normal form. 44/342 useless extension candidates. Maximal degree in co-relation 317. Up to 50 conditions per place. [2022-11-21 13:43:28,224 INFO L137 encePairwiseOnDemand]: 140/164 looper letters, 10 selfloop transitions, 0 changer transitions 0/129 dead transitions. [2022-11-21 13:43:28,224 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 129 transitions, 290 flow [2022-11-21 13:43:28,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-21 13:43:28,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-21 13:43:28,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 290 transitions. [2022-11-21 13:43:28,228 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8841463414634146 [2022-11-21 13:43:28,228 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 290 transitions. [2022-11-21 13:43:28,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 290 transitions. [2022-11-21 13:43:28,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:43:28,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 290 transitions. [2022-11-21 13:43:28,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 145.0) internal successors, (290), 2 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:28,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 164.0) internal successors, (492), 3 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:28,232 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 164.0) internal successors, (492), 3 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:28,233 INFO L175 Difference]: Start difference. First operand has 162 places, 164 transitions, 340 flow. Second operand 2 states and 290 transitions. [2022-11-21 13:43:28,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 129 transitions, 290 flow [2022-11-21 13:43:28,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 129 transitions, 288 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-11-21 13:43:28,238 INFO L231 Difference]: Finished difference. Result has 133 places, 129 transitions, 268 flow [2022-11-21 13:43:28,239 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=268, PETRI_PLACES=133, PETRI_TRANSITIONS=129} [2022-11-21 13:43:28,239 INFO L288 CegarLoopForPetriNet]: 162 programPoint places, -29 predicate places. [2022-11-21 13:43:28,240 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 129 transitions, 268 flow [2022-11-21 13:43:28,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 129.0) internal successors, (258), 2 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:28,240 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:43:28,241 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] [2022-11-21 13:43:28,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 13:43:28,241 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 42 more)] === [2022-11-21 13:43:28,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:43:28,242 INFO L85 PathProgramCache]: Analyzing trace with hash 2033814461, now seen corresponding path program 1 times [2022-11-21 13:43:28,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:43:28,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600938302] [2022-11-21 13:43:28,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:43:28,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:43:28,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:28,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:43:28,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:43:28,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600938302] [2022-11-21 13:43:28,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600938302] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:43:28,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:43:28,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 13:43:28,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997274381] [2022-11-21 13:43:28,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:43:28,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:43:28,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:43:28,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:43:28,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:43:28,315 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 164 [2022-11-21 13:43:28,315 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 129 transitions, 268 flow. Second operand has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:28,316 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:43:28,316 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 164 [2022-11-21 13:43:28,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:43:28,720 INFO L130 PetriNetUnfolder]: 339/1784 cut-off events. [2022-11-21 13:43:28,720 INFO L131 PetriNetUnfolder]: For 49/49 co-relation queries the response was YES. [2022-11-21 13:43:28,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2559 conditions, 1784 events. 339/1784 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 14234 event pairs, 108 based on Foata normal form. 0/1472 useless extension candidates. Maximal degree in co-relation 2554. Up to 370 conditions per place. [2022-11-21 13:43:28,735 INFO L137 encePairwiseOnDemand]: 148/164 looper letters, 51 selfloop transitions, 12 changer transitions 0/158 dead transitions. [2022-11-21 13:43:28,735 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 158 transitions, 457 flow [2022-11-21 13:43:28,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:43:28,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 13:43:28,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 379 transitions. [2022-11-21 13:43:28,740 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7703252032520326 [2022-11-21 13:43:28,740 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 379 transitions. [2022-11-21 13:43:28,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 379 transitions. [2022-11-21 13:43:28,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:43:28,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 379 transitions. [2022-11-21 13:43:28,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:28,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:28,747 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:28,747 INFO L175 Difference]: Start difference. First operand has 133 places, 129 transitions, 268 flow. Second operand 3 states and 379 transitions. [2022-11-21 13:43:28,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 158 transitions, 457 flow [2022-11-21 13:43:28,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 158 transitions, 457 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 13:43:28,757 INFO L231 Difference]: Finished difference. Result has 137 places, 141 transitions, 372 flow [2022-11-21 13:43:28,757 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=372, PETRI_PLACES=137, PETRI_TRANSITIONS=141} [2022-11-21 13:43:28,759 INFO L288 CegarLoopForPetriNet]: 162 programPoint places, -25 predicate places. [2022-11-21 13:43:28,759 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 141 transitions, 372 flow [2022-11-21 13:43:28,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:28,760 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:43:28,761 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] [2022-11-21 13:43:28,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 13:43:28,761 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 42 more)] === [2022-11-21 13:43:28,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:43:28,763 INFO L85 PathProgramCache]: Analyzing trace with hash -72454669, now seen corresponding path program 1 times [2022-11-21 13:43:28,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:43:28,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653415469] [2022-11-21 13:43:28,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:43:28,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:43:28,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:28,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:43:28,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:43:28,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653415469] [2022-11-21 13:43:28,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653415469] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:43:28,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:43:28,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 13:43:28,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197064362] [2022-11-21 13:43:28,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:43:28,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:43:28,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:43:28,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:43:28,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:43:28,829 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 164 [2022-11-21 13:43:28,830 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 141 transitions, 372 flow. Second operand has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:28,830 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:43:28,830 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 164 [2022-11-21 13:43:28,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:43:29,268 INFO L130 PetriNetUnfolder]: 402/1813 cut-off events. [2022-11-21 13:43:29,269 INFO L131 PetriNetUnfolder]: For 525/561 co-relation queries the response was YES. [2022-11-21 13:43:29,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3198 conditions, 1813 events. 402/1813 cut-off events. For 525/561 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 14381 event pairs, 225 based on Foata normal form. 5/1528 useless extension candidates. Maximal degree in co-relation 3191. Up to 755 conditions per place. [2022-11-21 13:43:29,282 INFO L137 encePairwiseOnDemand]: 156/164 looper letters, 62 selfloop transitions, 10 changer transitions 0/164 dead transitions. [2022-11-21 13:43:29,283 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 164 transitions, 603 flow [2022-11-21 13:43:29,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:43:29,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 13:43:29,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 360 transitions. [2022-11-21 13:43:29,284 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7317073170731707 [2022-11-21 13:43:29,285 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 360 transitions. [2022-11-21 13:43:29,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 360 transitions. [2022-11-21 13:43:29,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:43:29,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 360 transitions. [2022-11-21 13:43:29,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:29,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:29,288 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:29,289 INFO L175 Difference]: Start difference. First operand has 137 places, 141 transitions, 372 flow. Second operand 3 states and 360 transitions. [2022-11-21 13:43:29,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 164 transitions, 603 flow [2022-11-21 13:43:29,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 164 transitions, 567 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 13:43:29,300 INFO L231 Difference]: Finished difference. Result has 139 places, 149 transitions, 434 flow [2022-11-21 13:43:29,300 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=434, PETRI_PLACES=139, PETRI_TRANSITIONS=149} [2022-11-21 13:43:29,303 INFO L288 CegarLoopForPetriNet]: 162 programPoint places, -23 predicate places. [2022-11-21 13:43:29,304 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 149 transitions, 434 flow [2022-11-21 13:43:29,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:29,304 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:43:29,305 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:43:29,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 13:43:29,305 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 42 more)] === [2022-11-21 13:43:29,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:43:29,305 INFO L85 PathProgramCache]: Analyzing trace with hash 532514838, now seen corresponding path program 1 times [2022-11-21 13:43:29,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:43:29,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558392609] [2022-11-21 13:43:29,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:43:29,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:43:29,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:43:29,349 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 13:43:29,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:43:29,364 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 13:43:29,364 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-21 13:43:29,364 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (45 of 46 remaining) [2022-11-21 13:43:29,364 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (44 of 46 remaining) [2022-11-21 13:43:29,365 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (43 of 46 remaining) [2022-11-21 13:43:29,365 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (42 of 46 remaining) [2022-11-21 13:43:29,365 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (41 of 46 remaining) [2022-11-21 13:43:29,365 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (40 of 46 remaining) [2022-11-21 13:43:29,365 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (39 of 46 remaining) [2022-11-21 13:43:29,366 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (38 of 46 remaining) [2022-11-21 13:43:29,366 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (37 of 46 remaining) [2022-11-21 13:43:29,366 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (36 of 46 remaining) [2022-11-21 13:43:29,366 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (35 of 46 remaining) [2022-11-21 13:43:29,366 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (34 of 46 remaining) [2022-11-21 13:43:29,367 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (33 of 46 remaining) [2022-11-21 13:43:29,367 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (32 of 46 remaining) [2022-11-21 13:43:29,367 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (31 of 46 remaining) [2022-11-21 13:43:29,367 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (30 of 46 remaining) [2022-11-21 13:43:29,367 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (29 of 46 remaining) [2022-11-21 13:43:29,368 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (28 of 46 remaining) [2022-11-21 13:43:29,368 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (27 of 46 remaining) [2022-11-21 13:43:29,368 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 46 remaining) [2022-11-21 13:43:29,368 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 46 remaining) [2022-11-21 13:43:29,368 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (24 of 46 remaining) [2022-11-21 13:43:29,369 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (23 of 46 remaining) [2022-11-21 13:43:29,369 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (22 of 46 remaining) [2022-11-21 13:43:29,369 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (21 of 46 remaining) [2022-11-21 13:43:29,369 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (20 of 46 remaining) [2022-11-21 13:43:29,369 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (19 of 46 remaining) [2022-11-21 13:43:29,370 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (18 of 46 remaining) [2022-11-21 13:43:29,370 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (17 of 46 remaining) [2022-11-21 13:43:29,370 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (16 of 46 remaining) [2022-11-21 13:43:29,370 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (15 of 46 remaining) [2022-11-21 13:43:29,370 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 46 remaining) [2022-11-21 13:43:29,371 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 46 remaining) [2022-11-21 13:43:29,371 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 46 remaining) [2022-11-21 13:43:29,371 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 46 remaining) [2022-11-21 13:43:29,371 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 46 remaining) [2022-11-21 13:43:29,371 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (9 of 46 remaining) [2022-11-21 13:43:29,372 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (8 of 46 remaining) [2022-11-21 13:43:29,372 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (7 of 46 remaining) [2022-11-21 13:43:29,372 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (6 of 46 remaining) [2022-11-21 13:43:29,372 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (5 of 46 remaining) [2022-11-21 13:43:29,372 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (4 of 46 remaining) [2022-11-21 13:43:29,373 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (3 of 46 remaining) [2022-11-21 13:43:29,373 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (2 of 46 remaining) [2022-11-21 13:43:29,373 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (1 of 46 remaining) [2022-11-21 13:43:29,373 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (0 of 46 remaining) [2022-11-21 13:43:29,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 13:43:29,374 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-21 13:43:29,374 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-21 13:43:29,375 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-21 13:43:29,415 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-21 13:43:29,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 228 places, 231 transitions, 483 flow [2022-11-21 13:43:29,469 INFO L130 PetriNetUnfolder]: 13/268 cut-off events. [2022-11-21 13:43:29,469 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-21 13:43:29,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 284 conditions, 268 events. 13/268 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 888 event pairs, 0 based on Foata normal form. 0/206 useless extension candidates. Maximal degree in co-relation 211. Up to 8 conditions per place. [2022-11-21 13:43:29,472 INFO L82 GeneralOperation]: Start removeDead. Operand has 228 places, 231 transitions, 483 flow [2022-11-21 13:43:29,478 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 228 places, 231 transitions, 483 flow [2022-11-21 13:43:29,479 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 13:43:29,485 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;@663b110f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 13:43:29,485 INFO L358 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2022-11-21 13:43:29,492 INFO L130 PetriNetUnfolder]: 2/37 cut-off events. [2022-11-21 13:43:29,492 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 13:43:29,492 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:43:29,492 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] [2022-11-21 13:43:29,492 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2022-11-21 13:43:29,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:43:29,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1806232861, now seen corresponding path program 1 times [2022-11-21 13:43:29,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:43:29,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673267079] [2022-11-21 13:43:29,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:43:29,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:43:29,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:29,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:43:29,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:43:29,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673267079] [2022-11-21 13:43:29,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673267079] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:43:29,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:43:29,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-21 13:43:29,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371110209] [2022-11-21 13:43:29,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:43:29,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-21 13:43:29,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:43:29,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-21 13:43:29,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 13:43:29,537 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 231 [2022-11-21 13:43:29,538 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 231 transitions, 483 flow. Second operand has 2 states, 2 states have (on average 179.0) internal successors, (358), 2 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:29,538 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:43:29,538 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 231 [2022-11-21 13:43:29,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:43:29,888 INFO L130 PetriNetUnfolder]: 250/1685 cut-off events. [2022-11-21 13:43:29,888 INFO L131 PetriNetUnfolder]: For 136/136 co-relation queries the response was YES. [2022-11-21 13:43:29,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2164 conditions, 1685 events. 250/1685 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 13484 event pairs, 161 based on Foata normal form. 273/1660 useless extension candidates. Maximal degree in co-relation 1621. Up to 378 conditions per place. [2022-11-21 13:43:29,938 INFO L137 encePairwiseOnDemand]: 196/231 looper letters, 15 selfloop transitions, 0 changer transitions 0/182 dead transitions. [2022-11-21 13:43:29,938 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 182 transitions, 415 flow [2022-11-21 13:43:29,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-21 13:43:29,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-21 13:43:29,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 406 transitions. [2022-11-21 13:43:29,940 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8787878787878788 [2022-11-21 13:43:29,940 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 406 transitions. [2022-11-21 13:43:29,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 406 transitions. [2022-11-21 13:43:29,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:43:29,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 406 transitions. [2022-11-21 13:43:29,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 203.0) internal successors, (406), 2 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:29,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 231.0) internal successors, (693), 3 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:29,944 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 231.0) internal successors, (693), 3 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:29,945 INFO L175 Difference]: Start difference. First operand has 228 places, 231 transitions, 483 flow. Second operand 2 states and 406 transitions. [2022-11-21 13:43:29,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 182 transitions, 415 flow [2022-11-21 13:43:29,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 182 transitions, 409 flow, removed 3 selfloop flow, removed 0 redundant places. [2022-11-21 13:43:29,949 INFO L231 Difference]: Finished difference. Result has 187 places, 182 transitions, 379 flow [2022-11-21 13:43:29,949 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=379, PETRI_PLACES=187, PETRI_TRANSITIONS=182} [2022-11-21 13:43:29,952 INFO L288 CegarLoopForPetriNet]: 228 programPoint places, -41 predicate places. [2022-11-21 13:43:29,952 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 182 transitions, 379 flow [2022-11-21 13:43:29,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 179.0) internal successors, (358), 2 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:29,953 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:43:29,953 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] [2022-11-21 13:43:29,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 13:43:29,953 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2022-11-21 13:43:29,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:43:29,954 INFO L85 PathProgramCache]: Analyzing trace with hash -622962682, now seen corresponding path program 1 times [2022-11-21 13:43:29,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:43:29,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812370209] [2022-11-21 13:43:29,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:43:29,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:43:29,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:30,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:43:30,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:43:30,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812370209] [2022-11-21 13:43:30,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812370209] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:43:30,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:43:30,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 13:43:30,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518407001] [2022-11-21 13:43:30,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:43:30,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:43:30,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:43:30,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:43:30,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:43:30,010 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 231 [2022-11-21 13:43:30,011 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 182 transitions, 379 flow. Second operand has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:30,011 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:43:30,011 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 231 [2022-11-21 13:43:30,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:43:36,407 INFO L130 PetriNetUnfolder]: 14067/43838 cut-off events. [2022-11-21 13:43:36,408 INFO L131 PetriNetUnfolder]: For 1138/1138 co-relation queries the response was YES. [2022-11-21 13:43:36,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66801 conditions, 43838 events. 14067/43838 cut-off events. For 1138/1138 co-relation queries the response was YES. Maximal size of possible extension queue 1177. Compared 568588 event pairs, 4755 based on Foata normal form. 0/35413 useless extension candidates. Maximal degree in co-relation 66795. Up to 11712 conditions per place. [2022-11-21 13:43:36,820 INFO L137 encePairwiseOnDemand]: 207/231 looper letters, 77 selfloop transitions, 18 changer transitions 0/226 dead transitions. [2022-11-21 13:43:36,820 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 226 transitions, 667 flow [2022-11-21 13:43:36,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:43:36,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 13:43:36,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 527 transitions. [2022-11-21 13:43:36,823 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7604617604617605 [2022-11-21 13:43:36,823 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 527 transitions. [2022-11-21 13:43:36,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 527 transitions. [2022-11-21 13:43:36,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:43:36,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 527 transitions. [2022-11-21 13:43:36,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:36,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:36,830 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:36,830 INFO L175 Difference]: Start difference. First operand has 187 places, 182 transitions, 379 flow. Second operand 3 states and 527 transitions. [2022-11-21 13:43:36,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 226 transitions, 667 flow [2022-11-21 13:43:36,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 226 transitions, 667 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 13:43:36,836 INFO L231 Difference]: Finished difference. Result has 191 places, 200 transitions, 535 flow [2022-11-21 13:43:36,837 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=535, PETRI_PLACES=191, PETRI_TRANSITIONS=200} [2022-11-21 13:43:36,838 INFO L288 CegarLoopForPetriNet]: 228 programPoint places, -37 predicate places. [2022-11-21 13:43:36,838 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 200 transitions, 535 flow [2022-11-21 13:43:36,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:36,839 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:43:36,839 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] [2022-11-21 13:43:36,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 13:43:36,839 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2022-11-21 13:43:36,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:43:36,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1495359887, now seen corresponding path program 1 times [2022-11-21 13:43:36,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:43:36,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959546168] [2022-11-21 13:43:36,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:43:36,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:43:36,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:36,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:43:36,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:43:36,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959546168] [2022-11-21 13:43:36,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959546168] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:43:36,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:43:36,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 13:43:36,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356108998] [2022-11-21 13:43:36,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:43:36,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:43:36,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:43:36,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:43:36,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:43:36,900 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 231 [2022-11-21 13:43:36,901 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 200 transitions, 535 flow. Second operand has 3 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:36,901 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:43:36,901 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 231 [2022-11-21 13:43:36,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:43:42,502 INFO L130 PetriNetUnfolder]: 16978/45743 cut-off events. [2022-11-21 13:43:42,502 INFO L131 PetriNetUnfolder]: For 17016/19917 co-relation queries the response was YES. [2022-11-21 13:43:42,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88481 conditions, 45743 events. 16978/45743 cut-off events. For 17016/19917 co-relation queries the response was YES. Maximal size of possible extension queue 1241. Compared 560225 event pairs, 9545 based on Foata normal form. 76/37963 useless extension candidates. Maximal degree in co-relation 88473. Up to 23568 conditions per place. [2022-11-21 13:43:42,969 INFO L137 encePairwiseOnDemand]: 219/231 looper letters, 100 selfloop transitions, 20 changer transitions 0/248 dead transitions. [2022-11-21 13:43:42,969 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 248 transitions, 961 flow [2022-11-21 13:43:42,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:43:42,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 13:43:42,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 508 transitions. [2022-11-21 13:43:42,972 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.733044733044733 [2022-11-21 13:43:42,972 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 508 transitions. [2022-11-21 13:43:42,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 508 transitions. [2022-11-21 13:43:42,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:43:42,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 508 transitions. [2022-11-21 13:43:42,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:42,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:42,979 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:42,979 INFO L175 Difference]: Start difference. First operand has 191 places, 200 transitions, 535 flow. Second operand 3 states and 508 transitions. [2022-11-21 13:43:42,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 248 transitions, 961 flow [2022-11-21 13:43:43,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 248 transitions, 901 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 13:43:43,012 INFO L231 Difference]: Finished difference. Result has 193 places, 218 transitions, 685 flow [2022-11-21 13:43:43,012 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=685, PETRI_PLACES=193, PETRI_TRANSITIONS=218} [2022-11-21 13:43:43,015 INFO L288 CegarLoopForPetriNet]: 228 programPoint places, -35 predicate places. [2022-11-21 13:43:43,015 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 218 transitions, 685 flow [2022-11-21 13:43:43,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:43,016 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:43:43,016 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] [2022-11-21 13:43:43,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 13:43:43,017 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2022-11-21 13:43:43,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:43:43,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1853129783, now seen corresponding path program 1 times [2022-11-21 13:43:43,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:43:43,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062223008] [2022-11-21 13:43:43,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:43:43,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:43:43,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:43,089 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-21 13:43:43,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:43:43,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062223008] [2022-11-21 13:43:43,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062223008] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:43:43,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:43:43,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 13:43:43,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548974192] [2022-11-21 13:43:43,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:43:43,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:43:43,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:43:43,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:43:43,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:43:43,095 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 231 [2022-11-21 13:43:43,096 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 218 transitions, 685 flow. Second operand has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:43,096 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:43:43,096 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 231 [2022-11-21 13:43:43,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:43:49,215 INFO L130 PetriNetUnfolder]: 18721/52968 cut-off events. [2022-11-21 13:43:49,215 INFO L131 PetriNetUnfolder]: For 21935/25737 co-relation queries the response was YES. [2022-11-21 13:43:49,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103206 conditions, 52968 events. 18721/52968 cut-off events. For 21935/25737 co-relation queries the response was YES. Maximal size of possible extension queue 1443. Compared 679306 event pairs, 10185 based on Foata normal form. 117/43517 useless extension candidates. Maximal degree in co-relation 103197. Up to 26050 conditions per place. [2022-11-21 13:43:49,762 INFO L137 encePairwiseOnDemand]: 219/231 looper letters, 115 selfloop transitions, 28 changer transitions 0/272 dead transitions. [2022-11-21 13:43:49,762 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 272 transitions, 1208 flow [2022-11-21 13:43:49,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:43:49,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 13:43:49,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 507 transitions. [2022-11-21 13:43:49,765 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7316017316017316 [2022-11-21 13:43:49,765 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 507 transitions. [2022-11-21 13:43:49,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 507 transitions. [2022-11-21 13:43:49,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:43:49,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 507 transitions. [2022-11-21 13:43:49,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:49,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:49,772 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:49,772 INFO L175 Difference]: Start difference. First operand has 193 places, 218 transitions, 685 flow. Second operand 3 states and 507 transitions. [2022-11-21 13:43:49,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 272 transitions, 1208 flow [2022-11-21 13:43:49,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 272 transitions, 1150 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 13:43:49,868 INFO L231 Difference]: Finished difference. Result has 195 places, 242 transitions, 931 flow [2022-11-21 13:43:49,868 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=645, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=931, PETRI_PLACES=195, PETRI_TRANSITIONS=242} [2022-11-21 13:43:49,869 INFO L288 CegarLoopForPetriNet]: 228 programPoint places, -33 predicate places. [2022-11-21 13:43:49,869 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 242 transitions, 931 flow [2022-11-21 13:43:49,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:49,870 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:43:49,870 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] [2022-11-21 13:43:49,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 13:43:49,871 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err9ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2022-11-21 13:43:49,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:43:49,872 INFO L85 PathProgramCache]: Analyzing trace with hash -21387717, now seen corresponding path program 1 times [2022-11-21 13:43:49,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:43:49,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127958560] [2022-11-21 13:43:49,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:43:49,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:43:49,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:49,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:43:49,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:43:49,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127958560] [2022-11-21 13:43:49,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127958560] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:43:49,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:43:49,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 13:43:49,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727110227] [2022-11-21 13:43:49,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:43:49,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:43:49,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:43:49,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:43:49,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:43:49,931 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 231 [2022-11-21 13:43:49,932 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 242 transitions, 931 flow. Second operand has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:49,932 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:43:49,932 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 231 [2022-11-21 13:43:49,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:43:53,828 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([939] L705-2-->L705-3: Formula: (= |v_thr1Thread2of3ForFork0_Barrier2_#t~nondet7#1_5| |v_#race~COND~0_1|) InVars {thr1Thread2of3ForFork0_Barrier2_#t~nondet7#1=|v_thr1Thread2of3ForFork0_Barrier2_#t~nondet7#1_5|} OutVars{thr1Thread2of3ForFork0_Barrier2_#t~nondet7#1=|v_thr1Thread2of3ForFork0_Barrier2_#t~nondet7#1_5|, #race~COND~0=|v_#race~COND~0_1|} AuxVars[] AssignedVars[#race~COND~0][120], [thr1Thread1of3ForFork0InUse, 30#L709-1true, thr1Thread2of3ForFork0InUse, 161#L705-3true, thr1Thread3of3ForFork0InUse, 79#L703-5true, 246#true, 252#true, 158#L717-5true, Black: 234#true, 231#true, Black: 242#(= |thr1Thread1of3ForFork0_Barrier2_#t~nondet6#1| |#race~count~0|), Black: 248#(= |#race~count~0| |thr1Thread2of3ForFork0_Barrier2_#t~nondet6#1|)]) [2022-11-21 13:43:53,829 INFO L383 tUnfolder$Statistics]: this new event has 96 ancestors and is cut-off event [2022-11-21 13:43:53,829 INFO L386 tUnfolder$Statistics]: existing Event has 91 ancestors and is cut-off event [2022-11-21 13:43:53,829 INFO L386 tUnfolder$Statistics]: existing Event has 96 ancestors and is cut-off event [2022-11-21 13:43:53,829 INFO L386 tUnfolder$Statistics]: existing Event has 91 ancestors and is cut-off event [2022-11-21 13:43:53,829 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([936] L708-->L708-2: Formula: (and (= 0 v_~MTX~0_88) (= |v_thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond#1_7| |v_thr1Thread2of3ForFork0_assume_abort_if_not_~cond#1_7|) (not (= |v_thr1Thread2of3ForFork0_assume_abort_if_not_~cond#1_7| 0)) (= |v_thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond#1_7| (ite (= (mod v_~MTX~0_89 256) 1) 1 0))) InVars {~MTX~0=v_~MTX~0_89} OutVars{thr1Thread2of3ForFork0_assume_abort_if_not_~cond#1=|v_thr1Thread2of3ForFork0_assume_abort_if_not_~cond#1_7|, #race~MTX~0=|v_#race~MTX~0_123|, ~MTX~0=v_~MTX~0_88, thr1Thread2of3ForFork0___VERIFIER_atomic_release_#t~nondet4#1=|v_thr1Thread2of3ForFork0___VERIFIER_atomic_release_#t~nondet4#1_5|, thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond#1=|v_thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond#1_7|} AuxVars[] AssignedVars[~MTX~0, thr1Thread2of3ForFork0_assume_abort_if_not_~cond#1, #race~MTX~0, thr1Thread2of3ForFork0___VERIFIER_atomic_release_#t~nondet4#1, thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond#1][104], [thr1Thread1of3ForFork0InUse, 30#L709-1true, thr1Thread2of3ForFork0InUse, thr1Thread3of3ForFork0InUse, 79#L703-5true, 246#true, 252#true, 158#L717-5true, Black: 234#true, 140#L708-2true, 231#true, Black: 242#(= |thr1Thread1of3ForFork0_Barrier2_#t~nondet6#1| |#race~count~0|), Black: 248#(= |#race~count~0| |thr1Thread2of3ForFork0_Barrier2_#t~nondet6#1|)]) [2022-11-21 13:43:53,829 INFO L383 tUnfolder$Statistics]: this new event has 94 ancestors and is cut-off event [2022-11-21 13:43:53,829 INFO L386 tUnfolder$Statistics]: existing Event has 94 ancestors and is cut-off event [2022-11-21 13:43:53,830 INFO L386 tUnfolder$Statistics]: existing Event has 89 ancestors and is cut-off event [2022-11-21 13:43:53,830 INFO L386 tUnfolder$Statistics]: existing Event has 89 ancestors and is cut-off event [2022-11-21 13:43:57,680 INFO L130 PetriNetUnfolder]: 19586/63532 cut-off events. [2022-11-21 13:43:57,681 INFO L131 PetriNetUnfolder]: For 11287/12390 co-relation queries the response was YES. [2022-11-21 13:43:57,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109993 conditions, 63532 events. 19586/63532 cut-off events. For 11287/12390 co-relation queries the response was YES. Maximal size of possible extension queue 1905. Compared 899019 event pairs, 9692 based on Foata normal form. 74/52643 useless extension candidates. Maximal degree in co-relation 109983. Up to 22844 conditions per place. [2022-11-21 13:43:58,178 INFO L137 encePairwiseOnDemand]: 216/231 looper letters, 68 selfloop transitions, 12 changer transitions 0/280 dead transitions. [2022-11-21 13:43:58,179 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 280 transitions, 1177 flow [2022-11-21 13:43:58,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:43:58,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 13:43:58,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 536 transitions. [2022-11-21 13:43:58,180 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7734487734487735 [2022-11-21 13:43:58,180 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 536 transitions. [2022-11-21 13:43:58,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 536 transitions. [2022-11-21 13:43:58,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:43:58,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 536 transitions. [2022-11-21 13:43:58,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:58,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:58,183 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:58,184 INFO L175 Difference]: Start difference. First operand has 195 places, 242 transitions, 931 flow. Second operand 3 states and 536 transitions. [2022-11-21 13:43:58,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 280 transitions, 1177 flow [2022-11-21 13:43:58,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 280 transitions, 1121 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 13:43:58,226 INFO L231 Difference]: Finished difference. Result has 197 places, 254 transitions, 977 flow [2022-11-21 13:43:58,227 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=875, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=977, PETRI_PLACES=197, PETRI_TRANSITIONS=254} [2022-11-21 13:43:58,227 INFO L288 CegarLoopForPetriNet]: 228 programPoint places, -31 predicate places. [2022-11-21 13:43:58,227 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 254 transitions, 977 flow [2022-11-21 13:43:58,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:58,228 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:43:58,228 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] [2022-11-21 13:43:58,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 13:43:58,228 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err5ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2022-11-21 13:43:58,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:43:58,229 INFO L85 PathProgramCache]: Analyzing trace with hash -664032237, now seen corresponding path program 1 times [2022-11-21 13:43:58,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:43:58,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160350116] [2022-11-21 13:43:58,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:43:58,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:43:58,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:43:58,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:43:58,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:43:58,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160350116] [2022-11-21 13:43:58,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160350116] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:43:58,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:43:58,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 13:43:58,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927603706] [2022-11-21 13:43:58,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:43:58,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:43:58,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:43:58,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:43:58,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:43:58,294 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 231 [2022-11-21 13:43:58,295 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 254 transitions, 977 flow. Second operand has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:43:58,295 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:43:58,295 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 231 [2022-11-21 13:43:58,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:44:02,973 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([939] L705-2-->L705-3: Formula: (= |v_thr1Thread2of3ForFork0_Barrier2_#t~nondet7#1_5| |v_#race~COND~0_1|) InVars {thr1Thread2of3ForFork0_Barrier2_#t~nondet7#1=|v_thr1Thread2of3ForFork0_Barrier2_#t~nondet7#1_5|} OutVars{thr1Thread2of3ForFork0_Barrier2_#t~nondet7#1=|v_thr1Thread2of3ForFork0_Barrier2_#t~nondet7#1_5|, #race~COND~0=|v_#race~COND~0_1|} AuxVars[] AssignedVars[#race~COND~0][118], [Black: 254#(= |#race~COND~0| 0), 30#L709-1true, thr1Thread1of3ForFork0InUse, thr1Thread2of3ForFork0InUse, 161#L705-3true, thr1Thread3of3ForFork0InUse, 79#L703-5true, 252#true, 158#L717-5true, Black: 234#true, 231#true, Black: 242#(= |thr1Thread1of3ForFork0_Barrier2_#t~nondet6#1| |#race~count~0|), Black: 248#(= |#race~count~0| |thr1Thread2of3ForFork0_Barrier2_#t~nondet6#1|), 258#true]) [2022-11-21 13:44:02,973 INFO L383 tUnfolder$Statistics]: this new event has 96 ancestors and is cut-off event [2022-11-21 13:44:02,973 INFO L386 tUnfolder$Statistics]: existing Event has 91 ancestors and is cut-off event [2022-11-21 13:44:02,973 INFO L386 tUnfolder$Statistics]: existing Event has 96 ancestors and is cut-off event [2022-11-21 13:44:02,973 INFO L386 tUnfolder$Statistics]: existing Event has 91 ancestors and is cut-off event [2022-11-21 13:44:02,973 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([936] L708-->L708-2: Formula: (and (= 0 v_~MTX~0_88) (= |v_thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond#1_7| |v_thr1Thread2of3ForFork0_assume_abort_if_not_~cond#1_7|) (not (= |v_thr1Thread2of3ForFork0_assume_abort_if_not_~cond#1_7| 0)) (= |v_thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond#1_7| (ite (= (mod v_~MTX~0_89 256) 1) 1 0))) InVars {~MTX~0=v_~MTX~0_89} OutVars{thr1Thread2of3ForFork0_assume_abort_if_not_~cond#1=|v_thr1Thread2of3ForFork0_assume_abort_if_not_~cond#1_7|, #race~MTX~0=|v_#race~MTX~0_123|, ~MTX~0=v_~MTX~0_88, thr1Thread2of3ForFork0___VERIFIER_atomic_release_#t~nondet4#1=|v_thr1Thread2of3ForFork0___VERIFIER_atomic_release_#t~nondet4#1_5|, thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond#1=|v_thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond#1_7|} AuxVars[] AssignedVars[~MTX~0, thr1Thread2of3ForFork0_assume_abort_if_not_~cond#1, #race~MTX~0, thr1Thread2of3ForFork0___VERIFIER_atomic_release_#t~nondet4#1, thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond#1][102], [Black: 254#(= |#race~COND~0| 0), 30#L709-1true, thr1Thread1of3ForFork0InUse, thr1Thread2of3ForFork0InUse, thr1Thread3of3ForFork0InUse, 79#L703-5true, 252#true, 158#L717-5true, Black: 234#true, 140#L708-2true, 231#true, Black: 242#(= |thr1Thread1of3ForFork0_Barrier2_#t~nondet6#1| |#race~count~0|), Black: 248#(= |#race~count~0| |thr1Thread2of3ForFork0_Barrier2_#t~nondet6#1|), 258#true]) [2022-11-21 13:44:02,974 INFO L383 tUnfolder$Statistics]: this new event has 94 ancestors and is cut-off event [2022-11-21 13:44:02,974 INFO L386 tUnfolder$Statistics]: existing Event has 94 ancestors and is cut-off event [2022-11-21 13:44:02,974 INFO L386 tUnfolder$Statistics]: existing Event has 89 ancestors and is cut-off event [2022-11-21 13:44:02,974 INFO L386 tUnfolder$Statistics]: existing Event has 89 ancestors and is cut-off event [2022-11-21 13:44:07,290 INFO L130 PetriNetUnfolder]: 23254/68027 cut-off events. [2022-11-21 13:44:07,290 INFO L131 PetriNetUnfolder]: For 27439/31129 co-relation queries the response was YES. [2022-11-21 13:44:07,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137959 conditions, 68027 events. 23254/68027 cut-off events. For 27439/31129 co-relation queries the response was YES. Maximal size of possible extension queue 2026. Compared 927681 event pairs, 13190 based on Foata normal form. 122/57273 useless extension candidates. Maximal degree in co-relation 137948. Up to 33387 conditions per place. [2022-11-21 13:44:07,782 INFO L137 encePairwiseOnDemand]: 221/231 looper letters, 79 selfloop transitions, 16 changer transitions 0/292 dead transitions. [2022-11-21 13:44:07,783 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 292 transitions, 1305 flow [2022-11-21 13:44:07,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:44:07,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 13:44:07,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 520 transitions. [2022-11-21 13:44:07,785 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7503607503607503 [2022-11-21 13:44:07,785 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 520 transitions. [2022-11-21 13:44:07,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 520 transitions. [2022-11-21 13:44:07,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:44:07,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 520 transitions. [2022-11-21 13:44:07,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:44:07,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:44:07,790 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:44:07,790 INFO L175 Difference]: Start difference. First operand has 197 places, 254 transitions, 977 flow. Second operand 3 states and 520 transitions. [2022-11-21 13:44:07,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 292 transitions, 1305 flow [2022-11-21 13:44:08,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 292 transitions, 1265 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 13:44:08,024 INFO L231 Difference]: Finished difference. Result has 199 places, 268 transitions, 1099 flow [2022-11-21 13:44:08,024 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=953, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1099, PETRI_PLACES=199, PETRI_TRANSITIONS=268} [2022-11-21 13:44:08,025 INFO L288 CegarLoopForPetriNet]: 228 programPoint places, -29 predicate places. [2022-11-21 13:44:08,025 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 268 transitions, 1099 flow [2022-11-21 13:44:08,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:44:08,025 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:44:08,026 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:44:08,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-21 13:44:08,026 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2022-11-21 13:44:08,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:44:08,027 INFO L85 PathProgramCache]: Analyzing trace with hash 2100555834, now seen corresponding path program 1 times [2022-11-21 13:44:08,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:44:08,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279802135] [2022-11-21 13:44:08,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:44:08,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:44:08,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:44:08,044 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 13:44:08,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:44:08,059 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 13:44:08,060 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-21 13:44:08,060 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (60 of 61 remaining) [2022-11-21 13:44:08,060 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (59 of 61 remaining) [2022-11-21 13:44:08,060 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (58 of 61 remaining) [2022-11-21 13:44:08,060 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (57 of 61 remaining) [2022-11-21 13:44:08,061 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (56 of 61 remaining) [2022-11-21 13:44:08,061 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (55 of 61 remaining) [2022-11-21 13:44:08,061 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (54 of 61 remaining) [2022-11-21 13:44:08,061 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (53 of 61 remaining) [2022-11-21 13:44:08,061 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (52 of 61 remaining) [2022-11-21 13:44:08,062 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (51 of 61 remaining) [2022-11-21 13:44:08,062 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (50 of 61 remaining) [2022-11-21 13:44:08,062 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (49 of 61 remaining) [2022-11-21 13:44:08,062 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (48 of 61 remaining) [2022-11-21 13:44:08,062 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (47 of 61 remaining) [2022-11-21 13:44:08,063 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (46 of 61 remaining) [2022-11-21 13:44:08,063 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (45 of 61 remaining) [2022-11-21 13:44:08,063 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (44 of 61 remaining) [2022-11-21 13:44:08,063 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (43 of 61 remaining) [2022-11-21 13:44:08,063 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (42 of 61 remaining) [2022-11-21 13:44:08,063 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (41 of 61 remaining) [2022-11-21 13:44:08,064 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (40 of 61 remaining) [2022-11-21 13:44:08,064 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (39 of 61 remaining) [2022-11-21 13:44:08,064 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (38 of 61 remaining) [2022-11-21 13:44:08,064 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (37 of 61 remaining) [2022-11-21 13:44:08,064 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (36 of 61 remaining) [2022-11-21 13:44:08,065 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (35 of 61 remaining) [2022-11-21 13:44:08,065 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (34 of 61 remaining) [2022-11-21 13:44:08,065 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (33 of 61 remaining) [2022-11-21 13:44:08,065 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (32 of 61 remaining) [2022-11-21 13:44:08,065 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (31 of 61 remaining) [2022-11-21 13:44:08,066 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (30 of 61 remaining) [2022-11-21 13:44:08,066 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (29 of 61 remaining) [2022-11-21 13:44:08,066 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (28 of 61 remaining) [2022-11-21 13:44:08,066 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (27 of 61 remaining) [2022-11-21 13:44:08,066 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 61 remaining) [2022-11-21 13:44:08,066 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 61 remaining) [2022-11-21 13:44:08,067 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (24 of 61 remaining) [2022-11-21 13:44:08,067 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (23 of 61 remaining) [2022-11-21 13:44:08,067 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (22 of 61 remaining) [2022-11-21 13:44:08,067 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (21 of 61 remaining) [2022-11-21 13:44:08,067 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (20 of 61 remaining) [2022-11-21 13:44:08,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (19 of 61 remaining) [2022-11-21 13:44:08,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (18 of 61 remaining) [2022-11-21 13:44:08,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (17 of 61 remaining) [2022-11-21 13:44:08,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (16 of 61 remaining) [2022-11-21 13:44:08,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (15 of 61 remaining) [2022-11-21 13:44:08,069 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 61 remaining) [2022-11-21 13:44:08,069 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 61 remaining) [2022-11-21 13:44:08,069 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 61 remaining) [2022-11-21 13:44:08,069 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 61 remaining) [2022-11-21 13:44:08,069 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 61 remaining) [2022-11-21 13:44:08,069 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (9 of 61 remaining) [2022-11-21 13:44:08,070 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (8 of 61 remaining) [2022-11-21 13:44:08,070 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (7 of 61 remaining) [2022-11-21 13:44:08,070 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (6 of 61 remaining) [2022-11-21 13:44:08,070 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (5 of 61 remaining) [2022-11-21 13:44:08,070 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (4 of 61 remaining) [2022-11-21 13:44:08,071 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (3 of 61 remaining) [2022-11-21 13:44:08,071 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (2 of 61 remaining) [2022-11-21 13:44:08,071 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (1 of 61 remaining) [2022-11-21 13:44:08,071 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (0 of 61 remaining) [2022-11-21 13:44:08,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-21 13:44:08,072 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:44:08,072 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-21 13:44:08,073 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-21 13:44:08,132 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-21 13:44:08,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 294 places, 298 transitions, 628 flow [2022-11-21 13:44:08,205 INFO L130 PetriNetUnfolder]: 17/348 cut-off events. [2022-11-21 13:44:08,205 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-21 13:44:08,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 371 conditions, 348 events. 17/348 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1323 event pairs, 0 based on Foata normal form. 0/266 useless extension candidates. Maximal degree in co-relation 277. Up to 10 conditions per place. [2022-11-21 13:44:08,209 INFO L82 GeneralOperation]: Start removeDead. Operand has 294 places, 298 transitions, 628 flow [2022-11-21 13:44:08,218 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 294 places, 298 transitions, 628 flow [2022-11-21 13:44:08,220 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 13:44:08,220 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;@663b110f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 13:44:08,220 INFO L358 AbstractCegarLoop]: Starting to check reachability of 76 error locations. [2022-11-21 13:44:08,223 INFO L130 PetriNetUnfolder]: 2/37 cut-off events. [2022-11-21 13:44:08,223 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 13:44:08,223 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:44:08,223 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] [2022-11-21 13:44:08,224 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 72 more)] === [2022-11-21 13:44:08,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:44:08,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1148787505, now seen corresponding path program 1 times [2022-11-21 13:44:08,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:44:08,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220621391] [2022-11-21 13:44:08,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:44:08,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:44:08,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:44:08,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:44:08,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:44:08,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220621391] [2022-11-21 13:44:08,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220621391] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:44:08,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:44:08,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-21 13:44:08,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856859802] [2022-11-21 13:44:08,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:44:08,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-21 13:44:08,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:44:08,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-21 13:44:08,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 13:44:08,250 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 298 [2022-11-21 13:44:08,251 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 298 transitions, 628 flow. Second operand has 2 states, 2 states have (on average 229.0) internal successors, (458), 2 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:44:08,251 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:44:08,251 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 298 [2022-11-21 13:44:08,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:44:09,658 INFO L130 PetriNetUnfolder]: 1933/8182 cut-off events. [2022-11-21 13:44:09,658 INFO L131 PetriNetUnfolder]: For 1169/1169 co-relation queries the response was YES. [2022-11-21 13:44:09,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11391 conditions, 8182 events. 1933/8182 cut-off events. For 1169/1169 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 87930 event pairs, 1329 based on Foata normal form. 1657/8475 useless extension candidates. Maximal degree in co-relation 8513. Up to 2591 conditions per place. [2022-11-21 13:44:09,733 INFO L137 encePairwiseOnDemand]: 252/298 looper letters, 20 selfloop transitions, 0 changer transitions 0/235 dead transitions. [2022-11-21 13:44:09,733 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 235 transitions, 542 flow [2022-11-21 13:44:09,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-21 13:44:09,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-21 13:44:09,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 522 transitions. [2022-11-21 13:44:09,736 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8758389261744967 [2022-11-21 13:44:09,736 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 522 transitions. [2022-11-21 13:44:09,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 522 transitions. [2022-11-21 13:44:09,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:44:09,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 522 transitions. [2022-11-21 13:44:09,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 261.0) internal successors, (522), 2 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:44:09,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 298.0) internal successors, (894), 3 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:44:09,740 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 298.0) internal successors, (894), 3 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:44:09,740 INFO L175 Difference]: Start difference. First operand has 294 places, 298 transitions, 628 flow. Second operand 2 states and 522 transitions. [2022-11-21 13:44:09,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 235 transitions, 542 flow [2022-11-21 13:44:09,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 235 transitions, 530 flow, removed 6 selfloop flow, removed 0 redundant places. [2022-11-21 13:44:09,745 INFO L231 Difference]: Finished difference. Result has 241 places, 235 transitions, 490 flow [2022-11-21 13:44:09,746 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=490, PETRI_PLACES=241, PETRI_TRANSITIONS=235} [2022-11-21 13:44:09,746 INFO L288 CegarLoopForPetriNet]: 294 programPoint places, -53 predicate places. [2022-11-21 13:44:09,747 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 235 transitions, 490 flow [2022-11-21 13:44:09,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 229.0) internal successors, (458), 2 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:44:09,747 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:44:09,747 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] [2022-11-21 13:44:09,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-21 13:44:09,748 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 72 more)] === [2022-11-21 13:44:09,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:44:09,748 INFO L85 PathProgramCache]: Analyzing trace with hash -178156430, now seen corresponding path program 1 times [2022-11-21 13:44:09,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:44:09,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073025626] [2022-11-21 13:44:09,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:44:09,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:44:09,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:44:09,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:44:09,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:44:09,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073025626] [2022-11-21 13:44:09,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073025626] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:44:09,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:44:09,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 13:44:09,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471738540] [2022-11-21 13:44:09,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:44:09,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:44:09,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:44:09,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:44:09,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:44:09,778 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 298 [2022-11-21 13:44:09,778 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 235 transitions, 490 flow. Second operand has 3 states, 3 states have (on average 181.33333333333334) internal successors, (544), 3 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:44:09,778 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:44:09,779 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 298 [2022-11-21 13:44:09,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand