./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_04-munge_racefree.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_967e9b22-aa0e-42a4-b47d-b1d43e55b716/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967e9b22-aa0e-42a4-b47d-b1d43e55b716/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_967e9b22-aa0e-42a4-b47d-b1d43e55b716/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967e9b22-aa0e-42a4-b47d-b1d43e55b716/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_04-munge_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967e9b22-aa0e-42a4-b47d-b1d43e55b716/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_967e9b22-aa0e-42a4-b47d-b1d43e55b716/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 50de8acec85b0b2508f1f33521d9ab6717fa1b5141d6b9e2d08fcb4af894112b --- 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 16:17:26,212 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:17:26,215 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:17:26,238 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:17:26,239 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:17:26,240 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:17:26,241 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:17:26,243 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:17:26,245 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:17:26,246 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:17:26,246 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:17:26,249 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:17:26,250 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:17:26,254 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:17:26,255 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:17:26,256 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:17:26,262 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:17:26,263 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:17:26,264 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:17:26,266 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:17:26,268 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:17:26,269 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:17:26,270 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:17:26,271 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:17:26,275 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:17:26,275 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:17:26,275 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:17:26,276 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:17:26,277 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:17:26,278 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:17:26,278 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:17:26,279 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:17:26,280 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:17:26,281 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:17:26,282 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:17:26,283 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:17:26,283 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:17:26,284 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:17:26,284 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:17:26,285 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:17:26,286 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:17:26,287 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967e9b22-aa0e-42a4-b47d-b1d43e55b716/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-21 16:17:26,307 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:17:26,308 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:17:26,308 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:17:26,309 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:17:26,309 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:17:26,310 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:17:26,310 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:17:26,311 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:17:26,311 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:17:26,311 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:17:26,311 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:17:26,312 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 16:17:26,312 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:17:26,312 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:17:26,312 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:17:26,313 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 16:17:26,313 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:17:26,313 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 16:17:26,313 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-21 16:17:26,313 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:17:26,314 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 16:17:26,314 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:17:26,314 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 16:17:26,314 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:17:26,314 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:17:26,315 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:17:26,315 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:17:26,315 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:17:26,315 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:17:26,316 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 16:17:26,316 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:17:26,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:17:26,316 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 16:17:26,316 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 16:17:26,317 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 16:17:26,317 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_967e9b22-aa0e-42a4-b47d-b1d43e55b716/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967e9b22-aa0e-42a4-b47d-b1d43e55b716/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50de8acec85b0b2508f1f33521d9ab6717fa1b5141d6b9e2d08fcb4af894112b [2022-11-21 16:17:26,628 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:17:26,649 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:17:26,652 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:17:26,653 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:17:26,653 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:17:26,655 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967e9b22-aa0e-42a4-b47d-b1d43e55b716/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/goblint-regression/28-race_reach_04-munge_racefree.i [2022-11-21 16:17:29,696 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:17:30,041 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:17:30,041 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967e9b22-aa0e-42a4-b47d-b1d43e55b716/sv-benchmarks/c/goblint-regression/28-race_reach_04-munge_racefree.i [2022-11-21 16:17:30,073 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967e9b22-aa0e-42a4-b47d-b1d43e55b716/bin/uautomizer-vX5HgA9Q3a/data/38db8747e/44a8560e1c15475fb8db9e1b75eebc0b/FLAG589ef91be [2022-11-21 16:17:30,115 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967e9b22-aa0e-42a4-b47d-b1d43e55b716/bin/uautomizer-vX5HgA9Q3a/data/38db8747e/44a8560e1c15475fb8db9e1b75eebc0b [2022-11-21 16:17:30,122 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:17:30,124 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:17:30,126 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:17:30,127 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:17:30,131 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:17:30,132 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:17:30" (1/1) ... [2022-11-21 16:17:30,133 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43b61bef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:17:30, skipping insertion in model container [2022-11-21 16:17:30,134 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:17:30" (1/1) ... [2022-11-21 16:17:30,142 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:17:30,206 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:17:30,576 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_967e9b22-aa0e-42a4-b47d-b1d43e55b716/sv-benchmarks/c/goblint-regression/28-race_reach_04-munge_racefree.i[30176,30189] [2022-11-21 16:17:30,625 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:17:30,644 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:17:30,690 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_967e9b22-aa0e-42a4-b47d-b1d43e55b716/sv-benchmarks/c/goblint-regression/28-race_reach_04-munge_racefree.i[30176,30189] [2022-11-21 16:17:30,707 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:17:30,753 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:17:30,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:17:30 WrapperNode [2022-11-21 16:17:30,754 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:17:30,755 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:17:30,755 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:17:30,756 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:17:30,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:17:30" (1/1) ... [2022-11-21 16:17:30,789 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:17:30" (1/1) ... [2022-11-21 16:17:30,831 INFO L138 Inliner]: procedures = 172, calls = 37, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 238 [2022-11-21 16:17:30,835 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:17:30,836 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:17:30,836 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:17:30,836 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:17:30,846 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:17:30" (1/1) ... [2022-11-21 16:17:30,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:17:30" (1/1) ... [2022-11-21 16:17:30,850 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:17:30" (1/1) ... [2022-11-21 16:17:30,850 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:17:30" (1/1) ... [2022-11-21 16:17:30,861 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:17:30" (1/1) ... [2022-11-21 16:17:30,867 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:17:30" (1/1) ... [2022-11-21 16:17:30,869 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:17:30" (1/1) ... [2022-11-21 16:17:30,871 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:17:30" (1/1) ... [2022-11-21 16:17:30,874 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:17:30,875 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:17:30,876 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:17:30,876 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:17:30,877 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:17:30" (1/1) ... [2022-11-21 16:17:30,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:17:30,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967e9b22-aa0e-42a4-b47d-b1d43e55b716/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:17:30,909 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967e9b22-aa0e-42a4-b47d-b1d43e55b716/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:17:30,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967e9b22-aa0e-42a4-b47d-b1d43e55b716/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:17:30,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 16:17:30,959 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-11-21 16:17:30,959 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-11-21 16:17:30,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 16:17:30,960 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-21 16:17:30,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 16:17:30,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 16:17:30,960 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-11-21 16:17:30,960 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-11-21 16:17:30,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 16:17:30,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 16:17:30,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:17:30,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:17:30,963 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 16:17:31,139 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:17:31,142 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:17:31,548 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:17:31,558 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:17:31,558 INFO L300 CfgBuilder]: Removed 24 assume(true) statements. [2022-11-21 16:17:31,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:17:31 BoogieIcfgContainer [2022-11-21 16:17:31,561 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:17:31,564 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:17:31,565 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:17:31,568 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:17:31,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:17:30" (1/3) ... [2022-11-21 16:17:31,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57f53112 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:17:31, skipping insertion in model container [2022-11-21 16:17:31,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:17:30" (2/3) ... [2022-11-21 16:17:31,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57f53112 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:17:31, skipping insertion in model container [2022-11-21 16:17:31,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:17:31" (3/3) ... [2022-11-21 16:17:31,571 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_04-munge_racefree.i [2022-11-21 16:17:31,581 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 16:17:31,593 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:17:31,593 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-21 16:17:31,593 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 16:17:31,713 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-21 16:17:31,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 231 places, 258 transitions, 538 flow [2022-11-21 16:17:32,016 INFO L130 PetriNetUnfolder]: 58/476 cut-off events. [2022-11-21 16:17:32,016 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-21 16:17:32,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 496 conditions, 476 events. 