./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_20-callback_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version e04fb08f 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_6a763852-36ba-4fe0-ad7c-3a23be9a2ed3/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a763852-36ba-4fe0-ad7c-3a23be9a2ed3/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a763852-36ba-4fe0-ad7c-3a23be9a2ed3/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a763852-36ba-4fe0-ad7c-3a23be9a2ed3/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_20-callback_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a763852-36ba-4fe0-ad7c-3a23be9a2ed3/bin/uautomizer-tPACEb0tL8/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a763852-36ba-4fe0-ad7c-3a23be9a2ed3/bin/uautomizer-tPACEb0tL8 --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 4e91816f101a416d37c086dd7185cfb4e2bfa63eb286e4a418cb94db27cf2f6f --- 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-e04fb08 [2022-11-16 11:33:56,052 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:33:56,058 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:33:56,106 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:33:56,109 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:33:56,113 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:33:56,116 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:33:56,120 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:33:56,123 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:33:56,130 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:33:56,131 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:33:56,133 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:33:56,135 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:33:56,138 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:33:56,140 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:33:56,143 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:33:56,145 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:33:56,146 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:33:56,148 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:33:56,158 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:33:56,160 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:33:56,162 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:33:56,163 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:33:56,164 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:33:56,172 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:33:56,172 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:33:56,173 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:33:56,174 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:33:56,174 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:33:56,176 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:33:56,176 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:33:56,177 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:33:56,178 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:33:56,184 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:33:56,187 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:33:56,187 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:33:56,188 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:33:56,188 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:33:56,189 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:33:56,190 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:33:56,191 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:33:56,192 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a763852-36ba-4fe0-ad7c-3a23be9a2ed3/bin/uautomizer-tPACEb0tL8/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-16 11:33:56,238 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:33:56,239 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:33:56,239 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:33:56,240 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:33:56,241 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:33:56,241 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:33:56,242 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:33:56,242 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:33:56,243 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:33:56,243 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:33:56,244 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:33:56,245 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:33:56,245 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:33:56,245 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:33:56,246 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:33:56,246 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:33:56,246 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:33:56,247 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:33:56,247 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-16 11:33:56,247 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:33:56,248 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:33:56,248 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:33:56,248 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:33:56,249 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:33:56,249 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:33:56,249 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:33:56,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:33:56,251 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:33:56,252 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:33:56,252 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:33:56,252 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:33:56,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:33:56,253 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:33:56,253 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:33:56,254 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:33:56,254 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_6a763852-36ba-4fe0-ad7c-3a23be9a2ed3/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a763852-36ba-4fe0-ad7c-3a23be9a2ed3/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e91816f101a416d37c086dd7185cfb4e2bfa63eb286e4a418cb94db27cf2f6f [2022-11-16 11:33:56,600 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:33:56,635 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:33:56,638 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:33:56,639 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:33:56,641 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:33:56,643 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a763852-36ba-4fe0-ad7c-3a23be9a2ed3/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/goblint-regression/28-race_reach_20-callback_racefree.i [2022-11-16 11:33:56,745 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a763852-36ba-4fe0-ad7c-3a23be9a2ed3/bin/uautomizer-tPACEb0tL8/data/1df6c27ec/5729a71b4d6848deb86aee3a169b1d42/FLAGdad2a7c30 [2022-11-16 11:33:57,362 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:33:57,363 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a763852-36ba-4fe0-ad7c-3a23be9a2ed3/sv-benchmarks/c/goblint-regression/28-race_reach_20-callback_racefree.i [2022-11-16 11:33:57,395 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a763852-36ba-4fe0-ad7c-3a23be9a2ed3/bin/uautomizer-tPACEb0tL8/data/1df6c27ec/5729a71b4d6848deb86aee3a169b1d42/FLAGdad2a7c30 [2022-11-16 11:33:57,640 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a763852-36ba-4fe0-ad7c-3a23be9a2ed3/bin/uautomizer-tPACEb0tL8/data/1df6c27ec/5729a71b4d6848deb86aee3a169b1d42 [2022-11-16 11:33:57,644 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:33:57,647 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:33:57,651 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:33:57,651 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:33:57,655 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:33:57,656 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:33:57" (1/1) ... [2022-11-16 11:33:57,658 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e29888a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:57, skipping insertion in model container [2022-11-16 11:33:57,658 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:33:57" (1/1) ... [2022-11-16 11:33:57,666 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:33:57,701 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:33:58,099 WARN L229 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_6a763852-36ba-4fe0-ad7c-3a23be9a2ed3/sv-benchmarks/c/goblint-regression/28-race_reach_20-callback_racefree.i[30212,30225] [2022-11-16 11:33:58,147 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:33:58,173 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:33:58,244 WARN L229 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_6a763852-36ba-4fe0-ad7c-3a23be9a2ed3/sv-benchmarks/c/goblint-regression/28-race_reach_20-callback_racefree.i[30212,30225] [2022-11-16 11:33:58,254 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:33:58,302 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:33:58,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:58 WrapperNode [2022-11-16 11:33:58,303 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:33:58,304 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:33:58,305 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:33:58,305 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:33:58,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:58" (1/1) ... [2022-11-16 11:33:58,329 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:58" (1/1) ... [2022-11-16 11:33:58,359 INFO L138 Inliner]: procedures = 173, calls = 33, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 153 [2022-11-16 11:33:58,360 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:33:58,360 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:33:58,361 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:33:58,361 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:33:58,372 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:58" (1/1) ... [2022-11-16 11:33:58,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:58" (1/1) ... [2022-11-16 11:33:58,376 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:58" (1/1) ... [2022-11-16 11:33:58,376 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:58" (1/1) ... [2022-11-16 11:33:58,384 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:58" (1/1) ... [2022-11-16 11:33:58,390 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:58" (1/1) ... [2022-11-16 11:33:58,392 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:58" (1/1) ... [2022-11-16 11:33:58,394 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:58" (1/1) ... [2022-11-16 11:33:58,397 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:33:58,398 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:33:58,398 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:33:58,398 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:33:58,399 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:58" (1/1) ... [2022-11-16 11:33:58,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:33:58,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a763852-36ba-4fe0-ad7c-3a23be9a2ed3/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:33:58,434 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a763852-36ba-4fe0-ad7c-3a23be9a2ed3/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:33:58,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a763852-36ba-4fe0-ad7c-3a23be9a2ed3/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:33:58,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:33:58,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:33:58,502 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 11:33:58,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:33:58,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:33:58,503 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-16 11:33:58,503 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-16 11:33:58,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:33:58,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:33:58,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:33:58,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:33:58,506 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:33:58,728 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:33:58,731 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:33:59,135 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:33:59,145 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:33:59,146 INFO L300 CfgBuilder]: Removed 11 assume(true) statements. [2022-11-16 11:33:59,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:33:59 BoogieIcfgContainer [2022-11-16 11:33:59,149 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:33:59,152 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:33:59,152 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:33:59,156 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:33:59,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:33:57" (1/3) ... [2022-11-16 11:33:59,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17ea64fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:33:59, skipping insertion in model container [2022-11-16 11:33:59,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:58" (2/3) ... [2022-11-16 11:33:59,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17ea64fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:33:59, skipping insertion in model container [2022-11-16 11:33:59,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:33:59" (3/3) ... [2022-11-16 11:33:59,160 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_20-callback_racefree.i [2022-11-16 11:33:59,170 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:33:59,183 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:33:59,183 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-16 11:33:59,184 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:33:59,270 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-16 11:33:59,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 172 transitions, 352 flow [2022-11-16 11:33:59,444 INFO L130 PetriNetUnfolder]: 26/270 cut-off events. [2022-11-16 11:33:59,445 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 11:33:59,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276 conditions, 270 events. 26/270 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 842 event pairs, 0 based on Foata normal form. 0/230 useless extension candidates. Maximal degree in co-relation 136. Up to 6 conditions per place. [2022-11-16 11:33:59,452 INFO L82 GeneralOperation]: Start removeDead. Operand has 160 places, 172 transitions, 352 flow [2022-11-16 11:33:59,459 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 160 places, 172 transitions, 352 flow [2022-11-16 11:33:59,471 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:33:59,479 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;@51a3e10d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:33:59,479 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-11-16 11:33:59,503 INFO L130 PetriNetUnfolder]: 4/84 cut-off events. [2022-11-16 11:33:59,503 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:33:59,503 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:33:59,504 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] [2022-11-16 11:33:59,505 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2022-11-16 11:33:59,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:59,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1667293018, now seen corresponding path program 1 times [2022-11-16 11:33:59,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:33:59,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671143216] [2022-11-16 11:33:59,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:59,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:33:59,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:59,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:33:59,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:33:59,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671143216] [2022-11-16 11:33:59,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671143216] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:59,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:33:59,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:33:59,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009403035] [2022-11-16 11:33:59,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:59,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:33:59,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:34:00,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:34:00,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:34:00,030 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 172 [2022-11-16 11:34:00,041 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 172 transitions, 352 flow. Second operand has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:00,041 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:34:00,042 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 172 [2022-11-16 11:34:00,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:34:00,313 INFO L130 PetriNetUnfolder]: 39/573 cut-off events. [2022-11-16 11:34:00,314 INFO L131 PetriNetUnfolder]: For 7/9 co-relation queries the response was YES. [2022-11-16 11:34:00,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 680 conditions, 573 events. 39/573 cut-off events. For 7/9 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2361 event pairs, 8 based on Foata normal form. 87/608 useless extension candidates. Maximal degree in co-relation 507. Up to 61 conditions per place. [2022-11-16 11:34:00,319 INFO L137 encePairwiseOnDemand]: 151/172 looper letters, 18 selfloop transitions, 6 changer transitions 0/166 dead transitions. [2022-11-16 11:34:00,319 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 166 transitions, 391 flow [2022-11-16 11:34:00,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:34:00,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:34:00,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 477 transitions. [2022-11-16 11:34:00,338 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9244186046511628 [2022-11-16 11:34:00,339 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 477 transitions. [2022-11-16 11:34:00,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 477 transitions. [2022-11-16 11:34:00,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:34:00,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 477 transitions. [2022-11-16 11:34:00,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:00,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:00,365 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:00,367 INFO L175 Difference]: Start difference. First operand has 160 places, 172 transitions, 352 flow. Second operand 3 states and 477 transitions. [2022-11-16 11:34:00,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 166 transitions, 391 flow [2022-11-16 11:34:00,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 166 transitions, 391 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:34:00,382 INFO L231 Difference]: Finished difference. Result has 161 places, 161 transitions, 364 flow [2022-11-16 11:34:00,384 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=364, PETRI_PLACES=161, PETRI_TRANSITIONS=161} [2022-11-16 11:34:00,389 INFO L288 CegarLoopForPetriNet]: 160 programPoint places, 1 predicate places. [2022-11-16 11:34:00,390 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 161 transitions, 364 flow [2022-11-16 11:34:00,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:00,392 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:34:00,393 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] [2022-11-16 11:34:00,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:34:00,393 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2022-11-16 11:34:00,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:00,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1587400345, now seen corresponding path program 1 times [2022-11-16 11:34:00,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:34:00,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951527698] [2022-11-16 11:34:00,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:00,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:34:00,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:34:00,476 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:34:00,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:34:00,569 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:34:00,571 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:34:00,573 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2022-11-16 11:34:00,575 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (6 of 8 remaining) [2022-11-16 11:34:00,576 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (5 of 8 remaining) [2022-11-16 11:34:00,577 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (4 of 8 remaining) [2022-11-16 11:34:00,580 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (3 of 8 remaining) [2022-11-16 11:34:00,580 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (2 of 8 remaining) [2022-11-16 11:34:00,581 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (1 of 8 remaining) [2022-11-16 11:34:00,581 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (0 of 8 remaining) [2022-11-16 11:34:00,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:34:00,583 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-16 11:34:00,597 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 11:34:00,597 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-16 11:34:00,650 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 11:34:00,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 184 places, 198 transitions, 414 flow [2022-11-16 11:34:00,745 INFO L130 PetriNetUnfolder]: 43/425 cut-off events. [2022-11-16 11:34:00,745 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-16 11:34:00,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 439 conditions, 425 events. 43/425 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1679 event pairs, 0 based on Foata normal form. 0/360 useless extension candidates. Maximal degree in co-relation 272. Up to 9 conditions per place. [2022-11-16 11:34:00,749 INFO L82 GeneralOperation]: Start removeDead. Operand has 184 places, 198 transitions, 414 flow [2022-11-16 11:34:00,754 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 184 places, 198 transitions, 414 flow [2022-11-16 11:34:00,755 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:34:00,758 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;@51a3e10d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:34:00,759 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-11-16 11:34:00,773 INFO L130 PetriNetUnfolder]: 4/85 cut-off events. [2022-11-16 11:34:00,773 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:34:00,773 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:34:00,773 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] [2022-11-16 11:34:00,778 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-16 11:34:00,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:00,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1424802046, now seen corresponding path program 1 times [2022-11-16 11:34:00,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:34:00,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597465959] [2022-11-16 11:34:00,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:00,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:34:00,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:00,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:34:00,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:34:00,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597465959] [2022-11-16 11:34:00,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597465959] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:34:00,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:34:00,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:34:00,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458024930] [2022-11-16 11:34:00,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:34:00,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:34:00,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:34:00,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:34:00,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:34:00,896 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 198 [2022-11-16 11:34:00,897 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 198 transitions, 414 flow. Second operand has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 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) [2022-11-16 11:34:00,897 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:34:00,897 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 198 [2022-11-16 11:34:00,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:34:01,509 INFO L130 PetriNetUnfolder]: 360/2676 cut-off events. [2022-11-16 11:34:01,509 INFO L131 PetriNetUnfolder]: For 87/125 co-relation queries the response was YES. [2022-11-16 11:34:01,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3383 conditions, 2676 events. 360/2676 cut-off events. For 87/125 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 20970 event pairs, 101 based on Foata normal form. 605/2974 useless extension candidates. Maximal degree in co-relation 1671. Up to 469 conditions per place. [2022-11-16 11:34:01,534 INFO L137 encePairwiseOnDemand]: 171/198 looper letters, 25 selfloop transitions, 8 changer transitions 0/192 dead transitions. [2022-11-16 11:34:01,534 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 192 transitions, 479 flow [2022-11-16 11:34:01,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:34:01,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:34:01,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 544 transitions. [2022-11-16 11:34:01,539 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9158249158249159 [2022-11-16 11:34:01,540 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 544 transitions. [2022-11-16 11:34:01,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 544 transitions. [2022-11-16 11:34:01,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:34:01,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 544 transitions. [2022-11-16 11:34:01,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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) [2022-11-16 11:34:01,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:01,546 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:01,547 INFO L175 Difference]: Start difference. First operand has 184 places, 198 transitions, 414 flow. Second operand 3 states and 544 transitions. [2022-11-16 11:34:01,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 192 transitions, 479 flow [2022-11-16 11:34:01,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 192 transitions, 479 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:34:01,558 INFO L231 Difference]: Finished difference. Result has 184 places, 185 transitions, 436 flow [2022-11-16 11:34:01,558 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=436, PETRI_PLACES=184, PETRI_TRANSITIONS=185} [2022-11-16 11:34:01,559 INFO L288 CegarLoopForPetriNet]: 184 programPoint places, 0 predicate places. [2022-11-16 11:34:01,560 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 185 transitions, 436 flow [2022-11-16 11:34:01,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 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) [2022-11-16 11:34:01,561 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:34:01,561 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] [2022-11-16 11:34:01,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:34:01,563 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-16 11:34:01,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:01,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1065411061, now seen corresponding path program 1 times [2022-11-16 11:34:01,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:34:01,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576167864] [2022-11-16 11:34:01,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:01,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:34:01,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:01,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:34:01,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:34:01,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576167864] [2022-11-16 11:34:01,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576167864] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:34:01,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:34:01,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:34:01,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799412038] [2022-11-16 11:34:01,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:34:01,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:34:01,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:34:01,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:34:01,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:34:01,686 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 198 [2022-11-16 11:34:01,687 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 185 transitions, 436 flow. Second operand has 3 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:01,687 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:34:01,687 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 198 [2022-11-16 11:34:01,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:34:02,053 INFO L130 PetriNetUnfolder]: 147/1890 cut-off events. [2022-11-16 11:34:02,053 INFO L131 PetriNetUnfolder]: For 173/206 co-relation queries the response was YES. [2022-11-16 11:34:02,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2319 conditions, 1890 events. 147/1890 cut-off events. For 173/206 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 13925 event pairs, 39 based on Foata normal form. 0/1703 useless extension candidates. Maximal degree in co-relation 1716. Up to 182 conditions per place. [2022-11-16 11:34:02,071 INFO L137 encePairwiseOnDemand]: 195/198 looper letters, 13 selfloop transitions, 2 changer transitions 0/189 dead transitions. [2022-11-16 11:34:02,072 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 189 transitions, 474 flow [2022-11-16 11:34:02,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:34:02,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:34:02,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 526 transitions. [2022-11-16 11:34:02,074 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8855218855218855 [2022-11-16 11:34:02,074 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 526 transitions. [2022-11-16 11:34:02,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 526 transitions. [2022-11-16 11:34:02,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:34:02,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 526 transitions. [2022-11-16 11:34:02,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:02,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:02,079 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:02,079 INFO L175 Difference]: Start difference. First operand has 184 places, 185 transitions, 436 flow. Second operand 3 states and 526 transitions. [2022-11-16 11:34:02,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 189 transitions, 474 flow [2022-11-16 11:34:02,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 189 transitions, 458 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:34:02,094 INFO L231 Difference]: Finished difference. Result has 185 places, 186 transitions, 432 flow [2022-11-16 11:34:02,095 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=432, PETRI_PLACES=185, PETRI_TRANSITIONS=186} [2022-11-16 11:34:02,097 INFO L288 CegarLoopForPetriNet]: 184 programPoint places, 1 predicate places. [2022-11-16 11:34:02,098 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 186 transitions, 432 flow [2022-11-16 11:34:02,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:02,098 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:34:02,099 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:34:02,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:34:02,100 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-16 11:34:02,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:02,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1000160167, now seen corresponding path program 1 times [2022-11-16 11:34:02,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:34:02,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514959470] [2022-11-16 11:34:02,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:02,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:34:02,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:34:02,152 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:34:02,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:34:02,175 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:34:02,175 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:34:02,175 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2022-11-16 11:34:02,175 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (7 of 9 remaining) [2022-11-16 11:34:02,176 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (6 of 9 remaining) [2022-11-16 11:34:02,176 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (5 of 9 remaining) [2022-11-16 11:34:02,176 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (4 of 9 remaining) [2022-11-16 11:34:02,176 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (3 of 9 remaining) [2022-11-16 11:34:02,176 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (2 of 9 remaining) [2022-11-16 11:34:02,177 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (1 of 9 remaining) [2022-11-16 11:34:02,177 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (0 of 9 remaining) [2022-11-16 11:34:02,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:34:02,177 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-16 11:34:02,178 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 11:34:02,178 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-16 11:34:02,209 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 11:34:02,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 208 places, 224 transitions, 478 flow [2022-11-16 11:34:02,317 INFO L130 PetriNetUnfolder]: 65/625 cut-off events. [2022-11-16 11:34:02,317 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-16 11:34:02,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 653 conditions, 625 events. 65/625 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2804 event pairs, 1 based on Foata normal form. 0/529 useless extension candidates. Maximal degree in co-relation 433. Up to 16 conditions per place. [2022-11-16 11:34:02,323 INFO L82 GeneralOperation]: Start removeDead. Operand has 208 places, 224 transitions, 478 flow [2022-11-16 11:34:02,329 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 208 places, 224 transitions, 478 flow [2022-11-16 11:34:02,331 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:34:02,333 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;@51a3e10d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:34:02,334 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-16 11:34:02,342 INFO L130 PetriNetUnfolder]: 4/86 cut-off events. [2022-11-16 11:34:02,343 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:34:02,343 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:34:02,343 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] [2022-11-16 11:34:02,343 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2022-11-16 11:34:02,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:02,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1544347162, now seen corresponding path program 1 times [2022-11-16 11:34:02,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:34:02,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65189712] [2022-11-16 11:34:02,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:02,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:34:02,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:02,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:34:02,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:34:02,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65189712] [2022-11-16 11:34:02,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65189712] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:34:02,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:34:02,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:34:02,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072291328] [2022-11-16 11:34:02,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:34:02,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:34:02,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:34:02,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:34:02,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:34:02,414 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 224 [2022-11-16 11:34:02,415 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 224 transitions, 478 flow. Second operand has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:02,415 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:34:02,416 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 224 [2022-11-16 11:34:02,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:34:05,026 INFO L130 PetriNetUnfolder]: 2387/11988 cut-off events. [2022-11-16 11:34:05,027 INFO L131 PetriNetUnfolder]: For 795/1088 co-relation queries the response was YES. [2022-11-16 11:34:05,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15991 conditions, 11988 events. 2387/11988 cut-off events. For 795/1088 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 131191 event pairs, 963 based on Foata normal form. 3466/13914 useless extension candidates. Maximal degree in co-relation 11984. Up to 2804 conditions per place. [2022-11-16 11:34:05,170 INFO L137 encePairwiseOnDemand]: 191/224 looper letters, 32 selfloop transitions, 10 changer transitions 0/218 dead transitions. [2022-11-16 11:34:05,171 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 218 transitions, 571 flow [2022-11-16 11:34:05,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:34:05,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:34:05,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 611 transitions. [2022-11-16 11:34:05,175 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9092261904761905 [2022-11-16 11:34:05,175 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 611 transitions. [2022-11-16 11:34:05,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 611 transitions. [2022-11-16 11:34:05,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:34:05,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 611 transitions. [2022-11-16 11:34:05,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 203.66666666666666) internal successors, (611), 3 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:05,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:05,182 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:05,183 INFO L175 Difference]: Start difference. First operand has 208 places, 224 transitions, 478 flow. Second operand 3 states and 611 transitions. [2022-11-16 11:34:05,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 218 transitions, 571 flow [2022-11-16 11:34:05,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 218 transitions, 571 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:34:05,191 INFO L231 Difference]: Finished difference. Result has 207 places, 209 transitions, 510 flow [2022-11-16 11:34:05,191 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=432, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=510, PETRI_PLACES=207, PETRI_TRANSITIONS=209} [2022-11-16 11:34:05,192 INFO L288 CegarLoopForPetriNet]: 208 programPoint places, -1 predicate places. [2022-11-16 11:34:05,193 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 209 transitions, 510 flow [2022-11-16 11:34:05,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:05,194 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:34:05,194 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] [2022-11-16 11:34:05,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:34:05,194 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2022-11-16 11:34:05,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:05,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1774529035, now seen corresponding path program 1 times [2022-11-16 11:34:05,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:34:05,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823827006] [2022-11-16 11:34:05,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:05,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:34:05,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:05,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:34:05,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:34:05,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823827006] [2022-11-16 11:34:05,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823827006] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:34:05,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:34:05,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:34:05,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020384289] [2022-11-16 11:34:05,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:34:05,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:34:05,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:34:05,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:34:05,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:34:05,265 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 224 [2022-11-16 11:34:05,266 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 209 transitions, 510 flow. Second operand has 3 states, 3 states have (on average 191.0) internal successors, (573), 3 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:05,267 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:34:05,267 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 224 [2022-11-16 11:34:05,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:34:06,863 INFO L130 PetriNetUnfolder]: 904/7793 cut-off events. [2022-11-16 11:34:06,863 INFO L131 PetriNetUnfolder]: For 873/1070 co-relation queries the response was YES. [2022-11-16 11:34:06,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9963 conditions, 7793 events. 904/7793 cut-off events. For 873/1070 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 84659 event pairs, 341 based on Foata normal form. 0/7011 useless extension candidates. Maximal degree in co-relation 7281. Up to 1026 conditions per place. [2022-11-16 11:34:06,933 INFO L137 encePairwiseOnDemand]: 221/224 looper letters, 15 selfloop transitions, 2 changer transitions 0/213 dead transitions. [2022-11-16 11:34:06,934 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 213 transitions, 552 flow [2022-11-16 11:34:06,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:34:06,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:34:06,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 588 transitions. [2022-11-16 11:34:06,937 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.875 [2022-11-16 11:34:06,937 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 588 transitions. [2022-11-16 11:34:06,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 588 transitions. [2022-11-16 11:34:06,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:34:06,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 588 transitions. [2022-11-16 11:34:06,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 196.0) internal successors, (588), 3 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:06,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:06,942 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:06,943 INFO L175 Difference]: Start difference. First operand has 207 places, 209 transitions, 510 flow. Second operand 3 states and 588 transitions. [2022-11-16 11:34:06,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 213 transitions, 552 flow [2022-11-16 11:34:06,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 213 transitions, 532 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:34:06,952 INFO L231 Difference]: Finished difference. Result has 208 places, 210 transitions, 502 flow [2022-11-16 11:34:06,953 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=502, PETRI_PLACES=208, PETRI_TRANSITIONS=210} [2022-11-16 11:34:06,954 INFO L288 CegarLoopForPetriNet]: 208 programPoint places, 0 predicate places. [2022-11-16 11:34:06,954 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 210 transitions, 502 flow [2022-11-16 11:34:06,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 191.0) internal successors, (573), 3 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:06,956 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:34:06,956 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:34:06,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:34:06,957 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2022-11-16 11:34:06,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:06,958 INFO L85 PathProgramCache]: Analyzing trace with hash -506022014, now seen corresponding path program 1 times [2022-11-16 11:34:06,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:34:06,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671980504] [2022-11-16 11:34:06,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:06,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:34:06,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:07,067 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:34:07,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:34:07,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671980504] [2022-11-16 11:34:07,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671980504] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:34:07,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559446549] [2022-11-16 11:34:07,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:07,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:34:07,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a763852-36ba-4fe0-ad7c-3a23be9a2ed3/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:34:07,073 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a763852-36ba-4fe0-ad7c-3a23be9a2ed3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:34:07,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a763852-36ba-4fe0-ad7c-3a23be9a2ed3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:34:07,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:07,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 11:34:07,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:34:07,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:34:07,254 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:34:07,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559446549] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:34:07,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:34:07,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-16 11:34:07,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262027051] [2022-11-16 11:34:07,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:34:07,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:34:07,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:34:07,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:34:07,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:34:07,258 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 224 [2022-11-16 11:34:07,259 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 210 transitions, 502 flow. Second operand has 3 states, 3 states have (on average 192.33333333333334) internal successors, (577), 3 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:07,259 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:34:07,259 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 224 [2022-11-16 11:34:07,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:34:09,469 INFO L130 PetriNetUnfolder]: 1532/11335 cut-off events. [2022-11-16 11:34:09,470 INFO L131 PetriNetUnfolder]: For 389/459 co-relation queries the response was YES. [2022-11-16 11:34:09,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14186 conditions, 11335 events. 1532/11335 cut-off events. For 389/459 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 134619 event pairs, 647 based on Foata normal form. 6/10065 useless extension candidates. Maximal degree in co-relation 14125. Up to 1814 conditions per place. [2022-11-16 11:34:09,557 INFO L137 encePairwiseOnDemand]: 221/224 looper letters, 13 selfloop transitions, 2 changer transitions 0/213 dead transitions. [2022-11-16 11:34:09,557 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 213 transitions, 538 flow [2022-11-16 11:34:09,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:34:09,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:34:09,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 589 transitions. [2022-11-16 11:34:09,561 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8764880952380952 [2022-11-16 11:34:09,561 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 589 transitions. [2022-11-16 11:34:09,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 589 transitions. [2022-11-16 11:34:09,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:34:09,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 589 transitions. [2022-11-16 11:34:09,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 196.33333333333334) internal successors, (589), 3 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:09,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:09,567 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:09,567 INFO L175 Difference]: Start difference. First operand has 208 places, 210 transitions, 502 flow. Second operand 3 states and 589 transitions. [2022-11-16 11:34:09,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 213 transitions, 538 flow [2022-11-16 11:34:09,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 213 transitions, 536 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:34:09,574 INFO L231 Difference]: Finished difference. Result has 210 places, 211 transitions, 512 flow [2022-11-16 11:34:09,574 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=512, PETRI_PLACES=210, PETRI_TRANSITIONS=211} [2022-11-16 11:34:09,577 INFO L288 CegarLoopForPetriNet]: 208 programPoint places, 2 predicate places. [2022-11-16 11:34:09,577 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 211 transitions, 512 flow [2022-11-16 11:34:09,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.33333333333334) internal successors, (577), 3 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:09,579 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:34:09,579 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:34:09,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a763852-36ba-4fe0-ad7c-3a23be9a2ed3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:34:09,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a763852-36ba-4fe0-ad7c-3a23be9a2ed3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:34:09,787 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2022-11-16 11:34:09,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:09,787 INFO L85 PathProgramCache]: Analyzing trace with hash 659984937, now seen corresponding path program 1 times [2022-11-16 11:34:09,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:34:09,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287376371] [2022-11-16 11:34:09,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:09,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:34:09,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:09,986 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:34:09,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:34:09,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287376371] [2022-11-16 11:34:09,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287376371] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:34:09,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660013070] [2022-11-16 11:34:09,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:09,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:34:09,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a763852-36ba-4fe0-ad7c-3a23be9a2ed3/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:34:09,989 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a763852-36ba-4fe0-ad7c-3a23be9a2ed3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:34:10,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a763852-36ba-4fe0-ad7c-3a23be9a2ed3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:34:10,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:10,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:34:10,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:34:10,239 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:34:10,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:34:10,305 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:34:10,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660013070] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:34:10,306 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:34:10,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-16 11:34:10,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216303002] [2022-11-16 11:34:10,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:34:10,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:34:10,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:34:10,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:34:10,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:34:10,310 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 224 [2022-11-16 11:34:10,313 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 211 transitions, 512 flow. Second operand has 10 states, 10 states have (on average 191.3) internal successors, (1913), 10 states have internal predecessors, (1913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:10,313 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:34:10,313 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 224 [2022-11-16 11:34:10,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:34:11,858 INFO L130 PetriNetUnfolder]: 1277/9162 cut-off events. [2022-11-16 11:34:11,858 INFO L131 PetriNetUnfolder]: For 353/407 co-relation queries the response was YES. [2022-11-16 11:34:11,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11462 conditions, 9162 events. 1277/9162 cut-off events. For 353/407 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 103597 event pairs, 583 based on Foata normal form. 8/8147 useless extension candidates. Maximal degree in co-relation 11339. Up to 1507 conditions per place. [2022-11-16 11:34:11,934 INFO L137 encePairwiseOnDemand]: 218/224 looper letters, 16 selfloop transitions, 9 changer transitions 0/221 dead transitions. [2022-11-16 11:34:11,934 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 221 transitions, 584 flow [2022-11-16 11:34:11,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:34:11,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:34:11,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1728 transitions. [2022-11-16 11:34:11,941 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8571428571428571 [2022-11-16 11:34:11,941 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1728 transitions. [2022-11-16 11:34:11,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1728 transitions. [2022-11-16 11:34:11,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:34:11,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1728 transitions. [2022-11-16 11:34:11,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 192.0) internal successors, (1728), 9 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:11,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 224.0) internal successors, (2240), 10 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:11,956 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 224.0) internal successors, (2240), 10 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:11,956 INFO L175 Difference]: Start difference. First operand has 210 places, 211 transitions, 512 flow. Second operand 9 states and 1728 transitions. [2022-11-16 11:34:11,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 221 transitions, 584 flow [2022-11-16 11:34:11,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 221 transitions, 582 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:34:11,966 INFO L231 Difference]: Finished difference. Result has 220 places, 217 transitions, 560 flow [2022-11-16 11:34:11,966 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=510, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=560, PETRI_PLACES=220, PETRI_TRANSITIONS=217} [2022-11-16 11:34:11,969 INFO L288 CegarLoopForPetriNet]: 208 programPoint places, 12 predicate places. [2022-11-16 11:34:11,969 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 217 transitions, 560 flow [2022-11-16 11:34:11,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 191.3) internal successors, (1913), 10 states have internal predecessors, (1913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:11,971 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:34:11,971 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:34:11,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a763852-36ba-4fe0-ad7c-3a23be9a2ed3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:34:12,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a763852-36ba-4fe0-ad7c-3a23be9a2ed3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:34:12,177 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2022-11-16 11:34:12,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:12,177 INFO L85 PathProgramCache]: Analyzing trace with hash -740500266, now seen corresponding path program 1 times [2022-11-16 11:34:12,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:34:12,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50297148] [2022-11-16 11:34:12,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:12,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:34:12,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:34:12,227 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:34:12,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:34:12,279 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:34:12,285 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:34:12,285 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-11-16 11:34:12,286 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (8 of 10 remaining) [2022-11-16 11:34:12,286 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (7 of 10 remaining) [2022-11-16 11:34:12,286 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (6 of 10 remaining) [2022-11-16 11:34:12,287 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (5 of 10 remaining) [2022-11-16 11:34:12,287 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (4 of 10 remaining) [2022-11-16 11:34:12,287 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 10 remaining) [2022-11-16 11:34:12,287 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (2 of 10 remaining) [2022-11-16 11:34:12,288 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (1 of 10 remaining) [2022-11-16 11:34:12,288 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (0 of 10 remaining) [2022-11-16 11:34:12,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:34:12,289 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-16 11:34:12,289 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 11:34:12,290 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-16 11:34:12,336 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-16 11:34:12,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 232 places, 250 transitions, 544 flow [2022-11-16 11:34:12,521 INFO L130 PetriNetUnfolder]: 99/917 cut-off events. [2022-11-16 11:34:12,521 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-11-16 11:34:12,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 972 conditions, 917 events. 99/917 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4470 event pairs, 6 based on Foata normal form. 0/778 useless extension candidates. Maximal degree in co-relation 645. Up to 32 conditions per place. [2022-11-16 11:34:12,533 INFO L82 GeneralOperation]: Start removeDead. Operand has 232 places, 250 transitions, 544 flow [2022-11-16 11:34:12,540 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 232 places, 250 transitions, 544 flow [2022-11-16 11:34:12,541 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:34:12,543 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;@51a3e10d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:34:12,544 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-16 11:34:12,554 INFO L130 PetriNetUnfolder]: 5/88 cut-off events. [2022-11-16 11:34:12,554 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:34:12,555 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:34:12,555 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] [2022-11-16 11:34:12,555 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2022-11-16 11:34:12,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:12,556 INFO L85 PathProgramCache]: Analyzing trace with hash 379041626, now seen corresponding path program 1 times [2022-11-16 11:34:12,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:34:12,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915425856] [2022-11-16 11:34:12,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:12,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:34:12,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:12,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:34:12,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:34:12,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915425856] [2022-11-16 11:34:12,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915425856] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:34:12,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:34:12,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:34:12,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137324404] [2022-11-16 11:34:12,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:34:12,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:34:12,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:34:12,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:34:12,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:34:12,613 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 250 [2022-11-16 11:34:12,615 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 250 transitions, 544 flow. Second operand has 3 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:12,615 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:34:12,615 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 250 [2022-11-16 11:34:12,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:34:21,724 INFO L130 PetriNetUnfolder]: 13713/53845 cut-off events. [2022-11-16 11:34:21,724 INFO L131 PetriNetUnfolder]: For 3966/6259 co-relation queries the response was YES. [2022-11-16 11:34:22,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74889 conditions, 53845 events. 13713/53845 cut-off events. For 3966/6259 co-relation queries the response was YES. Maximal size of possible extension queue 1252. Compared 723997 event pairs, 6303 based on Foata normal form. 18527/64853 useless extension candidates. Maximal degree in co-relation 55964. Up to 15003 conditions per place. [2022-11-16 11:34:22,304 INFO L137 encePairwiseOnDemand]: 211/250 looper letters, 39 selfloop transitions, 12 changer transitions 0/244 dead transitions. [2022-11-16 11:34:22,305 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 244 transitions, 667 flow [2022-11-16 11:34:22,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:34:22,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:34:22,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 678 transitions. [2022-11-16 11:34:22,309 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.904 [2022-11-16 11:34:22,310 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 678 transitions. [2022-11-16 11:34:22,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 678 transitions. [2022-11-16 11:34:22,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:34:22,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 678 transitions. [2022-11-16 11:34:22,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:22,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:22,315 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:22,316 INFO L175 Difference]: Start difference. First operand has 232 places, 250 transitions, 544 flow. Second operand 3 states and 678 transitions. [2022-11-16 11:34:22,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 244 transitions, 667 flow [2022-11-16 11:34:22,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 244 transitions, 667 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:34:22,335 INFO L231 Difference]: Finished difference. Result has 230 places, 233 transitions, 586 flow [2022-11-16 11:34:22,335 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=586, PETRI_PLACES=230, PETRI_TRANSITIONS=233} [2022-11-16 11:34:22,337 INFO L288 CegarLoopForPetriNet]: 232 programPoint places, -2 predicate places. [2022-11-16 11:34:22,337 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 233 transitions, 586 flow [2022-11-16 11:34:22,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:22,338 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:34:22,338 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] [2022-11-16 11:34:22,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:34:22,339 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2022-11-16 11:34:22,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:22,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1722879563, now seen corresponding path program 1 times [2022-11-16 11:34:22,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:34:22,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434393885] [2022-11-16 11:34:22,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:22,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:34:22,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:22,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:34:22,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:34:22,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434393885] [2022-11-16 11:34:22,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434393885] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:34:22,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:34:22,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:34:22,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224478513] [2022-11-16 11:34:22,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:34:22,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:34:22,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:34:22,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:34:22,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:34:22,395 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 250 [2022-11-16 11:34:22,396 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 233 transitions, 586 flow. Second operand has 3 states, 3 states have (on average 211.0) internal successors, (633), 3 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:22,396 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:34:22,396 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 250 [2022-11-16 11:34:22,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:34:28,081 INFO L130 PetriNetUnfolder]: 4977/31740 cut-off events. [2022-11-16 11:34:28,081 INFO L131 PetriNetUnfolder]: For 4218/4708 co-relation queries the response was YES. [2022-11-16 11:34:28,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42411 conditions, 31740 events. 4977/31740 cut-off events. For 4218/4708 co-relation queries the response was YES. Maximal size of possible extension queue 690. Compared 435098 event pairs, 2103 based on Foata normal form. 0/28385 useless extension candidates. Maximal degree in co-relation 30193. Up to 5259 conditions per place. [2022-11-16 11:34:28,506 INFO L137 encePairwiseOnDemand]: 247/250 looper letters, 17 selfloop transitions, 2 changer transitions 0/237 dead transitions. [2022-11-16 11:34:28,507 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 237 transitions, 632 flow [2022-11-16 11:34:28,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:34:28,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:34:28,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 650 transitions. [2022-11-16 11:34:28,510 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8666666666666667 [2022-11-16 11:34:28,511 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 650 transitions. [2022-11-16 11:34:28,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 650 transitions. [2022-11-16 11:34:28,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:34:28,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 650 transitions. [2022-11-16 11:34:28,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 216.66666666666666) internal successors, (650), 3 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:28,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:28,517 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:28,517 INFO L175 Difference]: Start difference. First operand has 230 places, 233 transitions, 586 flow. Second operand 3 states and 650 transitions. [2022-11-16 11:34:28,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 237 transitions, 632 flow [2022-11-16 11:34:28,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 237 transitions, 608 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:34:28,538 INFO L231 Difference]: Finished difference. Result has 231 places, 234 transitions, 574 flow [2022-11-16 11:34:28,539 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=574, PETRI_PLACES=231, PETRI_TRANSITIONS=234} [2022-11-16 11:34:28,539 INFO L288 CegarLoopForPetriNet]: 232 programPoint places, -1 predicate places. [2022-11-16 11:34:28,540 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 234 transitions, 574 flow [2022-11-16 11:34:28,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 211.0) internal successors, (633), 3 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:28,540 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:34:28,541 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:34:28,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 11:34:28,541 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2022-11-16 11:34:28,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:28,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1326375318, now seen corresponding path program 1 times [2022-11-16 11:34:28,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:34:28,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914063496] [2022-11-16 11:34:28,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:28,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:34:28,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:28,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:34:28,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:34:28,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914063496] [2022-11-16 11:34:28,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914063496] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:34:28,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402157737] [2022-11-16 11:34:28,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:28,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:34:28,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a763852-36ba-4fe0-ad7c-3a23be9a2ed3/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:34:28,651 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a763852-36ba-4fe0-ad7c-3a23be9a2ed3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:34:28,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a763852-36ba-4fe0-ad7c-3a23be9a2ed3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:34:28,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:28,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 11:34:28,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:34:28,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:34:28,824 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:34:28,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402157737] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:34:28,825 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:34:28,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-16 11:34:28,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845034851] [2022-11-16 11:34:28,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:34:28,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:34:28,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:34:28,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:34:28,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:34:28,831 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 250 [2022-11-16 11:34:28,832 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 234 transitions, 574 flow. Second operand has 3 states, 3 states have (on average 212.33333333333334) internal successors, (637), 3 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:28,832 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:34:28,833 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 250 [2022-11-16 11:34:28,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:34:36,882 INFO L130 PetriNetUnfolder]: 8509/47460 cut-off events. [2022-11-16 11:34:36,882 INFO L131 PetriNetUnfolder]: For 2181/2559 co-relation queries the response was YES. [2022-11-16 11:34:37,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61406 conditions, 47460 events. 8509/47460 cut-off events. For 2181/2559 co-relation queries the response was YES. Maximal size of possible extension queue 1249. Compared 693573 event pairs, 3850 based on Foata normal form. 36/41599 useless extension candidates. Maximal degree in co-relation 61344. Up to 9345 conditions per place. [2022-11-16 11:34:37,388 INFO L137 encePairwiseOnDemand]: 247/250 looper letters, 15 selfloop transitions, 2 changer transitions 0/237 dead transitions. [2022-11-16 11:34:37,389 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 237 transitions, 614 flow [2022-11-16 11:34:37,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:34:37,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:34:37,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 651 transitions. [2022-11-16 11:34:37,392 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.868 [2022-11-16 11:34:37,392 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 651 transitions. [2022-11-16 11:34:37,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 651 transitions. [2022-11-16 11:34:37,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:34:37,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 651 transitions. [2022-11-16 11:34:37,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:37,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:37,398 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:37,398 INFO L175 Difference]: Start difference. First operand has 231 places, 234 transitions, 574 flow. Second operand 3 states and 651 transitions. [2022-11-16 11:34:37,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 237 transitions, 614 flow [2022-11-16 11:34:37,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 237 transitions, 612 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:34:37,415 INFO L231 Difference]: Finished difference. Result has 233 places, 235 transitions, 584 flow [2022-11-16 11:34:37,416 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=572, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=584, PETRI_PLACES=233, PETRI_TRANSITIONS=235} [2022-11-16 11:34:37,417 INFO L288 CegarLoopForPetriNet]: 232 programPoint places, 1 predicate places. [2022-11-16 11:34:37,418 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 235 transitions, 584 flow [2022-11-16 11:34:37,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 212.33333333333334) internal successors, (637), 3 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:37,418 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:34:37,418 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:34:37,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a763852-36ba-4fe0-ad7c-3a23be9a2ed3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:34:37,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a763852-36ba-4fe0-ad7c-3a23be9a2ed3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-16 11:34:37,625 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2022-11-16 11:34:37,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:37,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1150804347, now seen corresponding path program 1 times [2022-11-16 11:34:37,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:34:37,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740917253] [2022-11-16 11:34:37,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:37,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:34:37,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:37,731 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:34:37,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:34:37,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740917253] [2022-11-16 11:34:37,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740917253] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:34:37,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201034238] [2022-11-16 11:34:37,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:37,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:34:37,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a763852-36ba-4fe0-ad7c-3a23be9a2ed3/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:34:37,736 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a763852-36ba-4fe0-ad7c-3a23be9a2ed3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:34:37,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a763852-36ba-4fe0-ad7c-3a23be9a2ed3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:34:37,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:37,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:34:37,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:34:37,936 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:34:37,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:34:37,993 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:34:37,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201034238] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:34:37,994 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:34:37,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-16 11:34:37,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264332880] [2022-11-16 11:34:37,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:34:37,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:34:37,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:34:37,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:34:37,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:34:37,999 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 250 [2022-11-16 11:34:38,002 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 235 transitions, 584 flow. Second operand has 10 states, 10 states have (on average 211.3) internal successors, (2113), 10 states have internal predecessors, (2113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:38,002 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:34:38,002 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 250 [2022-11-16 11:34:38,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:34:45,810 INFO L130 PetriNetUnfolder]: 8249/45166 cut-off events. [2022-11-16 11:34:45,810 INFO L131 PetriNetUnfolder]: For 2137/2437 co-relation queries the response was YES. [2022-11-16 11:34:46,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58396 conditions, 45166 events. 8249/45166 cut-off events. For 2137/2437 co-relation queries the response was YES. Maximal size of possible extension queue 1228. Compared 656308 event pairs, 3787 based on Foata normal form. 38/39674 useless extension candidates. Maximal degree in co-relation 46641. Up to 9035 conditions per place. [2022-11-16 11:34:46,295 INFO L137 encePairwiseOnDemand]: 244/250 looper letters, 18 selfloop transitions, 9 changer transitions 0/245 dead transitions. [2022-11-16 11:34:46,296 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 245 transitions, 660 flow [2022-11-16 11:34:46,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:34:46,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:34:46,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1910 transitions. [2022-11-16 11:34:46,301 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8488888888888889 [2022-11-16 11:34:46,302 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1910 transitions. [2022-11-16 11:34:46,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1910 transitions. [2022-11-16 11:34:46,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:34:46,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1910 transitions. [2022-11-16 11:34:46,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 212.22222222222223) internal successors, (1910), 9 states have internal predecessors, (1910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:46,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 250.0) internal successors, (2500), 10 states have internal predecessors, (2500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:46,315 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 250.0) internal successors, (2500), 10 states have internal predecessors, (2500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:46,316 INFO L175 Difference]: Start difference. First operand has 233 places, 235 transitions, 584 flow. Second operand 9 states and 1910 transitions. [2022-11-16 11:34:46,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 245 transitions, 660 flow [2022-11-16 11:34:46,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 245 transitions, 658 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:34:46,327 INFO L231 Difference]: Finished difference. Result has 243 places, 241 transitions, 632 flow [2022-11-16 11:34:46,328 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=582, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=632, PETRI_PLACES=243, PETRI_TRANSITIONS=241} [2022-11-16 11:34:46,328 INFO L288 CegarLoopForPetriNet]: 232 programPoint places, 11 predicate places. [2022-11-16 11:34:46,329 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 241 transitions, 632 flow [2022-11-16 11:34:46,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 211.3) internal successors, (2113), 10 states have internal predecessors, (2113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:46,330 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:34:46,330 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:34:46,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a763852-36ba-4fe0-ad7c-3a23be9a2ed3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:34:46,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a763852-36ba-4fe0-ad7c-3a23be9a2ed3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-16 11:34:46,537 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2022-11-16 11:34:46,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:46,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1201199838, now seen corresponding path program 1 times [2022-11-16 11:34:46,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:34:46,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724299354] [2022-11-16 11:34:46,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:46,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:34:46,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:34:46,567 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:34:46,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:34:46,617 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:34:46,624 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:34:46,625 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2022-11-16 11:34:46,625 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (9 of 11 remaining) [2022-11-16 11:34:46,626 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (8 of 11 remaining) [2022-11-16 11:34:46,626 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (7 of 11 remaining) [2022-11-16 11:34:46,626 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (6 of 11 remaining) [2022-11-16 11:34:46,626 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (5 of 11 remaining) [2022-11-16 11:34:46,627 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (4 of 11 remaining) [2022-11-16 11:34:46,627 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 11 remaining) [2022-11-16 11:34:46,627 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (2 of 11 remaining) [2022-11-16 11:34:46,627 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (1 of 11 remaining) [2022-11-16 11:34:46,627 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (0 of 11 remaining) [2022-11-16 11:34:46,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 11:34:46,628 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-16 11:34:46,629 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 11:34:46,629 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-11-16 11:34:46,667 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2022-11-16 11:34:46,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 256 places, 276 transitions, 612 flow [2022-11-16 11:34:46,894 INFO L130 PetriNetUnfolder]: 161/1397 cut-off events. [2022-11-16 11:34:46,894 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2022-11-16 11:34:46,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1508 conditions, 1397 events. 161/1397 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 7593 event pairs, 23 based on Foata normal form. 0/1191 useless extension candidates. Maximal degree in co-relation 962. Up to 80 conditions per place. [2022-11-16 11:34:46,907 INFO L82 GeneralOperation]: Start removeDead. Operand has 256 places, 276 transitions, 612 flow [2022-11-16 11:34:46,917 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 256 places, 276 transitions, 612 flow [2022-11-16 11:34:46,918 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:34:46,919 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;@51a3e10d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:34:46,919 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-11-16 11:34:46,926 INFO L130 PetriNetUnfolder]: 5/87 cut-off events. [2022-11-16 11:34:46,927 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:34:46,927 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:34:46,927 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] [2022-11-16 11:34:46,928 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2022-11-16 11:34:46,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:46,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1161006166, now seen corresponding path program 1 times [2022-11-16 11:34:46,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:34:46,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010346237] [2022-11-16 11:34:46,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:46,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:34:46,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:46,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:34:46,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:34:46,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010346237] [2022-11-16 11:34:46,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010346237] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:34:46,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:34:46,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:34:46,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255710838] [2022-11-16 11:34:46,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:34:46,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:34:46,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:34:46,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:34:46,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:34:46,968 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 276 [2022-11-16 11:34:46,969 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 276 transitions, 612 flow. Second operand has 3 states, 3 states have (on average 211.0) internal successors, (633), 3 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:46,969 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:34:46,970 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 276 [2022-11-16 11:34:46,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand