./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN --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 ac583c9331a2ad916f4c22969f16915d9226d22c75c23a992e6ef02ec672d4b3 --- 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-6b4ec56 [2022-11-20 12:34:55,270 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:34:55,272 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:34:55,318 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:34:55,318 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:34:55,332 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:34:55,333 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:34:55,335 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:34:55,336 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:34:55,337 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:34:55,338 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:34:55,339 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:34:55,340 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:34:55,341 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:34:55,342 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:34:55,343 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:34:55,363 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:34:55,371 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:34:55,372 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:34:55,374 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:34:55,381 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:34:55,384 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:34:55,385 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:34:55,387 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:34:55,391 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:34:55,395 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:34:55,395 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:34:55,396 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:34:55,398 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:34:55,399 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:34:55,400 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:34:55,401 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:34:55,403 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:34:55,404 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:34:55,405 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:34:55,405 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:34:55,406 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:34:55,407 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:34:55,407 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:34:55,408 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:34:55,409 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:34:55,410 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-20 12:34:55,441 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:34:55,441 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:34:55,442 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:34:55,442 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:34:55,443 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:34:55,443 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:34:55,444 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:34:55,444 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:34:55,444 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:34:55,445 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:34:55,446 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:34:55,446 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 12:34:55,446 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:34:55,446 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:34:55,447 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:34:55,447 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:34:55,447 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:34:55,447 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:34:55,447 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-20 12:34:55,448 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:34:55,448 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:34:55,448 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:34:55,448 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:34:55,448 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:34:55,449 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:34:55,449 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:34:55,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:34:55,449 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:34:55,450 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:34:55,450 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:34:55,450 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:34:55,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:34:55,451 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:34:55,451 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:34:55,451 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:34:55,451 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_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac583c9331a2ad916f4c22969f16915d9226d22c75c23a992e6ef02ec672d4b3 [2022-11-20 12:34:55,754 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:34:55,786 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:34:55,788 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:34:55,790 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:34:55,790 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:34:55,791 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i [2022-11-20 12:34:58,817 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:34:59,168 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:34:59,176 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i [2022-11-20 12:34:59,203 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/data/9c17ab434/b30fc9d4dedb4e02a0985a83fa57fbc6/FLAGb71b15e32 [2022-11-20 12:34:59,218 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/data/9c17ab434/b30fc9d4dedb4e02a0985a83fa57fbc6 [2022-11-20 12:34:59,221 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:34:59,222 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:34:59,224 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:34:59,224 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:34:59,228 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:34:59,229 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:34:59" (1/1) ... [2022-11-20 12:34:59,230 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d88822b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:34:59, skipping insertion in model container [2022-11-20 12:34:59,230 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:34:59" (1/1) ... [2022-11-20 12:34:59,238 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:34:59,298 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:34:59,817 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i[47038,47051] [2022-11-20 12:34:59,842 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 12:34:59,843 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 12:34:59,844 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 12:34:59,845 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 12:34:59,875 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:34:59,893 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:34:59,932 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i[47038,47051] [2022-11-20 12:34:59,939 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 12:34:59,941 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 12:34:59,942 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 12:34:59,944 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 12:34:59,962 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:35:00,019 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:35:00,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:35:00 WrapperNode [2022-11-20 12:35:00,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:35:00,021 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:35:00,022 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:35:00,022 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:35:00,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:35:00" (1/1) ... [2022-11-20 12:35:00,056 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:35:00" (1/1) ... [2022-11-20 12:35:00,098 INFO L138 Inliner]: procedures = 277, calls = 45, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 294 [2022-11-20 12:35:00,099 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:35:00,100 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:35:00,100 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:35:00,100 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:35:00,110 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:35:00" (1/1) ... [2022-11-20 12:35:00,111 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:35:00" (1/1) ... [2022-11-20 12:35:00,118 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:35:00" (1/1) ... [2022-11-20 12:35:00,119 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:35:00" (1/1) ... [2022-11-20 12:35:00,141 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:35:00" (1/1) ... [2022-11-20 12:35:00,147 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:35:00" (1/1) ... [2022-11-20 12:35:00,150 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:35:00" (1/1) ... [2022-11-20 12:35:00,152 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:35:00" (1/1) ... [2022-11-20 12:35:00,157 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:35:00,158 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:35:00,158 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:35:00,158 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:35:00,159 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:35:00" (1/1) ... [2022-11-20 12:35:00,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:35:00,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:35:00,192 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:35:00,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:35:00,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:35:00,248 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 12:35:00,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:35:00,249 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:35:00,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:35:00,249 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 12:35:00,249 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 12:35:00,249 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:35:00,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 12:35:00,250 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-20 12:35:00,250 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-20 12:35:00,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:35:00,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:35:00,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:35:00,252 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 12:35:00,493 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:35:00,495 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:35:01,148 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:35:01,159 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:35:01,163 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-11-20 12:35:01,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:35:01 BoogieIcfgContainer [2022-11-20 12:35:01,167 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:35:01,171 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:35:01,172 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:35:01,177 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:35:01,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:34:59" (1/3) ... [2022-11-20 12:35:01,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@517c5695 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:35:01, skipping insertion in model container [2022-11-20 12:35:01,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:35:00" (2/3) ... [2022-11-20 12:35:01,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@517c5695 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:35:01, skipping insertion in model container [2022-11-20 12:35:01,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:35:01" (3/3) ... [2022-11-20 12:35:01,185 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_91-arrayloop2_racefree.i [2022-11-20 12:35:01,194 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 12:35:01,238 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:35:01,240 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-11-20 12:35:01,240 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 12:35:01,398 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-20 12:35:01,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 306 places, 327 transitions, 662 flow [2022-11-20 12:35:01,599 INFO L130 PetriNetUnfolder]: 26/350 cut-off events. [2022-11-20 12:35:01,599 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2022-11-20 12:35:01,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 356 conditions, 350 events. 26/350 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 828 event pairs, 0 based on Foata normal form. 0/302 useless extension candidates. Maximal degree in co-relation 181. Up to 4 conditions per place. [2022-11-20 12:35:01,610 INFO L82 GeneralOperation]: Start removeDead. Operand has 306 places, 327 transitions, 662 flow [2022-11-20 12:35:01,627 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 306 places, 327 transitions, 662 flow [2022-11-20 12:35:01,637 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:35:01,647 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;@56ed7f67, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:35:01,648 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2022-11-20 12:35:01,664 INFO L130 PetriNetUnfolder]: 3/67 cut-off events. [2022-11-20 12:35:01,668 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:35:01,669 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:35:01,670 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] [2022-11-20 12:35:01,670 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2022-11-20 12:35:01,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:01,678 INFO L85 PathProgramCache]: Analyzing trace with hash -54361476, now seen corresponding path program 1 times [2022-11-20 12:35:01,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:35:01,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952848650] [2022-11-20 12:35:01,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:01,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:35:01,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:01,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:35:01,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:35:02,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952848650] [2022-11-20 12:35:02,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952848650] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:35:02,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:35:02,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:35:02,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633340732] [2022-11-20 12:35:02,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:35:02,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 12:35:02,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:35:02,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 12:35:02,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 12:35:02,065 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 327 [2022-11-20 12:35:02,070 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 327 transitions, 662 flow. Second operand has 2 states, 2 states have (on average 307.0) internal successors, (614), 2 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:02,070 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:35:02,070 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 327 [2022-11-20 12:35:02,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:35:02,180 INFO L130 PetriNetUnfolder]: 6/329 cut-off events. [2022-11-20 12:35:02,180 INFO L131 PetriNetUnfolder]: For 6/7 co-relation queries the response was YES. [2022-11-20 12:35:02,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 338 conditions, 329 events. 6/329 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 687 event pairs, 0 based on Foata normal form. 20/319 useless extension candidates. Maximal degree in co-relation 177. Up to 3 conditions per place. [2022-11-20 12:35:02,184 INFO L137 encePairwiseOnDemand]: 309/327 looper letters, 2 selfloop transitions, 0 changer transitions 0/308 dead transitions. [2022-11-20 12:35:02,184 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 308 transitions, 628 flow [2022-11-20 12:35:02,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 12:35:02,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-20 12:35:02,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 632 transitions. [2022-11-20 12:35:02,203 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9663608562691132 [2022-11-20 12:35:02,204 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 632 transitions. [2022-11-20 12:35:02,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 632 transitions. [2022-11-20 12:35:02,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:35:02,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 632 transitions. [2022-11-20 12:35:02,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 316.0) internal successors, (632), 2 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:02,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 327.0) internal successors, (981), 3 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:02,254 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 327.0) internal successors, (981), 3 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:02,256 INFO L175 Difference]: Start difference. First operand has 306 places, 327 transitions, 662 flow. Second operand 2 states and 632 transitions. [2022-11-20 12:35:02,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 308 transitions, 628 flow [2022-11-20 12:35:02,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 308 transitions, 628 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:35:02,271 INFO L231 Difference]: Finished difference. Result has 306 places, 308 transitions, 624 flow [2022-11-20 12:35:02,274 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=624, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=624, PETRI_PLACES=306, PETRI_TRANSITIONS=308} [2022-11-20 12:35:02,284 INFO L288 CegarLoopForPetriNet]: 306 programPoint places, 0 predicate places. [2022-11-20 12:35:02,285 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 308 transitions, 624 flow [2022-11-20 12:35:02,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 307.0) internal successors, (614), 2 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:02,286 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:35:02,286 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] [2022-11-20 12:35:02,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:35:02,287 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2022-11-20 12:35:02,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:02,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1732733220, now seen corresponding path program 1 times [2022-11-20 12:35:02,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:35:02,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404581893] [2022-11-20 12:35:02,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:02,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:35:02,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:02,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:35:02,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:35:02,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404581893] [2022-11-20 12:35:02,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404581893] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:35:02,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:35:02,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:35:02,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394797884] [2022-11-20 12:35:02,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:35:02,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:35:02,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:35:02,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:35:02,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:35:02,484 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 327 [2022-11-20 12:35:02,486 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 308 transitions, 624 flow. Second operand has 3 states, 3 states have (on average 297.0) internal successors, (891), 3 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:02,486 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:35:02,486 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 327 [2022-11-20 12:35:02,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:35:02,615 INFO L130 PetriNetUnfolder]: 7/457 cut-off events. [2022-11-20 12:35:02,615 INFO L131 PetriNetUnfolder]: For 6/7 co-relation queries the response was YES. [2022-11-20 12:35:02,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 484 conditions, 457 events. 7/457 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1220 event pairs, 0 based on Foata normal form. 0/416 useless extension candidates. Maximal degree in co-relation 480. Up to 13 conditions per place. [2022-11-20 12:35:02,617 INFO L137 encePairwiseOnDemand]: 324/327 looper letters, 17 selfloop transitions, 2 changer transitions 0/315 dead transitions. [2022-11-20 12:35:02,618 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 315 transitions, 676 flow [2022-11-20 12:35:02,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:35:02,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:35:02,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 908 transitions. [2022-11-20 12:35:02,625 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9255861365953109 [2022-11-20 12:35:02,625 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 908 transitions. [2022-11-20 12:35:02,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 908 transitions. [2022-11-20 12:35:02,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:35:02,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 908 transitions. [2022-11-20 12:35:02,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 302.6666666666667) internal successors, (908), 3 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:02,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:02,636 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:02,636 INFO L175 Difference]: Start difference. First operand has 306 places, 308 transitions, 624 flow. Second operand 3 states and 908 transitions. [2022-11-20 12:35:02,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 315 transitions, 676 flow [2022-11-20 12:35:02,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 315 transitions, 676 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:35:02,652 INFO L231 Difference]: Finished difference. Result has 309 places, 309 transitions, 636 flow [2022-11-20 12:35:02,653 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=624, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=636, PETRI_PLACES=309, PETRI_TRANSITIONS=309} [2022-11-20 12:35:02,654 INFO L288 CegarLoopForPetriNet]: 306 programPoint places, 3 predicate places. [2022-11-20 12:35:02,655 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 309 transitions, 636 flow [2022-11-20 12:35:02,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 297.0) internal successors, (891), 3 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:02,656 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:35:02,656 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] [2022-11-20 12:35:02,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:35:02,657 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2022-11-20 12:35:02,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:02,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1599697592, now seen corresponding path program 1 times [2022-11-20 12:35:02,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:35:02,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139037347] [2022-11-20 12:35:02,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:02,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:35:02,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:03,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:35:03,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:35:03,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139037347] [2022-11-20 12:35:03,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139037347] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:35:03,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:35:03,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:35:03,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208069927] [2022-11-20 12:35:03,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:35:03,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:35:03,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:35:03,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:35:03,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:35:03,112 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 327 [2022-11-20 12:35:03,114 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 309 transitions, 636 flow. Second operand has 6 states, 6 states have (on average 187.5) internal successors, (1125), 6 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:03,115 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:35:03,115 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 327 [2022-11-20 12:35:03,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:35:03,801 INFO L130 PetriNetUnfolder]: 278/1342 cut-off events. [2022-11-20 12:35:03,801 INFO L131 PetriNetUnfolder]: For 15/28 co-relation queries the response was YES. [2022-11-20 12:35:03,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2065 conditions, 1342 events. 278/1342 cut-off events. For 15/28 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 7726 event pairs, 252 based on Foata normal form. 0/1192 useless extension candidates. Maximal degree in co-relation 2059. Up to 688 conditions per place. [2022-11-20 12:35:03,811 INFO L137 encePairwiseOnDemand]: 315/327 looper letters, 110 selfloop transitions, 10 changer transitions 0/307 dead transitions. [2022-11-20 12:35:03,811 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 307 transitions, 872 flow [2022-11-20 12:35:03,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:35:03,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:35:03,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1238 transitions. [2022-11-20 12:35:03,815 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6309887869520897 [2022-11-20 12:35:03,816 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1238 transitions. [2022-11-20 12:35:03,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1238 transitions. [2022-11-20 12:35:03,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:35:03,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1238 transitions. [2022-11-20 12:35:03,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 206.33333333333334) internal successors, (1238), 6 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:03,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 327.0) internal successors, (2289), 7 states have internal predecessors, (2289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:03,826 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 327.0) internal successors, (2289), 7 states have internal predecessors, (2289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:03,826 INFO L175 Difference]: Start difference. First operand has 309 places, 309 transitions, 636 flow. Second operand 6 states and 1238 transitions. [2022-11-20 12:35:03,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 307 transitions, 872 flow [2022-11-20 12:35:03,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 307 transitions, 870 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:35:03,833 INFO L231 Difference]: Finished difference. Result has 311 places, 307 transitions, 650 flow [2022-11-20 12:35:03,834 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=630, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=650, PETRI_PLACES=311, PETRI_TRANSITIONS=307} [2022-11-20 12:35:03,835 INFO L288 CegarLoopForPetriNet]: 306 programPoint places, 5 predicate places. [2022-11-20 12:35:03,835 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 307 transitions, 650 flow [2022-11-20 12:35:03,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 187.5) internal successors, (1125), 6 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:03,836 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:35:03,837 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] [2022-11-20 12:35:03,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 12:35:03,837 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2022-11-20 12:35:03,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:03,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1667606379, now seen corresponding path program 1 times [2022-11-20 12:35:03,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:35:03,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528822901] [2022-11-20 12:35:03,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:03,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:35:03,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:04,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:35:04,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:35:04,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528822901] [2022-11-20 12:35:04,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528822901] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:35:04,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:35:04,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:35:04,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566448441] [2022-11-20 12:35:04,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:35:04,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:35:04,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:35:04,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:35:04,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:35:04,181 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 327 [2022-11-20 12:35:04,183 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 307 transitions, 650 flow. Second operand has 6 states, 6 states have (on average 188.5) internal successors, (1131), 6 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:04,183 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:35:04,183 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 327 [2022-11-20 12:35:04,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:35:04,653 INFO L130 PetriNetUnfolder]: 278/1338 cut-off events. [2022-11-20 12:35:04,653 INFO L131 PetriNetUnfolder]: For 18/31 co-relation queries the response was YES. [2022-11-20 12:35:04,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2076 conditions, 1338 events. 278/1338 cut-off events. For 18/31 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 7679 event pairs, 252 based on Foata normal form. 0/1192 useless extension candidates. Maximal degree in co-relation 2070. Up to 684 conditions per place. [2022-11-20 12:35:04,660 INFO L137 encePairwiseOnDemand]: 315/327 looper letters, 108 selfloop transitions, 10 changer transitions 0/305 dead transitions. [2022-11-20 12:35:04,661 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 305 transitions, 882 flow [2022-11-20 12:35:04,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:35:04,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:35:04,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1236 transitions. [2022-11-20 12:35:04,665 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6299694189602446 [2022-11-20 12:35:04,665 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1236 transitions. [2022-11-20 12:35:04,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1236 transitions. [2022-11-20 12:35:04,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:35:04,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1236 transitions. [2022-11-20 12:35:04,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 206.0) internal successors, (1236), 6 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:04,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 327.0) internal successors, (2289), 7 states have internal predecessors, (2289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:04,675 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 327.0) internal successors, (2289), 7 states have internal predecessors, (2289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:04,676 INFO L175 Difference]: Start difference. First operand has 311 places, 307 transitions, 650 flow. Second operand 6 states and 1236 transitions. [2022-11-20 12:35:04,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 305 transitions, 882 flow [2022-11-20 12:35:04,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 305 transitions, 862 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 12:35:04,682 INFO L231 Difference]: Finished difference. Result has 309 places, 305 transitions, 646 flow [2022-11-20 12:35:04,683 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=626, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=646, PETRI_PLACES=309, PETRI_TRANSITIONS=305} [2022-11-20 12:35:04,684 INFO L288 CegarLoopForPetriNet]: 306 programPoint places, 3 predicate places. [2022-11-20 12:35:04,684 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 305 transitions, 646 flow [2022-11-20 12:35:04,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 188.5) internal successors, (1131), 6 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:04,685 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:35:04,685 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] [2022-11-20 12:35:04,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 12:35:04,686 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2022-11-20 12:35:04,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:04,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1951830366, now seen corresponding path program 1 times [2022-11-20 12:35:04,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:35:04,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454407422] [2022-11-20 12:35:04,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:04,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:35:04,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:04,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:35:04,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:35:04,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454407422] [2022-11-20 12:35:04,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454407422] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:35:04,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:35:04,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:35:04,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852679206] [2022-11-20 12:35:04,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:35:04,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:35:04,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:35:04,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:35:04,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:35:04,768 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 327 [2022-11-20 12:35:04,770 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 305 transitions, 646 flow. Second operand has 3 states, 3 states have (on average 300.0) internal successors, (900), 3 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:04,770 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:35:04,770 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 327 [2022-11-20 12:35:04,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:35:04,907 INFO L130 PetriNetUnfolder]: 7/641 cut-off events. [2022-11-20 12:35:04,908 INFO L131 PetriNetUnfolder]: For 6/7 co-relation queries the response was YES. [2022-11-20 12:35:04,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 708 conditions, 641 events. 7/641 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1187 event pairs, 0 based on Foata normal form. 0/597 useless extension candidates. Maximal degree in co-relation 702. Up to 16 conditions per place. [2022-11-20 12:35:04,911 INFO L137 encePairwiseOnDemand]: 324/327 looper letters, 11 selfloop transitions, 2 changer transitions 0/309 dead transitions. [2022-11-20 12:35:04,911 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 309 transitions, 680 flow [2022-11-20 12:35:04,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:35:04,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:35:04,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 911 transitions. [2022-11-20 12:35:04,914 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.928644240570846 [2022-11-20 12:35:04,915 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 911 transitions. [2022-11-20 12:35:04,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 911 transitions. [2022-11-20 12:35:04,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:35:04,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 911 transitions. [2022-11-20 12:35:04,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 303.6666666666667) internal successors, (911), 3 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:04,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:04,922 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:04,922 INFO L175 Difference]: Start difference. First operand has 309 places, 305 transitions, 646 flow. Second operand 3 states and 911 transitions. [2022-11-20 12:35:04,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 309 transitions, 680 flow [2022-11-20 12:35:04,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 309 transitions, 660 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 12:35:04,930 INFO L231 Difference]: Finished difference. Result has 307 places, 306 transitions, 638 flow [2022-11-20 12:35:04,931 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=626, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=638, PETRI_PLACES=307, PETRI_TRANSITIONS=306} [2022-11-20 12:35:04,932 INFO L288 CegarLoopForPetriNet]: 306 programPoint places, 1 predicate places. [2022-11-20 12:35:04,932 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 306 transitions, 638 flow [2022-11-20 12:35:04,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 300.0) internal successors, (900), 3 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:04,933 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:35:04,934 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] [2022-11-20 12:35:04,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 12:35:04,934 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2022-11-20 12:35:04,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:04,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1262263335, now seen corresponding path program 1 times [2022-11-20 12:35:04,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:35:04,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626062413] [2022-11-20 12:35:04,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:04,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:35:04,964 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:35:04,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1462781286] [2022-11-20 12:35:04,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:04,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:35:04,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:35:04,968 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:35:04,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:35:05,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:05,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-20 12:35:05,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:35:05,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:35:05,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:05,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 12:35:05,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:05,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:05,290 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:35:05,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-20 12:35:05,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:05,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:05,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:05,338 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:35:05,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-20 12:35:05,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:35:05,376 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:35:05,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:35:05,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626062413] [2022-11-20 12:35:05,376 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:35:05,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462781286] [2022-11-20 12:35:05,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462781286] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:35:05,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:35:05,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:35:05,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409638373] [2022-11-20 12:35:05,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:35:05,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:35:05,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:35:05,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:35:05,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:35:05,381 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 327 [2022-11-20 12:35:05,383 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 306 transitions, 638 flow. Second operand has 8 states, 8 states have (on average 191.625) internal successors, (1533), 8 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:05,383 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:35:05,383 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 327 [2022-11-20 12:35:05,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:35:06,115 INFO L130 PetriNetUnfolder]: 278/1526 cut-off events. [2022-11-20 12:35:06,115 INFO L131 PetriNetUnfolder]: For 16/29 co-relation queries the response was YES. [2022-11-20 12:35:06,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2355 conditions, 1526 events. 278/1526 cut-off events. For 16/29 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 7631 event pairs, 252 based on Foata normal form. 0/1374 useless extension candidates. Maximal degree in co-relation 2348. Up to 761 conditions per place. [2022-11-20 12:35:06,122 INFO L137 encePairwiseOnDemand]: 317/327 looper letters, 116 selfloop transitions, 9 changer transitions 0/316 dead transitions. [2022-11-20 12:35:06,122 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 316 transitions, 908 flow [2022-11-20 12:35:06,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:35:06,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 12:35:06,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1827 transitions. [2022-11-20 12:35:06,127 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6207951070336392 [2022-11-20 12:35:06,128 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1827 transitions. [2022-11-20 12:35:06,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1827 transitions. [2022-11-20 12:35:06,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:35:06,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1827 transitions. [2022-11-20 12:35:06,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 203.0) internal successors, (1827), 9 states have internal predecessors, (1827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:06,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:06,144 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:06,144 INFO L175 Difference]: Start difference. First operand has 307 places, 306 transitions, 638 flow. Second operand 9 states and 1827 transitions. [2022-11-20 12:35:06,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 316 transitions, 908 flow [2022-11-20 12:35:06,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 316 transitions, 906 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:35:06,153 INFO L231 Difference]: Finished difference. Result has 314 places, 306 transitions, 660 flow [2022-11-20 12:35:06,155 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=634, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=660, PETRI_PLACES=314, PETRI_TRANSITIONS=306} [2022-11-20 12:35:06,157 INFO L288 CegarLoopForPetriNet]: 306 programPoint places, 8 predicate places. [2022-11-20 12:35:06,157 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 306 transitions, 660 flow [2022-11-20 12:35:06,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 191.625) internal successors, (1533), 8 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:06,158 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:35:06,158 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:35:06,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:35:06,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:35:06,368 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2022-11-20 12:35:06,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:06,369 INFO L85 PathProgramCache]: Analyzing trace with hash -654186157, now seen corresponding path program 1 times [2022-11-20 12:35:06,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:35:06,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981810012] [2022-11-20 12:35:06,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:06,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:35:06,416 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:35:06,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1497934722] [2022-11-20 12:35:06,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:06,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:35:06,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:35:06,418 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:35:06,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 12:35:06,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:06,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 12:35:06,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:35:06,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:35:06,652 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 12:35:06,677 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:35:06,677 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-20 12:35:06,719 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:35:06,720 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-20 12:35:06,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:35:06,746 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:35:06,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:35:06,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981810012] [2022-11-20 12:35:06,748 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:35:06,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497934722] [2022-11-20 12:35:06,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497934722] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:35:06,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:35:06,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:35:06,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664193723] [2022-11-20 12:35:06,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:35:06,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:35:06,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:35:06,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:35:06,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:35:06,754 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 327 [2022-11-20 12:35:06,756 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 306 transitions, 660 flow. Second operand has 6 states, 6 states have (on average 198.5) internal successors, (1191), 6 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:06,757 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:35:06,757 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 327 [2022-11-20 12:35:06,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:35:07,301 INFO L130 PetriNetUnfolder]: 278/1522 cut-off events. [2022-11-20 12:35:07,302 INFO L131 PetriNetUnfolder]: For 22/35 co-relation queries the response was YES. [2022-11-20 12:35:07,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2373 conditions, 1522 events. 278/1522 cut-off events. For 22/35 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 7624 event pairs, 252 based on Foata normal form. 0/1374 useless extension candidates. Maximal degree in co-relation 2365. Up to 764 conditions per place. [2022-11-20 12:35:07,309 INFO L137 encePairwiseOnDemand]: 321/327 looper letters, 104 selfloop transitions, 5 changer transitions 0/305 dead transitions. [2022-11-20 12:35:07,309 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 305 transitions, 876 flow [2022-11-20 12:35:07,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:35:07,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:35:07,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1268 transitions. [2022-11-20 12:35:07,313 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6462793068297655 [2022-11-20 12:35:07,313 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1268 transitions. [2022-11-20 12:35:07,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1268 transitions. [2022-11-20 12:35:07,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:35:07,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1268 transitions. [2022-11-20 12:35:07,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 211.33333333333334) internal successors, (1268), 6 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:07,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 327.0) internal successors, (2289), 7 states have internal predecessors, (2289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:07,323 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 327.0) internal successors, (2289), 7 states have internal predecessors, (2289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:07,323 INFO L175 Difference]: Start difference. First operand has 314 places, 306 transitions, 660 flow. Second operand 6 states and 1268 transitions. [2022-11-20 12:35:07,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 305 transitions, 876 flow [2022-11-20 12:35:07,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 305 transitions, 862 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-20 12:35:07,330 INFO L231 Difference]: Finished difference. Result has 311 places, 305 transitions, 654 flow [2022-11-20 12:35:07,331 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=644, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=654, PETRI_PLACES=311, PETRI_TRANSITIONS=305} [2022-11-20 12:35:07,331 INFO L288 CegarLoopForPetriNet]: 306 programPoint places, 5 predicate places. [2022-11-20 12:35:07,332 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 305 transitions, 654 flow [2022-11-20 12:35:07,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 198.5) internal successors, (1191), 6 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:07,333 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:35:07,333 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:35:07,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:35:07,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-20 12:35:07,539 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2022-11-20 12:35:07,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:07,540 INFO L85 PathProgramCache]: Analyzing trace with hash 268760632, now seen corresponding path program 1 times [2022-11-20 12:35:07,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:35:07,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330324481] [2022-11-20 12:35:07,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:07,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:35:07,568 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:35:07,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1473120290] [2022-11-20 12:35:07,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:07,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:35:07,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:35:07,570 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:35:07,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 12:35:07,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:07,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 12:35:07,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:35:07,802 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 12:35:07,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 12:35:07,846 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:35:07,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2022-11-20 12:35:07,875 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:35:07,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 46 [2022-11-20 12:35:07,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:35:07,900 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:35:07,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:35:07,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330324481] [2022-11-20 12:35:07,900 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:35:07,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473120290] [2022-11-20 12:35:07,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473120290] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:35:07,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:35:07,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:35:07,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272960749] [2022-11-20 12:35:07,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:35:07,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:35:07,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:35:07,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:35:07,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:35:07,904 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 327 [2022-11-20 12:35:07,905 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 305 transitions, 654 flow. Second operand has 6 states, 6 states have (on average 198.5) internal successors, (1191), 6 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:07,906 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:35:07,906 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 327 [2022-11-20 12:35:07,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:35:08,500 INFO L130 PetriNetUnfolder]: 278/1518 cut-off events. [2022-11-20 12:35:08,500 INFO L131 PetriNetUnfolder]: For 22/35 co-relation queries the response was YES. [2022-11-20 12:35:08,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2362 conditions, 1518 events. 278/1518 cut-off events. For 22/35 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 7598 event pairs, 252 based on Foata normal form. 0/1374 useless extension candidates. Maximal degree in co-relation 2354. Up to 764 conditions per place. [2022-11-20 12:35:08,508 INFO L137 encePairwiseOnDemand]: 321/327 looper letters, 104 selfloop transitions, 5 changer transitions 0/304 dead transitions. [2022-11-20 12:35:08,509 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 304 transitions, 870 flow [2022-11-20 12:35:08,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:35:08,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:35:08,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1262 transitions. [2022-11-20 12:35:08,513 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6432212028542303 [2022-11-20 12:35:08,513 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1262 transitions. [2022-11-20 12:35:08,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1262 transitions. [2022-11-20 12:35:08,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:35:08,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1262 transitions. [2022-11-20 12:35:08,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 210.33333333333334) internal successors, (1262), 6 states have internal predecessors, (1262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:08,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 327.0) internal successors, (2289), 7 states have internal predecessors, (2289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:08,522 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 327.0) internal successors, (2289), 7 states have internal predecessors, (2289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:08,523 INFO L175 Difference]: Start difference. First operand has 311 places, 305 transitions, 654 flow. Second operand 6 states and 1262 transitions. [2022-11-20 12:35:08,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 304 transitions, 870 flow [2022-11-20 12:35:08,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 304 transitions, 860 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 12:35:08,529 INFO L231 Difference]: Finished difference. Result has 310 places, 304 transitions, 652 flow [2022-11-20 12:35:08,530 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=642, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=652, PETRI_PLACES=310, PETRI_TRANSITIONS=304} [2022-11-20 12:35:08,531 INFO L288 CegarLoopForPetriNet]: 306 programPoint places, 4 predicate places. [2022-11-20 12:35:08,531 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 304 transitions, 652 flow [2022-11-20 12:35:08,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 198.5) internal successors, (1191), 6 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:08,532 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:35:08,532 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:35:08,539 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-20 12:35:08,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:35:08,739 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2022-11-20 12:35:08,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:08,739 INFO L85 PathProgramCache]: Analyzing trace with hash -106693846, now seen corresponding path program 1 times [2022-11-20 12:35:08,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:35:08,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001123827] [2022-11-20 12:35:08,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:08,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:35:08,769 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:35:08,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2088122831] [2022-11-20 12:35:08,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:08,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:35:08,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:35:08,771 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:35:08,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 12:35:08,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:08,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-20 12:35:08,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:35:09,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:35:09,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:09,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 12:35:09,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:09,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:09,242 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:35:09,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-20 12:35:09,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:09,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:09,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:09,297 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:35:09,298 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-20 12:35:09,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:35:09,338 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:35:09,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:35:09,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001123827] [2022-11-20 12:35:09,339 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:35:09,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088122831] [2022-11-20 12:35:09,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088122831] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:35:09,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:35:09,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 12:35:09,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276305276] [2022-11-20 12:35:09,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:35:09,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 12:35:09,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:35:09,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 12:35:09,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-11-20 12:35:09,344 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 327 [2022-11-20 12:35:09,347 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 304 transitions, 652 flow. Second operand has 13 states, 13 states have (on average 179.53846153846155) internal successors, (2334), 13 states have internal predecessors, (2334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:09,347 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:35:09,347 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 327 [2022-11-20 12:35:09,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:35:10,407 INFO L130 PetriNetUnfolder]: 278/1514 cut-off events. [2022-11-20 12:35:10,408 INFO L131 PetriNetUnfolder]: For 22/35 co-relation queries the response was YES. [2022-11-20 12:35:10,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2415 conditions, 1514 events. 278/1514 cut-off events. For 22/35 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 7576 event pairs, 252 based on Foata normal form. 0/1374 useless extension candidates. Maximal degree in co-relation 2407. Up to 574 conditions per place. [2022-11-20 12:35:10,414 INFO L137 encePairwiseOnDemand]: 308/327 looper letters, 140 selfloop transitions, 26 changer transitions 0/343 dead transitions. [2022-11-20 12:35:10,414 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 343 transitions, 1068 flow [2022-11-20 12:35:10,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 12:35:10,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-20 12:35:10,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3842 transitions. [2022-11-20 12:35:10,425 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5594874035241008 [2022-11-20 12:35:10,425 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3842 transitions. [2022-11-20 12:35:10,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3842 transitions. [2022-11-20 12:35:10,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:35:10,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3842 transitions. [2022-11-20 12:35:10,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 182.95238095238096) internal successors, (3842), 21 states have internal predecessors, (3842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:10,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 327.0) internal successors, (7194), 22 states have internal predecessors, (7194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:10,468 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 327.0) internal successors, (7194), 22 states have internal predecessors, (7194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:10,468 INFO L175 Difference]: Start difference. First operand has 310 places, 304 transitions, 652 flow. Second operand 21 states and 3842 transitions. [2022-11-20 12:35:10,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 343 transitions, 1068 flow [2022-11-20 12:35:10,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 343 transitions, 1058 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 12:35:10,475 INFO L231 Difference]: Finished difference. Result has 327 places, 315 transitions, 741 flow [2022-11-20 12:35:10,476 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=640, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=741, PETRI_PLACES=327, PETRI_TRANSITIONS=315} [2022-11-20 12:35:10,476 INFO L288 CegarLoopForPetriNet]: 306 programPoint places, 21 predicate places. [2022-11-20 12:35:10,476 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 315 transitions, 741 flow [2022-11-20 12:35:10,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 179.53846153846155) internal successors, (2334), 13 states have internal predecessors, (2334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:10,477 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:35:10,477 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:35:10,492 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-20 12:35:10,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:35:10,685 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2022-11-20 12:35:10,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:10,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1015828590, now seen corresponding path program 1 times [2022-11-20 12:35:10,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:35:10,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369042035] [2022-11-20 12:35:10,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:10,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:35:10,717 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:35:10,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1976961559] [2022-11-20 12:35:10,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:10,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:35:10,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:35:10,719 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:35:10,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 12:35:10,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:10,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 12:35:10,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:35:10,970 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 12:35:10,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 12:35:10,996 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:35:10,996 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2022-11-20 12:35:11,019 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:35:11,019 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 46 [2022-11-20 12:35:11,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:35:11,041 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:35:11,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:35:11,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369042035] [2022-11-20 12:35:11,042 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:35:11,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976961559] [2022-11-20 12:35:11,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1976961559] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:35:11,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:35:11,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:35:11,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158402436] [2022-11-20 12:35:11,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:35:11,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:35:11,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:35:11,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:35:11,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:35:11,046 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 327 [2022-11-20 12:35:11,047 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 315 transitions, 741 flow. Second operand has 6 states, 6 states have (on average 198.5) internal successors, (1191), 6 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:11,047 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:35:11,047 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 327 [2022-11-20 12:35:11,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:35:11,553 INFO L130 PetriNetUnfolder]: 278/1510 cut-off events. [2022-11-20 12:35:11,553 INFO L131 PetriNetUnfolder]: For 37/50 co-relation queries the response was YES. [2022-11-20 12:35:11,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2424 conditions, 1510 events. 278/1510 cut-off events. For 37/50 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 7575 event pairs, 252 based on Foata normal form. 0/1374 useless extension candidates. Maximal degree in co-relation 2413. Up to 764 conditions per place. [2022-11-20 12:35:11,561 INFO L137 encePairwiseOnDemand]: 321/327 looper letters, 105 selfloop transitions, 5 changer transitions 0/314 dead transitions. [2022-11-20 12:35:11,561 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 314 transitions, 959 flow [2022-11-20 12:35:11,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:35:11,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:35:11,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1250 transitions. [2022-11-20 12:35:11,565 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6371049949031601 [2022-11-20 12:35:11,565 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1250 transitions. [2022-11-20 12:35:11,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1250 transitions. [2022-11-20 12:35:11,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:35:11,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1250 transitions. [2022-11-20 12:35:11,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 208.33333333333334) internal successors, (1250), 6 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:11,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 327.0) internal successors, (2289), 7 states have internal predecessors, (2289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:11,574 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 327.0) internal successors, (2289), 7 states have internal predecessors, (2289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:11,574 INFO L175 Difference]: Start difference. First operand has 327 places, 315 transitions, 741 flow. Second operand 6 states and 1250 transitions. [2022-11-20 12:35:11,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 314 transitions, 959 flow [2022-11-20 12:35:11,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 314 transitions, 940 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-20 12:35:11,581 INFO L231 Difference]: Finished difference. Result has 324 places, 314 transitions, 730 flow [2022-11-20 12:35:11,582 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=720, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=730, PETRI_PLACES=324, PETRI_TRANSITIONS=314} [2022-11-20 12:35:11,583 INFO L288 CegarLoopForPetriNet]: 306 programPoint places, 18 predicate places. [2022-11-20 12:35:11,583 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 314 transitions, 730 flow [2022-11-20 12:35:11,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 198.5) internal successors, (1191), 6 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:11,584 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:35:11,584 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:35:11,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 12:35:11,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:35:11,791 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2022-11-20 12:35:11,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:11,792 INFO L85 PathProgramCache]: Analyzing trace with hash -725695168, now seen corresponding path program 1 times [2022-11-20 12:35:11,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:35:11,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101597046] [2022-11-20 12:35:11,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:11,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:35:11,832 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:35:11,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [302417273] [2022-11-20 12:35:11,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:11,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:35:11,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:35:11,834 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:35:11,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 12:35:12,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:12,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 12:35:12,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:35:12,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:35:12,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 12:35:12,140 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:35:12,141 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-20 12:35:12,175 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:35:12,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-20 12:35:12,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:35:12,206 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:35:12,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:35:12,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101597046] [2022-11-20 12:35:12,207 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:35:12,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302417273] [2022-11-20 12:35:12,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302417273] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:35:12,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:35:12,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:35:12,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602676779] [2022-11-20 12:35:12,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:35:12,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:35:12,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:35:12,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:35:12,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:35:12,216 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 327 [2022-11-20 12:35:12,217 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 314 transitions, 730 flow. Second operand has 6 states, 6 states have (on average 200.33333333333334) internal successors, (1202), 6 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:12,217 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:35:12,218 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 327 [2022-11-20 12:35:12,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:35:12,629 INFO L130 PetriNetUnfolder]: 278/1506 cut-off events. [2022-11-20 12:35:12,629 INFO L131 PetriNetUnfolder]: For 37/50 co-relation queries the response was YES. [2022-11-20 12:35:12,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2405 conditions, 1506 events. 278/1506 cut-off events. For 37/50 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 7572 event pairs, 252 based on Foata normal form. 0/1374 useless extension candidates. Maximal degree in co-relation 2393. Up to 756 conditions per place. [2022-11-20 12:35:12,637 INFO L137 encePairwiseOnDemand]: 321/327 looper letters, 103 selfloop transitions, 5 changer transitions 0/313 dead transitions. [2022-11-20 12:35:12,637 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 313 transitions, 944 flow [2022-11-20 12:35:12,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:35:12,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:35:12,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1254 transitions. [2022-11-20 12:35:12,641 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6391437308868502 [2022-11-20 12:35:12,641 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1254 transitions. [2022-11-20 12:35:12,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1254 transitions. [2022-11-20 12:35:12,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:35:12,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1254 transitions. [2022-11-20 12:35:12,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 209.0) internal successors, (1254), 6 states have internal predecessors, (1254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:12,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 327.0) internal successors, (2289), 7 states have internal predecessors, (2289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:12,649 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 327.0) internal successors, (2289), 7 states have internal predecessors, (2289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:12,650 INFO L175 Difference]: Start difference. First operand has 324 places, 314 transitions, 730 flow. Second operand 6 states and 1254 transitions. [2022-11-20 12:35:12,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 313 transitions, 944 flow [2022-11-20 12:35:12,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 313 transitions, 934 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 12:35:12,656 INFO L231 Difference]: Finished difference. Result has 323 places, 313 transitions, 728 flow [2022-11-20 12:35:12,657 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=718, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=728, PETRI_PLACES=323, PETRI_TRANSITIONS=313} [2022-11-20 12:35:12,658 INFO L288 CegarLoopForPetriNet]: 306 programPoint places, 17 predicate places. [2022-11-20 12:35:12,658 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 313 transitions, 728 flow [2022-11-20 12:35:12,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 200.33333333333334) internal successors, (1202), 6 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:12,659 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:35:12,659 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:35:12,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 12:35:12,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:35:12,870 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2022-11-20 12:35:12,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:12,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1612412767, now seen corresponding path program 1 times [2022-11-20 12:35:12,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:35:12,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987332206] [2022-11-20 12:35:12,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:12,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:35:12,913 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:35:12,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1034643661] [2022-11-20 12:35:12,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:12,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:35:12,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:35:12,915 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:35:12,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 12:35:13,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:13,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:35:13,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:35:13,246 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 12:35:13,246 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:35:13,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:35:13,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987332206] [2022-11-20 12:35:13,246 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:35:13,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034643661] [2022-11-20 12:35:13,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034643661] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:35:13,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:35:13,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:35:13,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339549874] [2022-11-20 12:35:13,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:35:13,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:35:13,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:35:13,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:35:13,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:35:13,252 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 327 [2022-11-20 12:35:13,253 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 313 transitions, 728 flow. Second operand has 3 states, 3 states have (on average 300.0) internal successors, (900), 3 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:13,253 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:35:13,253 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 327 [2022-11-20 12:35:13,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:35:13,363 INFO L130 PetriNetUnfolder]: 6/615 cut-off events. [2022-11-20 12:35:13,363 INFO L131 PetriNetUnfolder]: For 16/27 co-relation queries the response was YES. [2022-11-20 12:35:13,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 749 conditions, 615 events. 6/615 cut-off events. For 16/27 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1128 event pairs, 0 based on Foata normal form. 1/599 useless extension candidates. Maximal degree in co-relation 737. Up to 13 conditions per place. [2022-11-20 12:35:13,366 INFO L137 encePairwiseOnDemand]: 324/327 looper letters, 9 selfloop transitions, 2 changer transitions 0/315 dead transitions. [2022-11-20 12:35:13,366 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 315 transitions, 754 flow [2022-11-20 12:35:13,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:35:13,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:35:13,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 909 transitions. [2022-11-20 12:35:13,369 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.926605504587156 [2022-11-20 12:35:13,369 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 909 transitions. [2022-11-20 12:35:13,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 909 transitions. [2022-11-20 12:35:13,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:35:13,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 909 transitions. [2022-11-20 12:35:13,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 303.0) internal successors, (909), 3 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:13,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:13,374 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:13,374 INFO L175 Difference]: Start difference. First operand has 323 places, 313 transitions, 728 flow. Second operand 3 states and 909 transitions. [2022-11-20 12:35:13,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 315 transitions, 754 flow [2022-11-20 12:35:13,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 315 transitions, 744 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 12:35:13,381 INFO L231 Difference]: Finished difference. Result has 321 places, 313 transitions, 726 flow [2022-11-20 12:35:13,381 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=718, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=726, PETRI_PLACES=321, PETRI_TRANSITIONS=313} [2022-11-20 12:35:13,383 INFO L288 CegarLoopForPetriNet]: 306 programPoint places, 15 predicate places. [2022-11-20 12:35:13,384 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 313 transitions, 726 flow [2022-11-20 12:35:13,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 300.0) internal successors, (900), 3 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:13,384 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:35:13,385 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:35:13,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 12:35:13,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:35:13,593 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2022-11-20 12:35:13,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:13,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1596357848, now seen corresponding path program 1 times [2022-11-20 12:35:13,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:35:13,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232077477] [2022-11-20 12:35:13,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:13,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:35:13,631 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:35:13,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [175042639] [2022-11-20 12:35:13,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:13,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:35:13,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:35:13,633 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:35:13,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 12:35:13,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:13,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 592 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:35:13,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:35:14,090 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 12:35:14,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:35:14,269 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 12:35:14,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:35:14,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232077477] [2022-11-20 12:35:14,270 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:35:14,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175042639] [2022-11-20 12:35:14,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175042639] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:35:14,271 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:35:14,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-20 12:35:14,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481397455] [2022-11-20 12:35:14,271 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:35:14,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:35:14,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:35:14,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:35:14,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:35:14,276 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 327 [2022-11-20 12:35:14,278 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 313 transitions, 726 flow. Second operand has 8 states, 8 states have (on average 300.0) internal successors, (2400), 8 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:14,279 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:35:14,279 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 327 [2022-11-20 12:35:14,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:35:14,544 INFO L130 PetriNetUnfolder]: 6/801 cut-off events. [2022-11-20 12:35:14,544 INFO L131 PetriNetUnfolder]: For 20/21 co-relation queries the response was YES. [2022-11-20 12:35:14,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 988 conditions, 801 events. 6/801 cut-off events. For 20/21 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 655 event pairs, 0 based on Foata normal form. 4/789 useless extension candidates. Maximal degree in co-relation 975. Up to 19 conditions per place. [2022-11-20 12:35:14,547 INFO L137 encePairwiseOnDemand]: 321/327 looper letters, 12 selfloop transitions, 9 changer transitions 0/323 dead transitions. [2022-11-20 12:35:14,547 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 323 transitions, 790 flow [2022-11-20 12:35:14,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:35:14,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 12:35:14,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2705 transitions. [2022-11-20 12:35:14,553 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9191301393136255 [2022-11-20 12:35:14,553 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2705 transitions. [2022-11-20 12:35:14,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2705 transitions. [2022-11-20 12:35:14,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:35:14,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2705 transitions. [2022-11-20 12:35:14,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 300.55555555555554) internal successors, (2705), 9 states have internal predecessors, (2705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:14,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:14,566 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:14,566 INFO L175 Difference]: Start difference. First operand has 321 places, 313 transitions, 726 flow. Second operand 9 states and 2705 transitions. [2022-11-20 12:35:14,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 323 transitions, 790 flow [2022-11-20 12:35:14,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 323 transitions, 786 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:35:14,572 INFO L231 Difference]: Finished difference. Result has 330 places, 319 transitions, 772 flow [2022-11-20 12:35:14,573 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=722, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=772, PETRI_PLACES=330, PETRI_TRANSITIONS=319} [2022-11-20 12:35:14,574 INFO L288 CegarLoopForPetriNet]: 306 programPoint places, 24 predicate places. [2022-11-20 12:35:14,574 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 319 transitions, 772 flow [2022-11-20 12:35:14,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 300.0) internal successors, (2400), 8 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:14,575 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:35:14,575 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:35:14,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 12:35:14,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:35:14,782 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2022-11-20 12:35:14,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:14,783 INFO L85 PathProgramCache]: Analyzing trace with hash -2091883192, now seen corresponding path program 2 times [2022-11-20 12:35:14,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:35:14,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756570997] [2022-11-20 12:35:14,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:14,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:35:14,853 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:35:14,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2073833949] [2022-11-20 12:35:14,854 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:35:14,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:35:14,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:35:14,855 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:35:14,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 12:35:15,355 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:35:15,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:35:15,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 1330 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 12:35:15,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:35:15,847 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 1 proven. 276 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 12:35:15,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:35:16,403 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 1 proven. 276 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 12:35:16,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:35:16,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756570997] [2022-11-20 12:35:16,404 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:35:16,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073833949] [2022-11-20 12:35:16,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073833949] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:35:16,404 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:35:16,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-20 12:35:16,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898097114] [2022-11-20 12:35:16,405 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:35:16,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 12:35:16,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:35:16,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 12:35:16,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:35:16,413 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 327 [2022-11-20 12:35:16,418 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 319 transitions, 772 flow. Second operand has 16 states, 16 states have (on average 300.25) internal successors, (4804), 16 states have internal predecessors, (4804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:16,418 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:35:16,419 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 327 [2022-11-20 12:35:16,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:35:17,160 INFO L130 PetriNetUnfolder]: 6/1529 cut-off events. [2022-11-20 12:35:17,160 INFO L131 PetriNetUnfolder]: For 93/94 co-relation queries the response was YES. [2022-11-20 12:35:17,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2004 conditions, 1529 events. 6/1529 cut-off events. For 93/94 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 656 event pairs, 0 based on Foata normal form. 8/1521 useless extension candidates. Maximal degree in co-relation 1989. Up to 43 conditions per place. [2022-11-20 12:35:17,164 INFO L137 encePairwiseOnDemand]: 321/327 looper letters, 20 selfloop transitions, 21 changer transitions 0/343 dead transitions. [2022-11-20 12:35:17,164 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 343 transitions, 962 flow [2022-11-20 12:35:17,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 12:35:17,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-20 12:35:17,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 6303 transitions. [2022-11-20 12:35:17,175 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9178680646570555 [2022-11-20 12:35:17,175 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 6303 transitions. [2022-11-20 12:35:17,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 6303 transitions. [2022-11-20 12:35:17,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:35:17,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 6303 transitions. [2022-11-20 12:35:17,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 300.14285714285717) internal successors, (6303), 21 states have internal predecessors, (6303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:17,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 327.0) internal successors, (7194), 22 states have internal predecessors, (7194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:17,203 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 327.0) internal successors, (7194), 22 states have internal predecessors, (7194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:17,203 INFO L175 Difference]: Start difference. First operand has 330 places, 319 transitions, 772 flow. Second operand 21 states and 6303 transitions. [2022-11-20 12:35:17,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 343 transitions, 962 flow [2022-11-20 12:35:17,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 343 transitions, 948 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-20 12:35:17,210 INFO L231 Difference]: Finished difference. Result has 354 places, 332 transitions, 896 flow [2022-11-20 12:35:17,211 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=766, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=896, PETRI_PLACES=354, PETRI_TRANSITIONS=332} [2022-11-20 12:35:17,211 INFO L288 CegarLoopForPetriNet]: 306 programPoint places, 48 predicate places. [2022-11-20 12:35:17,212 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 332 transitions, 896 flow [2022-11-20 12:35:17,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 300.25) internal successors, (4804), 16 states have internal predecessors, (4804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:17,213 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:35:17,214 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:35:17,227 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-11-20 12:35:17,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:35:17,422 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2022-11-20 12:35:17,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:17,423 INFO L85 PathProgramCache]: Analyzing trace with hash -2005819000, now seen corresponding path program 3 times [2022-11-20 12:35:17,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:35:17,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325383035] [2022-11-20 12:35:17,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:17,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:35:17,565 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:35:17,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1755189829] [2022-11-20 12:35:17,566 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:35:17,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:35:17,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:35:17,568 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:35:17,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 12:35:18,128 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-20 12:35:18,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:35:18,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:35:18,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:35:19,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1924 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1923 trivial. 0 not checked. [2022-11-20 12:35:19,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:35:20,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1924 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1923 trivial. 0 not checked. [2022-11-20 12:35:20,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:35:20,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325383035] [2022-11-20 12:35:20,361 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:35:20,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755189829] [2022-11-20 12:35:20,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755189829] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:35:20,362 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:35:20,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-20 12:35:20,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138941769] [2022-11-20 12:35:20,364 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:35:20,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:35:20,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:35:20,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:35:20,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:35:20,373 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 327 [2022-11-20 12:35:20,375 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 332 transitions, 896 flow. Second operand has 8 states, 8 states have (on average 297.75) internal successors, (2382), 8 states have internal predecessors, (2382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:20,375 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:35:20,375 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 327 [2022-11-20 12:35:20,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:35:21,345 INFO L130 PetriNetUnfolder]: 7/2197 cut-off events. [2022-11-20 12:35:21,345 INFO L131 PetriNetUnfolder]: For 182/183 co-relation queries the response was YES. [2022-11-20 12:35:21,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2942 conditions, 2197 events. 7/2197 cut-off events. For 182/183 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 318 event pairs, 0 based on Foata normal form. 2/2183 useless extension candidates. Maximal degree in co-relation 2922. Up to 64 conditions per place. [2022-11-20 12:35:21,349 INFO L137 encePairwiseOnDemand]: 321/327 looper letters, 22 selfloop transitions, 9 changer transitions 0/347 dead transitions. [2022-11-20 12:35:21,349 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 347 transitions, 997 flow [2022-11-20 12:35:21,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:35:21,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 12:35:21,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2687 transitions. [2022-11-20 12:35:21,354 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9130139313625553 [2022-11-20 12:35:21,354 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2687 transitions. [2022-11-20 12:35:21,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2687 transitions. [2022-11-20 12:35:21,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:35:21,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2687 transitions. [2022-11-20 12:35:21,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 298.55555555555554) internal successors, (2687), 9 states have internal predecessors, (2687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:21,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:21,365 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:21,366 INFO L175 Difference]: Start difference. First operand has 354 places, 332 transitions, 896 flow. Second operand 9 states and 2687 transitions. [2022-11-20 12:35:21,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 347 transitions, 997 flow [2022-11-20 12:35:21,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 347 transitions, 973 flow, removed 6 selfloop flow, removed 6 redundant places. [2022-11-20 12:35:21,375 INFO L231 Difference]: Finished difference. Result has 359 places, 338 transitions, 922 flow [2022-11-20 12:35:21,375 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=872, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=922, PETRI_PLACES=359, PETRI_TRANSITIONS=338} [2022-11-20 12:35:21,376 INFO L288 CegarLoopForPetriNet]: 306 programPoint places, 53 predicate places. [2022-11-20 12:35:21,376 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 338 transitions, 922 flow [2022-11-20 12:35:21,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 297.75) internal successors, (2382), 8 states have internal predecessors, (2382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:21,377 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:35:21,378 INFO L209 CegarLoopForPetriNet]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 12:35:21,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 12:35:21,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-20 12:35:21,584 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2022-11-20 12:35:21,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:21,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1915514840, now seen corresponding path program 4 times [2022-11-20 12:35:21,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:35:21,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975406839] [2022-11-20 12:35:21,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:21,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:35:21,940 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:35:21,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1195113783] [2022-11-20 12:35:21,940 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 12:35:21,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:35:21,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:35:21,942 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:35:21,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 12:35:24,242 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 12:35:24,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:35:24,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 7852 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 12:35:24,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:35:27,520 INFO L134 CoverageAnalysis]: Checked inductivity of 19265 backedges. 0 proven. 13506 refuted. 0 times theorem prover too weak. 5759 trivial. 0 not checked. [2022-11-20 12:35:27,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:35:30,484 INFO L134 CoverageAnalysis]: Checked inductivity of 19265 backedges. 0 proven. 13506 refuted. 0 times theorem prover too weak. 5759 trivial. 0 not checked. [2022-11-20 12:35:30,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:35:30,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975406839] [2022-11-20 12:35:30,485 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:35:30,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195113783] [2022-11-20 12:35:30,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195113783] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:35:30,485 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:35:30,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-20 12:35:30,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072643009] [2022-11-20 12:35:30,487 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:35:30,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 12:35:30,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:35:30,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 12:35:30,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:35:30,495 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 327 [2022-11-20 12:35:30,499 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 338 transitions, 922 flow. Second operand has 16 states, 16 states have (on average 298.375) internal successors, (4774), 16 states have internal predecessors, (4774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:30,500 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:35:30,500 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 327 [2022-11-20 12:35:30,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:35:33,954 INFO L130 PetriNetUnfolder]: 11/4861 cut-off events. [2022-11-20 12:35:33,954 INFO L131 PetriNetUnfolder]: For 502/503 co-relation queries the response was YES. [2022-11-20 12:35:33,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6521 conditions, 4861 events. 11/4861 cut-off events. For 502/503 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 323 event pairs, 0 based on Foata normal form. 4/4849 useless extension candidates. Maximal degree in co-relation 6498. Up to 148 conditions per place. [2022-11-20 12:35:33,966 INFO L137 encePairwiseOnDemand]: 321/327 looper letters, 42 selfloop transitions, 21 changer transitions 0/379 dead transitions. [2022-11-20 12:35:33,966 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 379 transitions, 1217 flow [2022-11-20 12:35:33,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 12:35:33,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-20 12:35:33,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 6261 transitions. [2022-11-20 12:35:33,973 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9117518567059851 [2022-11-20 12:35:33,973 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 6261 transitions. [2022-11-20 12:35:33,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 6261 transitions. [2022-11-20 12:35:33,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:35:33,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 6261 transitions. [2022-11-20 12:35:33,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 298.14285714285717) internal successors, (6261), 21 states have internal predecessors, (6261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:33,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 327.0) internal successors, (7194), 22 states have internal predecessors, (7194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:33,996 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 327.0) internal successors, (7194), 22 states have internal predecessors, (7194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:33,996 INFO L175 Difference]: Start difference. First operand has 359 places, 338 transitions, 922 flow. Second operand 21 states and 6261 transitions. [2022-11-20 12:35:33,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 379 transitions, 1217 flow [2022-11-20 12:35:34,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 379 transitions, 1203 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-20 12:35:34,009 INFO L231 Difference]: Finished difference. Result has 383 places, 351 transitions, 1046 flow [2022-11-20 12:35:34,010 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=916, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1046, PETRI_PLACES=383, PETRI_TRANSITIONS=351} [2022-11-20 12:35:34,010 INFO L288 CegarLoopForPetriNet]: 306 programPoint places, 77 predicate places. [2022-11-20 12:35:34,011 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 351 transitions, 1046 flow [2022-11-20 12:35:34,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 298.375) internal successors, (4774), 16 states have internal predecessors, (4774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:34,012 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:35:34,013 INFO L209 CegarLoopForPetriNet]: trace histogram [49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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] [2022-11-20 12:35:34,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-20 12:35:34,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-20 12:35:34,228 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2022-11-20 12:35:34,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:34,229 INFO L85 PathProgramCache]: Analyzing trace with hash 747025768, now seen corresponding path program 5 times [2022-11-20 12:35:34,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:35:34,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219728314] [2022-11-20 12:35:34,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:34,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:35:34,959 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:35:34,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1497329893] [2022-11-20 12:35:34,960 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 12:35:34,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:35:34,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:35:34,966 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:35:34,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3a0cf1-a0ee-408e-9e63-5494b84ac972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process