58/476 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2361 event pairs, 0 based on Foata normal form. 0/389 useless extension candidates. Maximal degree in co-relation 257. Up to 8 conditions per place. [2022-11-21 16:17:32,033 INFO L82 GeneralOperation]: Start removeDead. Operand has 231 places, 258 transitions, 538 flow [2022-11-21 16:17:32,050 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 231 places, 258 transitions, 538 flow [2022-11-21 16:17:32,068 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:17:32,076 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;@3ada79f2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:17:32,076 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2022-11-21 16:17:32,101 INFO L130 PetriNetUnfolder]: 5/95 cut-off events. [2022-11-21 16:17:32,101 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 16:17:32,101 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:17:32,102 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:17:32,103 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr4ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-21 16:17:32,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:17:32,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1471706223, now seen corresponding path program 1 times [2022-11-21 16:17:32,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:17:32,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295083759] [2022-11-21 16:17:32,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:17:32,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:17:32,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:17:32,443 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 16:17:32,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:17:32,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295083759] [2022-11-21 16:17:32,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295083759] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:17:32,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:17:32,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:17:32,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074615229] [2022-11-21 16:17:32,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:17:32,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-21 16:17:32,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:17:32,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-21 16:17:32,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 16:17:32,519 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 258 [2022-11-21 16:17:32,527 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 258 transitions, 538 flow. Second operand has 2 states, 2 states have (on average 225.0) internal successors, (450), 2 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 16:17:32,527 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:17:32,527 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 258 [2022-11-21 16:17:32,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:17:32,679 INFO L130 PetriNetUnfolder]: 11/426 cut-off events. [2022-11-21 16:17:32,679 INFO L131 PetriNetUnfolder]: For 34/45 co-relation queries the response was YES. [2022-11-21 16:17:32,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 458 conditions, 426 events. 11/426 cut-off events. For 34/45 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2069 event pairs, 0 based on Foata normal form. 95/477 useless extension candidates. Maximal degree in co-relation 229. Up to 12 conditions per place. [2022-11-21 16:17:32,687 INFO L137 encePairwiseOnDemand]: 232/258 looper letters, 6 selfloop transitions, 0 changer transitions 0/230 dead transitions. [2022-11-21 16:17:32,687 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 230 transitions, 494 flow [2022-11-21 16:17:32,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-21 16:17:32,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-21 16:17:32,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 480 transitions. [2022-11-21 16:17:32,709 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9302325581395349 [2022-11-21 16:17:32,710 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 480 transitions. [2022-11-21 16:17:32,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 480 transitions. [2022-11-21 16:17:32,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:17:32,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 480 transitions. [2022-11-21 16:17:32,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 240.0) internal successors, (480), 2 states have internal predecessors, (480), 0 states have call successors, (0), 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 16:17:32,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 258.0) internal successors, (774), 3 states have internal predecessors, (774), 0 states have call successors, (0), 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 16:17:32,731 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 258.0) internal successors, (774), 3 states have internal predecessors, (774), 0 states have call successors, (0), 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 16:17:32,733 INFO L175 Difference]: Start difference. First operand has 231 places, 258 transitions, 538 flow. Second operand 2 states and 480 transitions. [2022-11-21 16:17:32,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 230 transitions, 494 flow [2022-11-21 16:17:32,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 230 transitions, 494 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 16:17:32,744 INFO L231 Difference]: Finished difference. Result has 230 places, 230 transitions, 482 flow [2022-11-21 16:17:32,747 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=482, PETRI_PLACES=230, PETRI_TRANSITIONS=230} [2022-11-21 16:17:32,753 INFO L288 CegarLoopForPetriNet]: 231 programPoint places, -1 predicate places. [2022-11-21 16:17:32,754 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 230 transitions, 482 flow [2022-11-21 16:17:32,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 225.0) internal successors, (450), 2 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 16:17:32,755 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:17:32,755 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:17:32,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 16:17:32,756 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr4ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-21 16:17:32,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:17:32,756 INFO L85 PathProgramCache]: Analyzing trace with hash -206665521, now seen corresponding path program 1 times [2022-11-21 16:17:32,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:17:32,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930522678] [2022-11-21 16:17:32,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:17:32,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:17:32,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:17:33,025 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 16:17:33,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:17:33,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930522678] [2022-11-21 16:17:33,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930522678] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:17:33,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:17:33,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:17:33,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887633225] [2022-11-21 16:17:33,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:17:33,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:17:33,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:17:33,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:17:33,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:17:33,044 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 258 [2022-11-21 16:17:33,045 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 230 transitions, 482 flow. Second operand has 3 states, 3 states have (on average 218.0) internal successors, (654), 3 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:17:33,045 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:17:33,049 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 258 [2022-11-21 16:17:33,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:17:33,178 INFO L130 PetriNetUnfolder]: 8/341 cut-off events. [2022-11-21 16:17:33,178 INFO L131 PetriNetUnfolder]: For 34/56 co-relation queries the response was YES. [2022-11-21 16:17:33,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 341 events. 8/341 cut-off events. For 34/56 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1239 event pairs, 0 based on Foata normal form. 2/310 useless extension candidates. Maximal degree in co-relation 374. Up to 15 conditions per place. [2022-11-21 16:17:33,184 INFO L137 encePairwiseOnDemand]: 255/258 looper letters, 13 selfloop transitions, 2 changer transitions 0/232 dead transitions. [2022-11-21 16:17:33,184 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 232 transitions, 516 flow [2022-11-21 16:17:33,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:17:33,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 16:17:33,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 667 transitions. [2022-11-21 16:17:33,188 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8617571059431525 [2022-11-21 16:17:33,188 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 667 transitions. [2022-11-21 16:17:33,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 667 transitions. [2022-11-21 16:17:33,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:17:33,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 667 transitions. [2022-11-21 16:17:33,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 222.33333333333334) internal successors, (667), 3 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:17:33,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 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 16:17:33,196 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 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 16:17:33,196 INFO L175 Difference]: Start difference. First operand has 230 places, 230 transitions, 482 flow. Second operand 3 states and 667 transitions. [2022-11-21 16:17:33,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 232 transitions, 516 flow [2022-11-21 16:17:33,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 232 transitions, 516 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 16:17:33,207 INFO L231 Difference]: Finished difference. Result has 233 places, 230 transitions, 490 flow [2022-11-21 16:17:33,207 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=490, PETRI_PLACES=233, PETRI_TRANSITIONS=230} [2022-11-21 16:17:33,208 INFO L288 CegarLoopForPetriNet]: 231 programPoint places, 2 predicate places. [2022-11-21 16:17:33,208 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 230 transitions, 490 flow [2022-11-21 16:17:33,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 218.0) internal successors, (654), 3 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:17:33,209 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:17:33,210 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:17:33,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 16:17:33,210 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr4ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-21 16:17:33,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:17:33,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1504860397, now seen corresponding path program 1 times [2022-11-21 16:17:33,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:17:33,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336177934] [2022-11-21 16:17:33,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:17:33,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:17:33,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:17:33,275 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 16:17:33,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:17:33,359 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 16:17:33,359 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-21 16:17:33,361 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (23 of 24 remaining) [2022-11-21 16:17:33,363 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4ASSERT_VIOLATIONDATA_RACE (22 of 24 remaining) [2022-11-21 16:17:33,363 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONDATA_RACE (21 of 24 remaining) [2022-11-21 16:17:33,363 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONDATA_RACE (20 of 24 remaining) [2022-11-21 16:17:33,364 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONDATA_RACE (19 of 24 remaining) [2022-11-21 16:17:33,364 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONDATA_RACE (18 of 24 remaining) [2022-11-21 16:17:33,364 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (17 of 24 remaining) [2022-11-21 16:17:33,364 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 24 remaining) [2022-11-21 16:17:33,364 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 24 remaining) [2022-11-21 16:17:33,365 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 24 remaining) [2022-11-21 16:17:33,365 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 24 remaining) [2022-11-21 16:17:33,365 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 24 remaining) [2022-11-21 16:17:33,366 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1ASSERT_VIOLATIONDATA_RACE (11 of 24 remaining) [2022-11-21 16:17:33,372 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 24 remaining) [2022-11-21 16:17:33,372 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 24 remaining) [2022-11-21 16:17:33,372 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 24 remaining) [2022-11-21 16:17:33,372 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 24 remaining) [2022-11-21 16:17:33,372 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 24 remaining) [2022-11-21 16:17:33,373 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 24 remaining) [2022-11-21 16:17:33,374 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 24 remaining) [2022-11-21 16:17:33,374 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 24 remaining) [2022-11-21 16:17:33,374 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 24 remaining) [2022-11-21 16:17:33,374 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 24 remaining) [2022-11-21 16:17:33,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 24 remaining) [2022-11-21 16:17:33,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 16:17:33,376 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-21 16:17:33,379 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-21 16:17:33,379 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-21 16:17:33,496 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-11-21 16:17:33,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 363 places, 414 transitions, 876 flow [2022-11-21 16:17:33,939 INFO L130 PetriNetUnfolder]: 197/1425 cut-off events. [2022-11-21 16:17:33,939 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2022-11-21 16:17:33,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1522 conditions, 1425 events. 197/1425 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 9376 event pairs, 1 based on Foata normal form. 0/1169 useless extension candidates. Maximal degree in co-relation 859. Up to 32 conditions per place. [2022-11-21 16:17:33,970 INFO L82 GeneralOperation]: Start removeDead. Operand has 363 places, 414 transitions, 876 flow [2022-11-21 16:17:33,998 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 363 places, 414 transitions, 876 flow [2022-11-21 16:17:34,009 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:17:34,010 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;@3ada79f2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:17:34,011 INFO L358 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2022-11-21 16:17:34,023 INFO L130 PetriNetUnfolder]: 5/94 cut-off events. [2022-11-21 16:17:34,023 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 16:17:34,023 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:17:34,023 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:17:34,024 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr4ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE (and 30 more)] === [2022-11-21 16:17:34,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:17:34,024 INFO L85 PathProgramCache]: Analyzing trace with hash -718341137, now seen corresponding path program 1 times [2022-11-21 16:17:34,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:17:34,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788421244] [2022-11-21 16:17:34,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:17:34,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:17:34,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:17:34,068 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 16:17:34,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:17:34,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788421244] [2022-11-21 16:17:34,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788421244] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:17:34,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:17:34,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:17:34,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117185397] [2022-11-21 16:17:34,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:17:34,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-21 16:17:34,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:17:34,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-21 16:17:34,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 16:17:34,071 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 350 out of 414 [2022-11-21 16:17:34,072 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 414 transitions, 876 flow. Second operand has 2 states, 2 states have (on average 351.0) internal successors, (702), 2 states have internal predecessors, (702), 0 states have call successors, (0), 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 16:17:34,072 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:17:34,072 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 350 of 414 [2022-11-21 16:17:34,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:17:34,469 INFO L130 PetriNetUnfolder]: 65/1285 cut-off events. [2022-11-21 16:17:34,469 INFO L131 PetriNetUnfolder]: For 247/338 co-relation queries the response was YES. [2022-11-21 16:17:34,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1455 conditions, 1285 events. 65/1285 cut-off events. For 247/338 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 8894 event pairs, 1 based on Foata normal form. 790/1934 useless extension candidates. Maximal degree in co-relation 803. Up to 73 conditions per place. [2022-11-21 16:17:34,505 INFO L137 encePairwiseOnDemand]: 366/414 looper letters, 12 selfloop transitions, 0 changer transitions 0/362 dead transitions. [2022-11-21 16:17:34,505 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 362 transitions, 796 flow [2022-11-21 16:17:34,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-21 16:17:34,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-21 16:17:34,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 760 transitions. [2022-11-21 16:17:34,507 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9178743961352657 [2022-11-21 16:17:34,508 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 760 transitions. [2022-11-21 16:17:34,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 760 transitions. [2022-11-21 16:17:34,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:17:34,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 760 transitions. [2022-11-21 16:17:34,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 380.0) internal successors, (760), 2 states have internal predecessors, (760), 0 states have call successors, (0), 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 16:17:34,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 414.0) internal successors, (1242), 3 states have internal predecessors, (1242), 0 states have call successors, (0), 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 16:17:34,513 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 414.0) internal successors, (1242), 3 states have internal predecessors, (1242), 0 states have call successors, (0), 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 16:17:34,513 INFO L175 Difference]: Start difference. First operand has 363 places, 414 transitions, 876 flow. Second operand 2 states and 760 transitions. [2022-11-21 16:17:34,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 362 transitions, 796 flow [2022-11-21 16:17:34,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 362 transitions, 796 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 16:17:34,525 INFO L231 Difference]: Finished difference. Result has 360 places, 362 transitions, 772 flow [2022-11-21 16:17:34,525 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=772, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=772, PETRI_PLACES=360, PETRI_TRANSITIONS=362} [2022-11-21 16:17:34,526 INFO L288 CegarLoopForPetriNet]: 363 programPoint places, -3 predicate places. [2022-11-21 16:17:34,526 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 362 transitions, 772 flow [2022-11-21 16:17:34,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 351.0) internal successors, (702), 2 states have internal predecessors, (702), 0 states have call successors, (0), 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 16:17:34,527 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:17:34,527 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:17:34,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 16:17:34,528 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr4ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE (and 30 more)] === [2022-11-21 16:17:34,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:17:34,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1898254415, now seen corresponding path program 1 times [2022-11-21 16:17:34,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:17:34,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769344694] [2022-11-21 16:17:34,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:17:34,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:17:34,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:17:34,596 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 16:17:34,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:17:34,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769344694] [2022-11-21 16:17:34,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769344694] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:17:34,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:17:34,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:17:34,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208264133] [2022-11-21 16:17:34,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:17:34,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:17:34,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:17:34,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:17:34,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:17:34,601 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 343 out of 414 [2022-11-21 16:17:34,602 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 362 transitions, 772 flow. Second operand has 3 states, 3 states have (on average 344.0) internal successors, (1032), 3 states have internal predecessors, (1032), 0 states have call successors, (0), 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 16:17:34,602 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:17:34,602 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 343 of 414 [2022-11-21 16:17:34,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:17:34,985 INFO L130 PetriNetUnfolder]: 60/1125 cut-off events. [2022-11-21 16:17:34,986 INFO L131 PetriNetUnfolder]: For 243/398 co-relation queries the response was YES. [2022-11-21 16:17:35,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1301 conditions, 1125 events. 60/1125 cut-off events. For 243/398 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 7286 event pairs, 2 based on Foata normal form. 2/1006 useless extension candidates. Maximal degree in co-relation 1294. Up to 80 conditions per place. [2022-11-21 16:17:35,030 INFO L137 encePairwiseOnDemand]: 411/414 looper letters, 21 selfloop transitions, 2 changer transitions 0/366 dead transitions. [2022-11-21 16:17:35,030 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 366 transitions, 826 flow [2022-11-21 16:17:35,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:17:35,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 16:17:35,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1053 transitions. [2022-11-21 16:17:35,033 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8478260869565217 [2022-11-21 16:17:35,033 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1053 transitions. [2022-11-21 16:17:35,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1053 transitions. [2022-11-21 16:17:35,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:17:35,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1053 transitions. [2022-11-21 16:17:35,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 351.0) internal successors, (1053), 3 states have internal predecessors, (1053), 0 states have call successors, (0), 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 16:17:35,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 414.0) internal successors, (1656), 4 states have internal predecessors, (1656), 0 states have call successors, (0), 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 16:17:35,044 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 414.0) internal successors, (1656), 4 states have internal predecessors, (1656), 0 states have call successors, (0), 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 16:17:35,044 INFO L175 Difference]: Start difference. First operand has 360 places, 362 transitions, 772 flow. Second operand 3 states and 1053 transitions. [2022-11-21 16:17:35,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 366 transitions, 826 flow [2022-11-21 16:17:35,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 366 transitions, 826 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 16:17:35,054 INFO L231 Difference]: Finished difference. Result has 363 places, 363 transitions, 784 flow [2022-11-21 16:17:35,055 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=772, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=784, PETRI_PLACES=363, PETRI_TRANSITIONS=363} [2022-11-21 16:17:35,057 INFO L288 CegarLoopForPetriNet]: 363 programPoint places, 0 predicate places. [2022-11-21 16:17:35,057 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 363 transitions, 784 flow [2022-11-21 16:17:35,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 344.0) internal successors, (1032), 3 states have internal predecessors, (1032), 0 states have call successors, (0), 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 16:17:35,058 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:17:35,058 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:17:35,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 16:17:35,059 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1_funErr4ASSERT_VIOLATIONDATA_RACE === [t2_funErr4ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE (and 30 more)] === [2022-11-21 16:17:35,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:17:35,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1811770177, now seen corresponding path program 1 times [2022-11-21 16:17:35,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:17:35,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728444470] [2022-11-21 16:17:35,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:17:35,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:17:35,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:17:35,148 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 16:17:35,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:17:35,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728444470] [2022-11-21 16:17:35,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728444470] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:17:35,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:17:35,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:17:35,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208991751] [2022-11-21 16:17:35,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:17:35,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:17:35,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:17:35,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:17:35,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:17:35,154 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 414 [2022-11-21 16:17:35,155 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 363 transitions, 784 flow. Second operand has 3 states, 3 states have (on average 291.0) internal successors, (873), 3 states have internal predecessors, (873), 0 states have call successors, (0), 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 16:17:35,155 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:17:35,155 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 414 [2022-11-21 16:17:35,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand