./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_23-evilcollapse_rc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_23-evilcollapse_rc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash edbdacd2fc511db63719a3e7d2bd257b6310a833f5bcfcddcb6829e714260082 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 11:49:00,343 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:49:00,345 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:49:00,364 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:49:00,364 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:49:00,365 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:49:00,367 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:49:00,369 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:49:00,370 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:49:00,371 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:49:00,372 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:49:00,374 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:49:00,374 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:49:00,375 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:49:00,376 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:49:00,378 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:49:00,378 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:49:00,380 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:49:00,381 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:49:00,383 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:49:00,385 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:49:00,386 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:49:00,388 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:49:00,389 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:49:00,392 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:49:00,393 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:49:00,393 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:49:00,394 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:49:00,395 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:49:00,396 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:49:00,396 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:49:00,397 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:49:00,398 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:49:00,399 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:49:00,400 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:49:00,400 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:49:00,401 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:49:00,402 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:49:00,402 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:49:00,403 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:49:00,404 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:49:00,405 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-16 11:49:00,430 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:49:00,430 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:49:00,431 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:49:00,431 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:49:00,432 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:49:00,432 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:49:00,433 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:49:00,433 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:49:00,452 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:49:00,453 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:49:00,453 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:49:00,453 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:49:00,453 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:49:00,454 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:49:00,454 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:49:00,454 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:49:00,454 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:49:00,455 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:49:00,455 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-16 11:49:00,455 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:49:00,455 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:49:00,455 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:49:00,456 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:49:00,456 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:49:00,456 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:49:00,457 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:49:00,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:49:00,457 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:49:00,457 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:49:00,458 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:49:00,458 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:49:00,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:49:00,458 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:49:00,459 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:49:00,459 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:49:00,459 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_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> edbdacd2fc511db63719a3e7d2bd257b6310a833f5bcfcddcb6829e714260082 [2022-11-16 11:49:00,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:49:00,769 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:49:00,772 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:49:00,774 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:49:00,774 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:49:00,776 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/goblint-regression/09-regions_23-evilcollapse_rc.i [2022-11-16 11:49:00,848 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/data/4ad1f4375/f2eb50844858444092ab40fbb489c952/FLAG07bc9fdae [2022-11-16 11:49:01,408 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:49:01,409 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/sv-benchmarks/c/goblint-regression/09-regions_23-evilcollapse_rc.i [2022-11-16 11:49:01,424 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/data/4ad1f4375/f2eb50844858444092ab40fbb489c952/FLAG07bc9fdae [2022-11-16 11:49:01,680 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/data/4ad1f4375/f2eb50844858444092ab40fbb489c952 [2022-11-16 11:49:01,683 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:49:01,684 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:49:01,686 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:49:01,686 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:49:01,690 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:49:01,690 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:49:01" (1/1) ... [2022-11-16 11:49:01,692 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30d9e628 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:01, skipping insertion in model container [2022-11-16 11:49:01,692 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:49:01" (1/1) ... [2022-11-16 11:49:01,699 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:49:01,744 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:49:02,314 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 11:49:02,316 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 11:49:02,322 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 11:49:02,325 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 11:49:02,375 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:49:02,401 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:49:02,445 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 11:49:02,446 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 11:49:02,446 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 11:49:02,447 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 11:49:02,459 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:49:02,510 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:49:02,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:02 WrapperNode [2022-11-16 11:49:02,510 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:49:02,512 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:49:02,512 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:49:02,512 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:49:02,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:02" (1/1) ... [2022-11-16 11:49:02,551 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:02" (1/1) ... [2022-11-16 11:49:02,597 INFO L138 Inliner]: procedures = 272, calls = 38, calls flagged for inlining = 10, calls inlined = 11, statements flattened = 268 [2022-11-16 11:49:02,597 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:49:02,598 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:49:02,598 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:49:02,599 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:49:02,608 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:02" (1/1) ... [2022-11-16 11:49:02,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:02" (1/1) ... [2022-11-16 11:49:02,614 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:02" (1/1) ... [2022-11-16 11:49:02,614 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:02" (1/1) ... [2022-11-16 11:49:02,634 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:02" (1/1) ... [2022-11-16 11:49:02,638 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:02" (1/1) ... [2022-11-16 11:49:02,641 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:02" (1/1) ... [2022-11-16 11:49:02,643 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:02" (1/1) ... [2022-11-16 11:49:02,647 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:49:02,648 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:49:02,648 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:49:02,648 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:49:02,649 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:02" (1/1) ... [2022-11-16 11:49:02,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:49:02,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:49:02,690 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:49:02,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:49:02,743 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-11-16 11:49:02,744 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-11-16 11:49:02,744 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:49:02,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 11:49:02,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:49:02,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:49:02,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:49:02,745 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 11:49:02,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 11:49:02,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:49:02,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 11:49:02,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:49:02,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:49:02,747 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:49:02,917 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:49:02,921 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:49:03,719 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:49:03,743 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:49:03,744 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-16 11:49:03,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:49:03 BoogieIcfgContainer [2022-11-16 11:49:03,748 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:49:03,752 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:49:03,752 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:49:03,758 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:49:03,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:49:01" (1/3) ... [2022-11-16 11:49:03,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47991807 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:49:03, skipping insertion in model container [2022-11-16 11:49:03,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:02" (2/3) ... [2022-11-16 11:49:03,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47991807 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:49:03, skipping insertion in model container [2022-11-16 11:49:03,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:49:03" (3/3) ... [2022-11-16 11:49:03,767 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_23-evilcollapse_rc.i [2022-11-16 11:49:03,777 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:49:03,788 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:49:03,789 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-11-16 11:49:03,789 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:49:03,955 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 11:49:03,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 377 places, 386 transitions, 782 flow [2022-11-16 11:49:04,192 INFO L130 PetriNetUnfolder]: 16/384 cut-off events. [2022-11-16 11:49:04,192 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:49:04,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 391 conditions, 384 events. 16/384 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 680 event pairs, 0 based on Foata normal form. 0/346 useless extension candidates. Maximal degree in co-relation 307. Up to 2 conditions per place. [2022-11-16 11:49:04,204 INFO L82 GeneralOperation]: Start removeDead. Operand has 377 places, 386 transitions, 782 flow [2022-11-16 11:49:04,221 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 375 places, 384 transitions, 774 flow [2022-11-16 11:49:04,246 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:49:04,255 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;@d63fd55, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:49:04,255 INFO L358 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2022-11-16 11:49:04,287 INFO L130 PetriNetUnfolder]: 1/40 cut-off events. [2022-11-16 11:49:04,290 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:49:04,291 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:49:04,292 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] [2022-11-16 11:49:04,292 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-16 11:49:04,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:49:04,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1493687603, now seen corresponding path program 1 times [2022-11-16 11:49:04,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:49:04,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664646307] [2022-11-16 11:49:04,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:04,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:49:04,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:05,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:49:05,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:49:05,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664646307] [2022-11-16 11:49:05,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664646307] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:49:05,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:49:05,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:49:05,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508715723] [2022-11-16 11:49:05,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:49:05,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:49:05,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:49:05,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:49:05,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:49:05,245 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 386 [2022-11-16 11:49:05,253 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 384 transitions, 774 flow. Second operand has 6 states, 6 states have (on average 231.5) internal successors, (1389), 6 states have internal predecessors, (1389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:05,253 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:49:05,254 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 386 [2022-11-16 11:49:05,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:49:06,386 INFO L130 PetriNetUnfolder]: 744/2697 cut-off events. [2022-11-16 11:49:06,386 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2022-11-16 11:49:06,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4225 conditions, 2697 events. 744/2697 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 16842 event pairs, 600 based on Foata normal form. 249/2569 useless extension candidates. Maximal degree in co-relation 3898. Up to 1463 conditions per place. [2022-11-16 11:49:06,420 INFO L137 encePairwiseOnDemand]: 364/386 looper letters, 134 selfloop transitions, 10 changer transitions 2/372 dead transitions. [2022-11-16 11:49:06,420 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 372 transitions, 1038 flow [2022-11-16 11:49:06,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:49:06,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 11:49:06,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1536 transitions. [2022-11-16 11:49:06,447 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6632124352331606 [2022-11-16 11:49:06,448 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1536 transitions. [2022-11-16 11:49:06,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1536 transitions. [2022-11-16 11:49:06,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:49:06,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1536 transitions. [2022-11-16 11:49:06,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 256.0) internal successors, (1536), 6 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:06,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:06,484 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:06,486 INFO L175 Difference]: Start difference. First operand has 375 places, 384 transitions, 774 flow. Second operand 6 states and 1536 transitions. [2022-11-16 11:49:06,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 372 transitions, 1038 flow [2022-11-16 11:49:06,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 372 transitions, 1036 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:49:06,502 INFO L231 Difference]: Finished difference. Result has 376 places, 370 transitions, 764 flow [2022-11-16 11:49:06,505 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=764, PETRI_PLACES=376, PETRI_TRANSITIONS=370} [2022-11-16 11:49:06,509 INFO L288 CegarLoopForPetriNet]: 375 programPoint places, 1 predicate places. [2022-11-16 11:49:06,510 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 370 transitions, 764 flow [2022-11-16 11:49:06,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 231.5) internal successors, (1389), 6 states have internal predecessors, (1389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:06,511 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:49:06,512 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:49:06,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:49:06,512 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-16 11:49:06,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:49:06,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1374841415, now seen corresponding path program 1 times [2022-11-16 11:49:06,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:49:06,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412244469] [2022-11-16 11:49:06,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:06,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:49:06,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:06,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:49:06,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:49:06,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412244469] [2022-11-16 11:49:06,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412244469] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:49:06,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:49:06,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:49:06,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287483718] [2022-11-16 11:49:06,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:49:06,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:49:06,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:49:06,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:49:06,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:49:06,962 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 386 [2022-11-16 11:49:06,965 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 370 transitions, 764 flow. Second operand has 6 states, 6 states have (on average 232.5) internal successors, (1395), 6 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:06,965 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:49:06,965 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 386 [2022-11-16 11:49:06,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:49:07,966 INFO L130 PetriNetUnfolder]: 744/2693 cut-off events. [2022-11-16 11:49:07,966 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 11:49:07,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4228 conditions, 2693 events. 744/2693 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 16945 event pairs, 600 based on Foata normal form. 0/2320 useless extension candidates. Maximal degree in co-relation 4032. Up to 1461 conditions per place. [2022-11-16 11:49:07,986 INFO L137 encePairwiseOnDemand]: 374/386 looper letters, 132 selfloop transitions, 10 changer transitions 0/368 dead transitions. [2022-11-16 11:49:07,987 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 368 transitions, 1044 flow [2022-11-16 11:49:07,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:49:07,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 11:49:07,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1524 transitions. [2022-11-16 11:49:07,991 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6580310880829016 [2022-11-16 11:49:07,991 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1524 transitions. [2022-11-16 11:49:07,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1524 transitions. [2022-11-16 11:49:07,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:49:07,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1524 transitions. [2022-11-16 11:49:07,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 254.0) internal successors, (1524), 6 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:08,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:08,003 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:08,003 INFO L175 Difference]: Start difference. First operand has 376 places, 370 transitions, 764 flow. Second operand 6 states and 1524 transitions. [2022-11-16 11:49:08,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 368 transitions, 1044 flow [2022-11-16 11:49:08,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 368 transitions, 1024 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 11:49:08,011 INFO L231 Difference]: Finished difference. Result has 372 places, 368 transitions, 760 flow [2022-11-16 11:49:08,012 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=740, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=760, PETRI_PLACES=372, PETRI_TRANSITIONS=368} [2022-11-16 11:49:08,013 INFO L288 CegarLoopForPetriNet]: 375 programPoint places, -3 predicate places. [2022-11-16 11:49:08,013 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 368 transitions, 760 flow [2022-11-16 11:49:08,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 232.5) internal successors, (1395), 6 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:08,014 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:49:08,014 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] [2022-11-16 11:49:08,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:49:08,015 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-16 11:49:08,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:49:08,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1321628424, now seen corresponding path program 1 times [2022-11-16 11:49:08,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:49:08,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922788772] [2022-11-16 11:49:08,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:08,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:49:08,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:08,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:49:08,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:49:08,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922788772] [2022-11-16 11:49:08,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922788772] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:49:08,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:49:08,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:49:08,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051006596] [2022-11-16 11:49:08,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:49:08,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:49:08,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:49:08,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:49:08,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:49:08,067 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 364 out of 386 [2022-11-16 11:49:08,068 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 368 transitions, 760 flow. Second operand has 3 states, 3 states have (on average 365.0) internal successors, (1095), 3 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:08,069 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:49:08,069 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 364 of 386 [2022-11-16 11:49:08,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:49:08,161 INFO L130 PetriNetUnfolder]: 7/492 cut-off events. [2022-11-16 11:49:08,161 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:49:08,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 538 conditions, 492 events. 7/492 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1074 event pairs, 0 based on Foata normal form. 0/459 useless extension candidates. Maximal degree in co-relation 293. Up to 13 conditions per place. [2022-11-16 11:49:08,164 INFO L137 encePairwiseOnDemand]: 383/386 looper letters, 17 selfloop transitions, 2 changer transitions 0/375 dead transitions. [2022-11-16 11:49:08,165 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 375 transitions, 812 flow [2022-11-16 11:49:08,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:49:08,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:49:08,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1112 transitions. [2022-11-16 11:49:08,168 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9602763385146805 [2022-11-16 11:49:08,168 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1112 transitions. [2022-11-16 11:49:08,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1112 transitions. [2022-11-16 11:49:08,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:49:08,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1112 transitions. [2022-11-16 11:49:08,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 370.6666666666667) internal successors, (1112), 3 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:08,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 386.0) internal successors, (1544), 4 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:08,175 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 386.0) internal successors, (1544), 4 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:08,175 INFO L175 Difference]: Start difference. First operand has 372 places, 368 transitions, 760 flow. Second operand 3 states and 1112 transitions. [2022-11-16 11:49:08,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 375 transitions, 812 flow [2022-11-16 11:49:08,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 375 transitions, 792 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 11:49:08,184 INFO L231 Difference]: Finished difference. Result has 370 places, 369 transitions, 752 flow [2022-11-16 11:49:08,184 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=740, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=752, PETRI_PLACES=370, PETRI_TRANSITIONS=369} [2022-11-16 11:49:08,185 INFO L288 CegarLoopForPetriNet]: 375 programPoint places, -5 predicate places. [2022-11-16 11:49:08,185 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 369 transitions, 752 flow [2022-11-16 11:49:08,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 365.0) internal successors, (1095), 3 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:08,187 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:49:08,187 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:49:08,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:49:08,187 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-16 11:49:08,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:49:08,188 INFO L85 PathProgramCache]: Analyzing trace with hash -2125069049, now seen corresponding path program 1 times [2022-11-16 11:49:08,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:49:08,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60413096] [2022-11-16 11:49:08,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:08,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:49:08,213 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:49:08,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [381121316] [2022-11-16 11:49:08,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:08,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:49:08,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:49:08,220 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:49:08,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:49:08,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:08,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-16 11:49:08,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:49:08,534 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 [2022-11-16 11:49:08,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:49:08,573 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 [2022-11-16 11:49:08,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:49:08,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:49:08,639 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:49:08,639 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 [2022-11-16 11:49:08,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:49:08,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:49:08,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:49:08,705 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:49:08,705 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 [2022-11-16 11:49:08,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:49:08,741 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:49:08,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:49:08,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60413096] [2022-11-16 11:49:08,742 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:49:08,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381121316] [2022-11-16 11:49:08,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381121316] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:49:08,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:49:08,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:49:08,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949703223] [2022-11-16 11:49:08,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:49:08,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:49:08,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:49:08,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:49:08,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:49:08,749 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 386 [2022-11-16 11:49:08,752 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 369 transitions, 752 flow. Second operand has 8 states, 8 states have (on average 235.625) internal successors, (1885), 8 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:08,752 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:49:08,753 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 386 [2022-11-16 11:49:08,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:49:10,760 INFO L130 PetriNetUnfolder]: 1489/5407 cut-off events. [2022-11-16 11:49:10,760 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 11:49:10,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8468 conditions, 5407 events. 1489/5407 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 35552 event pairs, 1200 based on Foata normal form. 0/4667 useless extension candidates. Maximal degree in co-relation 4205. Up to 1504 conditions per place. [2022-11-16 11:49:10,811 INFO L137 encePairwiseOnDemand]: 376/386 looper letters, 214 selfloop transitions, 9 changer transitions 0/453 dead transitions. [2022-11-16 11:49:10,811 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 453 transitions, 1370 flow [2022-11-16 11:49:10,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:49:10,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:49:10,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2321 transitions. [2022-11-16 11:49:10,817 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6681059297639609 [2022-11-16 11:49:10,817 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2321 transitions. [2022-11-16 11:49:10,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2321 transitions. [2022-11-16 11:49:10,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:49:10,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2321 transitions. [2022-11-16 11:49:10,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 257.8888888888889) internal successors, (2321), 9 states have internal predecessors, (2321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:10,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 386.0) internal successors, (3860), 10 states have internal predecessors, (3860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:10,835 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 386.0) internal successors, (3860), 10 states have internal predecessors, (3860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:10,835 INFO L175 Difference]: Start difference. First operand has 370 places, 369 transitions, 752 flow. Second operand 9 states and 2321 transitions. [2022-11-16 11:49:10,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 453 transitions, 1370 flow [2022-11-16 11:49:10,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 453 transitions, 1368 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:49:10,846 INFO L231 Difference]: Finished difference. Result has 377 places, 369 transitions, 774 flow [2022-11-16 11:49:10,847 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=774, PETRI_PLACES=377, PETRI_TRANSITIONS=369} [2022-11-16 11:49:10,848 INFO L288 CegarLoopForPetriNet]: 375 programPoint places, 2 predicate places. [2022-11-16 11:49:10,849 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 369 transitions, 774 flow [2022-11-16 11:49:10,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 235.625) internal successors, (1885), 8 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:10,850 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:49:10,850 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] [2022-11-16 11:49:10,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:49:11,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:49:11,058 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-16 11:49:11,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:49:11,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1402626691, now seen corresponding path program 1 times [2022-11-16 11:49:11,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:49:11,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825942038] [2022-11-16 11:49:11,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:11,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:49:11,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:11,216 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:49:11,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:49:11,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825942038] [2022-11-16 11:49:11,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825942038] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:49:11,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:49:11,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:49:11,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984701166] [2022-11-16 11:49:11,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:49:11,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:49:11,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:49:11,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:49:11,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:49:11,227 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 367 out of 386 [2022-11-16 11:49:11,228 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 369 transitions, 774 flow. Second operand has 3 states, 3 states have (on average 368.0) internal successors, (1104), 3 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:11,229 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:49:11,229 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 367 of 386 [2022-11-16 11:49:11,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:49:11,342 INFO L130 PetriNetUnfolder]: 7/680 cut-off events. [2022-11-16 11:49:11,342 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-16 11:49:11,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 759 conditions, 680 events. 7/680 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1139 event pairs, 0 based on Foata normal form. 0/640 useless extension candidates. Maximal degree in co-relation 357. Up to 16 conditions per place. [2022-11-16 11:49:11,347 INFO L137 encePairwiseOnDemand]: 383/386 looper letters, 11 selfloop transitions, 2 changer transitions 0/373 dead transitions. [2022-11-16 11:49:11,347 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 373 transitions, 808 flow [2022-11-16 11:49:11,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:49:11,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:49:11,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1115 transitions. [2022-11-16 11:49:11,350 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9628670120898101 [2022-11-16 11:49:11,351 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1115 transitions. [2022-11-16 11:49:11,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1115 transitions. [2022-11-16 11:49:11,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:49:11,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1115 transitions. [2022-11-16 11:49:11,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 371.6666666666667) internal successors, (1115), 3 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:11,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 386.0) internal successors, (1544), 4 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:11,357 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 386.0) internal successors, (1544), 4 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:11,358 INFO L175 Difference]: Start difference. First operand has 377 places, 369 transitions, 774 flow. Second operand 3 states and 1115 transitions. [2022-11-16 11:49:11,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 373 transitions, 808 flow [2022-11-16 11:49:11,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 373 transitions, 794 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-16 11:49:11,366 INFO L231 Difference]: Finished difference. Result has 373 places, 370 transitions, 772 flow [2022-11-16 11:49:11,367 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=772, PETRI_PLACES=373, PETRI_TRANSITIONS=370} [2022-11-16 11:49:11,370 INFO L288 CegarLoopForPetriNet]: 375 programPoint places, -2 predicate places. [2022-11-16 11:49:11,371 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 370 transitions, 772 flow [2022-11-16 11:49:11,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 368.0) internal successors, (1104), 3 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:11,372 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:49:11,372 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] [2022-11-16 11:49:11,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:49:11,373 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-16 11:49:11,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:49:11,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1785682785, now seen corresponding path program 1 times [2022-11-16 11:49:11,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:49:11,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005434923] [2022-11-16 11:49:11,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:11,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:49:11,410 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:49:11,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1481608355] [2022-11-16 11:49:11,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:11,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:49:11,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:49:11,413 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:49:11,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:49:11,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:11,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-16 11:49:11,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:49:11,633 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 [2022-11-16 11:49:11,645 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 [2022-11-16 11:49:11,667 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:49:11,668 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 [2022-11-16 11:49:11,711 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:49:11,712 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 [2022-11-16 11:49:11,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:49:11,740 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:49:11,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:49:11,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005434923] [2022-11-16 11:49:11,741 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:49:11,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481608355] [2022-11-16 11:49:11,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481608355] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:49:11,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:49:11,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:49:11,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690005592] [2022-11-16 11:49:11,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:49:11,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:49:11,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:49:11,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:49:11,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:49:11,749 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 386 [2022-11-16 11:49:11,751 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 370 transitions, 772 flow. Second operand has 6 states, 6 states have (on average 242.5) internal successors, (1455), 6 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:11,752 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:49:11,752 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 386 [2022-11-16 11:49:11,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:49:12,874 INFO L130 PetriNetUnfolder]: 745/3001 cut-off events. [2022-11-16 11:49:12,874 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-16 11:49:12,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4707 conditions, 3001 events. 745/3001 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 18217 event pairs, 600 based on Foata normal form. 0/2620 useless extension candidates. Maximal degree in co-relation 4194. Up to 1599 conditions per place. [2022-11-16 11:49:12,900 INFO L137 encePairwiseOnDemand]: 380/386 looper letters, 128 selfloop transitions, 5 changer transitions 0/369 dead transitions. [2022-11-16 11:49:12,900 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 369 transitions, 1036 flow [2022-11-16 11:49:12,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:49:12,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 11:49:12,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1556 transitions. [2022-11-16 11:49:12,906 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6718480138169257 [2022-11-16 11:49:12,906 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1556 transitions. [2022-11-16 11:49:12,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1556 transitions. [2022-11-16 11:49:12,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:49:12,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1556 transitions. [2022-11-16 11:49:12,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 259.3333333333333) internal successors, (1556), 6 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:12,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:12,919 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:12,919 INFO L175 Difference]: Start difference. First operand has 373 places, 370 transitions, 772 flow. Second operand 6 states and 1556 transitions. [2022-11-16 11:49:12,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 369 transitions, 1036 flow [2022-11-16 11:49:12,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 369 transitions, 1034 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:49:12,929 INFO L231 Difference]: Finished difference. Result has 376 places, 369 transitions, 778 flow [2022-11-16 11:49:12,930 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=768, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=778, PETRI_PLACES=376, PETRI_TRANSITIONS=369} [2022-11-16 11:49:12,931 INFO L288 CegarLoopForPetriNet]: 375 programPoint places, 1 predicate places. [2022-11-16 11:49:12,931 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 369 transitions, 778 flow [2022-11-16 11:49:12,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 242.5) internal successors, (1455), 6 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:12,932 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:49:12,933 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] [2022-11-16 11:49:12,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:49:13,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-16 11:49:13,146 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-16 11:49:13,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:49:13,147 INFO L85 PathProgramCache]: Analyzing trace with hash -255996463, now seen corresponding path program 1 times [2022-11-16 11:49:13,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:49:13,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869599632] [2022-11-16 11:49:13,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:13,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:49:13,181 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:49:13,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [30466343] [2022-11-16 11:49:13,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:13,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:49:13,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:49:13,183 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:49:13,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:49:13,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:13,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-16 11:49:13,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:49:13,434 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 [2022-11-16 11:49:13,444 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 [2022-11-16 11:49:13,473 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:49:13,473 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 [2022-11-16 11:49:13,506 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:49:13,507 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 [2022-11-16 11:49:13,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:49:13,533 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:49:13,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:49:13,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869599632] [2022-11-16 11:49:13,534 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:49:13,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30466343] [2022-11-16 11:49:13,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30466343] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:49:13,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:49:13,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:49:13,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138622820] [2022-11-16 11:49:13,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:49:13,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:49:13,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:49:13,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:49:13,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:49:13,538 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 386 [2022-11-16 11:49:13,540 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 369 transitions, 778 flow. Second operand has 6 states, 6 states have (on average 242.5) internal successors, (1455), 6 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:13,540 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:49:13,540 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 386 [2022-11-16 11:49:13,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:49:14,401 INFO L130 PetriNetUnfolder]: 745/2997 cut-off events. [2022-11-16 11:49:14,402 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-16 11:49:14,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4721 conditions, 2997 events. 745/2997 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 18149 event pairs, 600 based on Foata normal form. 0/2620 useless extension candidates. Maximal degree in co-relation 4243. Up to 1599 conditions per place. [2022-11-16 11:49:14,439 INFO L137 encePairwiseOnDemand]: 380/386 looper letters, 128 selfloop transitions, 5 changer transitions 0/368 dead transitions. [2022-11-16 11:49:14,439 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 368 transitions, 1042 flow [2022-11-16 11:49:14,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:49:14,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 11:49:14,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1550 transitions. [2022-11-16 11:49:14,445 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6692573402417962 [2022-11-16 11:49:14,445 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1550 transitions. [2022-11-16 11:49:14,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1550 transitions. [2022-11-16 11:49:14,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:49:14,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1550 transitions. [2022-11-16 11:49:14,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 258.3333333333333) internal successors, (1550), 6 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:14,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:14,457 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:14,457 INFO L175 Difference]: Start difference. First operand has 376 places, 369 transitions, 778 flow. Second operand 6 states and 1550 transitions. [2022-11-16 11:49:14,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 368 transitions, 1042 flow [2022-11-16 11:49:14,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 368 transitions, 1032 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 11:49:14,467 INFO L231 Difference]: Finished difference. Result has 375 places, 368 transitions, 776 flow [2022-11-16 11:49:14,467 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=766, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=776, PETRI_PLACES=375, PETRI_TRANSITIONS=368} [2022-11-16 11:49:14,468 INFO L288 CegarLoopForPetriNet]: 375 programPoint places, 0 predicate places. [2022-11-16 11:49:14,468 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 368 transitions, 776 flow [2022-11-16 11:49:14,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 242.5) internal successors, (1455), 6 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:14,469 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:49:14,470 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] [2022-11-16 11:49:14,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:49:14,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:49:14,676 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-16 11:49:14,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:49:14,677 INFO L85 PathProgramCache]: Analyzing trace with hash 439730996, now seen corresponding path program 1 times [2022-11-16 11:49:14,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:49:14,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676409940] [2022-11-16 11:49:14,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:14,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:49:14,711 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:49:14,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1362975411] [2022-11-16 11:49:14,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:14,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:49:14,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:49:14,713 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:49:14,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:49:14,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:14,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-16 11:49:14,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:49:14,946 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 [2022-11-16 11:49:14,956 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 [2022-11-16 11:49:14,975 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:49:14,976 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 [2022-11-16 11:49:15,002 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:49:15,003 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 [2022-11-16 11:49:15,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:49:15,026 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:49:15,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:49:15,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676409940] [2022-11-16 11:49:15,026 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:49:15,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362975411] [2022-11-16 11:49:15,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362975411] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:49:15,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:49:15,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:49:15,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820552157] [2022-11-16 11:49:15,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:49:15,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:49:15,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:49:15,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:49:15,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:49:15,031 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 386 [2022-11-16 11:49:15,033 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 368 transitions, 776 flow. Second operand has 6 states, 6 states have (on average 241.5) internal successors, (1449), 6 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:15,033 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:49:15,033 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 386 [2022-11-16 11:49:15,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:49:15,909 INFO L130 PetriNetUnfolder]: 745/2993 cut-off events. [2022-11-16 11:49:15,909 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-16 11:49:15,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4721 conditions, 2993 events. 745/2993 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 18142 event pairs, 600 based on Foata normal form. 0/2620 useless extension candidates. Maximal degree in co-relation 4267. Up to 1603 conditions per place. [2022-11-16 11:49:15,927 INFO L137 encePairwiseOnDemand]: 380/386 looper letters, 129 selfloop transitions, 5 changer transitions 0/367 dead transitions. [2022-11-16 11:49:15,928 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 367 transitions, 1042 flow [2022-11-16 11:49:15,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:49:15,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 11:49:15,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1539 transitions. [2022-11-16 11:49:15,934 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6645077720207254 [2022-11-16 11:49:15,934 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1539 transitions. [2022-11-16 11:49:15,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1539 transitions. [2022-11-16 11:49:15,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:49:15,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1539 transitions. [2022-11-16 11:49:15,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 256.5) internal successors, (1539), 6 states have internal predecessors, (1539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:15,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:15,946 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:15,946 INFO L175 Difference]: Start difference. First operand has 375 places, 368 transitions, 776 flow. Second operand 6 states and 1539 transitions. [2022-11-16 11:49:15,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 367 transitions, 1042 flow [2022-11-16 11:49:15,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 367 transitions, 1032 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 11:49:15,954 INFO L231 Difference]: Finished difference. Result has 374 places, 367 transitions, 774 flow [2022-11-16 11:49:15,955 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=764, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=774, PETRI_PLACES=374, PETRI_TRANSITIONS=367} [2022-11-16 11:49:15,955 INFO L288 CegarLoopForPetriNet]: 375 programPoint places, -1 predicate places. [2022-11-16 11:49:15,955 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 367 transitions, 774 flow [2022-11-16 11:49:15,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 241.5) internal successors, (1449), 6 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:15,957 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:49:15,957 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] [2022-11-16 11:49:15,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:49:16,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:49:16,164 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-16 11:49:16,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:49:16,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1029613211, now seen corresponding path program 1 times [2022-11-16 11:49:16,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:49:16,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372897187] [2022-11-16 11:49:16,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:16,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:49:16,199 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:49:16,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [189609407] [2022-11-16 11:49:16,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:16,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:49:16,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:49:16,201 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:49:16,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 11:49:16,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:16,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-16 11:49:16,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:49:16,627 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 [2022-11-16 11:49:16,651 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 23 treesize of output 22 [2022-11-16 11:49:16,686 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:49:16,686 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 32 treesize of output 34 [2022-11-16 11:49:16,731 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:49:16,731 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 41 treesize of output 46 [2022-11-16 11:49:16,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:49:16,770 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:49:16,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:49:16,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372897187] [2022-11-16 11:49:16,771 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:49:16,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189609407] [2022-11-16 11:49:16,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189609407] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:49:16,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:49:16,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 11:49:16,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585811136] [2022-11-16 11:49:16,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:49:16,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 11:49:16,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:49:16,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 11:49:16,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:49:16,777 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 386 [2022-11-16 11:49:16,780 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 367 transitions, 774 flow. Second operand has 13 states, 13 states have (on average 224.0) internal successors, (2912), 13 states have internal predecessors, (2912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:16,781 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:49:16,781 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 386 [2022-11-16 11:49:16,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:49:18,284 INFO L130 PetriNetUnfolder]: 745/2989 cut-off events. [2022-11-16 11:49:18,284 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-16 11:49:18,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4766 conditions, 2989 events. 745/2989 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 18093 event pairs, 600 based on Foata normal form. 0/2620 useless extension candidates. Maximal degree in co-relation 4304. Up to 1409 conditions per place. [2022-11-16 11:49:18,302 INFO L137 encePairwiseOnDemand]: 367/386 looper letters, 163 selfloop transitions, 26 changer transitions 0/406 dead transitions. [2022-11-16 11:49:18,302 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 406 transitions, 1236 flow [2022-11-16 11:49:18,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 11:49:18,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 11:49:18,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4789 transitions. [2022-11-16 11:49:18,315 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5907969405378731 [2022-11-16 11:49:18,315 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4789 transitions. [2022-11-16 11:49:18,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4789 transitions. [2022-11-16 11:49:18,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:49:18,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4789 transitions. [2022-11-16 11:49:18,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 228.04761904761904) internal successors, (4789), 21 states have internal predecessors, (4789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:18,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 386.0) internal successors, (8492), 22 states have internal predecessors, (8492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:18,348 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 386.0) internal successors, (8492), 22 states have internal predecessors, (8492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:18,349 INFO L175 Difference]: Start difference. First operand has 374 places, 367 transitions, 774 flow. Second operand 21 states and 4789 transitions. [2022-11-16 11:49:18,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 406 transitions, 1236 flow [2022-11-16 11:49:18,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 406 transitions, 1226 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 11:49:18,357 INFO L231 Difference]: Finished difference. Result has 391 places, 378 transitions, 863 flow [2022-11-16 11:49:18,358 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=863, PETRI_PLACES=391, PETRI_TRANSITIONS=378} [2022-11-16 11:49:18,359 INFO L288 CegarLoopForPetriNet]: 375 programPoint places, 16 predicate places. [2022-11-16 11:49:18,359 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 378 transitions, 863 flow [2022-11-16 11:49:18,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 224.0) internal successors, (2912), 13 states have internal predecessors, (2912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:18,360 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:49:18,361 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] [2022-11-16 11:49:18,372 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-16 11:49:18,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:49:18,567 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-16 11:49:18,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:49:18,568 INFO L85 PathProgramCache]: Analyzing trace with hash 2141761406, now seen corresponding path program 1 times [2022-11-16 11:49:18,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:49:18,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837816135] [2022-11-16 11:49:18,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:18,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:49:18,609 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:49:18,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [768940539] [2022-11-16 11:49:18,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:18,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:49:18,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:49:18,611 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:49:18,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 11:49:18,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:18,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-16 11:49:18,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:49:18,910 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 [2022-11-16 11:49:18,921 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 [2022-11-16 11:49:18,941 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:49:18,941 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 [2022-11-16 11:49:18,967 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:49:18,968 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 [2022-11-16 11:49:18,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:49:18,993 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:49:18,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:49:18,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837816135] [2022-11-16 11:49:18,993 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:49:18,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768940539] [2022-11-16 11:49:18,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768940539] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:49:18,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:49:18,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:49:18,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090473998] [2022-11-16 11:49:18,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:49:18,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:49:18,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:49:18,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:49:18,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:49:18,998 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 386 [2022-11-16 11:49:19,000 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 378 transitions, 863 flow. Second operand has 6 states, 6 states have (on average 244.33333333333334) internal successors, (1466), 6 states have internal predecessors, (1466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:19,000 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:49:19,001 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 386 [2022-11-16 11:49:19,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:49:19,833 INFO L130 PetriNetUnfolder]: 745/2985 cut-off events. [2022-11-16 11:49:19,833 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-11-16 11:49:19,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4771 conditions, 2985 events. 745/2985 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 18115 event pairs, 600 based on Foata normal form. 0/2620 useless extension candidates. Maximal degree in co-relation 4281. Up to 1591 conditions per place. [2022-11-16 11:49:19,859 INFO L137 encePairwiseOnDemand]: 380/386 looper letters, 127 selfloop transitions, 5 changer transitions 0/377 dead transitions. [2022-11-16 11:49:19,859 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 377 transitions, 1125 flow [2022-11-16 11:49:19,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:49:19,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 11:49:19,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1542 transitions. [2022-11-16 11:49:19,864 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6658031088082902 [2022-11-16 11:49:19,864 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1542 transitions. [2022-11-16 11:49:19,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1542 transitions. [2022-11-16 11:49:19,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:49:19,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1542 transitions. [2022-11-16 11:49:19,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 257.0) internal successors, (1542), 6 states have internal predecessors, (1542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:19,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:19,875 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:19,876 INFO L175 Difference]: Start difference. First operand has 391 places, 378 transitions, 863 flow. Second operand 6 states and 1542 transitions. [2022-11-16 11:49:19,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 377 transitions, 1125 flow [2022-11-16 11:49:19,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 377 transitions, 1106 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-16 11:49:19,885 INFO L231 Difference]: Finished difference. Result has 388 places, 377 transitions, 852 flow [2022-11-16 11:49:19,886 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=852, PETRI_PLACES=388, PETRI_TRANSITIONS=377} [2022-11-16 11:49:19,887 INFO L288 CegarLoopForPetriNet]: 375 programPoint places, 13 predicate places. [2022-11-16 11:49:19,887 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 377 transitions, 852 flow [2022-11-16 11:49:19,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 244.33333333333334) internal successors, (1466), 6 states have internal predecessors, (1466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:19,888 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:49:19,888 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, 1, 1, 1] [2022-11-16 11:49:19,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 11:49:20,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 11:49:20,097 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-16 11:49:20,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:49:20,098 INFO L85 PathProgramCache]: Analyzing trace with hash 839344870, now seen corresponding path program 1 times [2022-11-16 11:49:20,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:49:20,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953966796] [2022-11-16 11:49:20,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:20,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:49:20,163 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:49:20,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1151808252] [2022-11-16 11:49:20,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:20,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:49:20,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:49:20,166 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:49:20,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 11:49:20,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:20,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:49:20,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:49:20,689 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:49:20,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:49:20,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:49:20,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:49:20,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953966796] [2022-11-16 11:49:20,870 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:49:20,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151808252] [2022-11-16 11:49:20,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151808252] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:49:20,871 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:49:20,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-16 11:49:20,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882883804] [2022-11-16 11:49:20,872 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:49:20,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:49:20,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:49:20,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:49:20,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:49:20,878 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 366 out of 386 [2022-11-16 11:49:20,883 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 377 transitions, 852 flow. Second operand has 8 states, 8 states have (on average 367.875) internal successors, (2943), 8 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:20,883 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:49:20,883 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 366 of 386 [2022-11-16 11:49:20,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:49:21,170 INFO L130 PetriNetUnfolder]: 7/846 cut-off events. [2022-11-16 11:49:21,170 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-11-16 11:49:21,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1056 conditions, 846 events. 7/846 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 685 event pairs, 0 based on Foata normal form. 4/832 useless extension candidates. Maximal degree in co-relation 397. Up to 19 conditions per place. [2022-11-16 11:49:21,173 INFO L137 encePairwiseOnDemand]: 380/386 looper letters, 12 selfloop transitions, 9 changer transitions 0/387 dead transitions. [2022-11-16 11:49:21,173 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 387 transitions, 916 flow [2022-11-16 11:49:21,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:49:21,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:49:21,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3317 transitions. [2022-11-16 11:49:21,182 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9548071387449626 [2022-11-16 11:49:21,182 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3317 transitions. [2022-11-16 11:49:21,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3317 transitions. [2022-11-16 11:49:21,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:49:21,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3317 transitions. [2022-11-16 11:49:21,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 368.55555555555554) internal successors, (3317), 9 states have internal predecessors, (3317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:21,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 386.0) internal successors, (3860), 10 states have internal predecessors, (3860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:21,203 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 386.0) internal successors, (3860), 10 states have internal predecessors, (3860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:21,204 INFO L175 Difference]: Start difference. First operand has 388 places, 377 transitions, 852 flow. Second operand 9 states and 3317 transitions. [2022-11-16 11:49:21,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 387 transitions, 916 flow [2022-11-16 11:49:21,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 387 transitions, 906 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 11:49:21,215 INFO L231 Difference]: Finished difference. Result has 394 places, 383 transitions, 892 flow [2022-11-16 11:49:21,216 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=892, PETRI_PLACES=394, PETRI_TRANSITIONS=383} [2022-11-16 11:49:21,216 INFO L288 CegarLoopForPetriNet]: 375 programPoint places, 19 predicate places. [2022-11-16 11:49:21,217 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 383 transitions, 892 flow [2022-11-16 11:49:21,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 367.875) internal successors, (2943), 8 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:21,218 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:49:21,219 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:49:21,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 11:49:21,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-16 11:49:21,427 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-16 11:49:21,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:49:21,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1951053958, now seen corresponding path program 2 times [2022-11-16 11:49:21,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:49:21,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012486295] [2022-11-16 11:49:21,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:21,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:49:21,526 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:49:21,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [269160999] [2022-11-16 11:49:21,527 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:49:21,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:49:21,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:49:21,529 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:49:21,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 11:49:21,883 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:49:21,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:49:21,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-16 11:49:21,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:49:21,921 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 15 treesize of output 11 [2022-11-16 11:49:21,933 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 28 treesize of output 27 [2022-11-16 11:49:21,956 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:49:21,956 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 40 treesize of output 42 [2022-11-16 11:49:21,988 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:49:21,988 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 52 treesize of output 57 [2022-11-16 11:49:22,018 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2022-11-16 11:49:22,018 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:49:22,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:49:22,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012486295] [2022-11-16 11:49:22,019 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:49:22,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269160999] [2022-11-16 11:49:22,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269160999] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:49:22,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:49:22,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:49:22,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053886121] [2022-11-16 11:49:22,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:49:22,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:49:22,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:49:22,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:49:22,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:49:22,024 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 386 [2022-11-16 11:49:22,026 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 383 transitions, 892 flow. Second operand has 6 states, 6 states have (on average 228.83333333333334) internal successors, (1373), 6 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:22,027 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:49:22,027 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 386 [2022-11-16 11:49:22,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:49:23,151 INFO L130 PetriNetUnfolder]: 1039/3441 cut-off events. [2022-11-16 11:49:23,151 INFO L131 PetriNetUnfolder]: For 41/41 co-relation queries the response was YES. [2022-11-16 11:49:23,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5930 conditions, 3441 events. 1039/3441 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 19187 event pairs, 870 based on Foata normal form. 0/3017 useless extension candidates. Maximal degree in co-relation 5214. Up to 2233 conditions per place. [2022-11-16 11:49:23,178 INFO L137 encePairwiseOnDemand]: 374/386 looper letters, 138 selfloop transitions, 10 changer transitions 0/381 dead transitions. [2022-11-16 11:49:23,178 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 381 transitions, 1184 flow [2022-11-16 11:49:23,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:49:23,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 11:49:23,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1456 transitions. [2022-11-16 11:49:23,182 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6286701208981001 [2022-11-16 11:49:23,183 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1456 transitions. [2022-11-16 11:49:23,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1456 transitions. [2022-11-16 11:49:23,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:49:23,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1456 transitions. [2022-11-16 11:49:23,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 242.66666666666666) internal successors, (1456), 6 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:23,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:23,192 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:23,192 INFO L175 Difference]: Start difference. First operand has 394 places, 383 transitions, 892 flow. Second operand 6 states and 1456 transitions. [2022-11-16 11:49:23,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 381 transitions, 1184 flow [2022-11-16 11:49:23,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 381 transitions, 1178 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-11-16 11:49:23,333 INFO L231 Difference]: Finished difference. Result has 396 places, 381 transitions, 902 flow [2022-11-16 11:49:23,334 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=882, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=902, PETRI_PLACES=396, PETRI_TRANSITIONS=381} [2022-11-16 11:49:23,334 INFO L288 CegarLoopForPetriNet]: 375 programPoint places, 21 predicate places. [2022-11-16 11:49:23,334 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 381 transitions, 902 flow [2022-11-16 11:49:23,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 228.83333333333334) internal successors, (1373), 6 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:23,335 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:49:23,336 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:49:23,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 11:49:23,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:49:23,560 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-16 11:49:23,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:49:23,561 INFO L85 PathProgramCache]: Analyzing trace with hash -245474544, now seen corresponding path program 1 times [2022-11-16 11:49:23,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:49:23,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195711724] [2022-11-16 11:49:23,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:23,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:49:23,755 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:49:23,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [526980738] [2022-11-16 11:49:23,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:23,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:49:23,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:49:23,760 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:49:23,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 11:49:24,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:24,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 1421 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 11:49:24,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:49:24,927 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 1 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:49:24,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:49:25,507 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 1 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:49:25,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:49:25,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195711724] [2022-11-16 11:49:25,508 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:49:25,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526980738] [2022-11-16 11:49:25,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526980738] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:49:25,509 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:49:25,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-16 11:49:25,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980189795] [2022-11-16 11:49:25,509 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:49:25,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 11:49:25,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:49:25,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 11:49:25,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:49:25,517 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 366 out of 386 [2022-11-16 11:49:25,523 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 381 transitions, 902 flow. Second operand has 16 states, 16 states have (on average 368.1875) internal successors, (5891), 16 states have internal predecessors, (5891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:25,523 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:49:25,523 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 366 of 386 [2022-11-16 11:49:25,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:49:26,203 INFO L130 PetriNetUnfolder]: 7/1572 cut-off events. [2022-11-16 11:49:26,204 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2022-11-16 11:49:26,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2039 conditions, 1572 events. 7/1572 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 679 event pairs, 0 based on Foata normal form. 8/1564 useless extension candidates. Maximal degree in co-relation 1803. Up to 43 conditions per place. [2022-11-16 11:49:26,208 INFO L137 encePairwiseOnDemand]: 380/386 looper letters, 20 selfloop transitions, 21 changer transitions 0/405 dead transitions. [2022-11-16 11:49:26,209 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 405 transitions, 1084 flow [2022-11-16 11:49:26,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 11:49:26,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 11:49:26,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 7731 transitions. [2022-11-16 11:49:26,222 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9537379718726869 [2022-11-16 11:49:26,222 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 7731 transitions. [2022-11-16 11:49:26,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 7731 transitions. [2022-11-16 11:49:26,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:49:26,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 7731 transitions. [2022-11-16 11:49:26,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 368.14285714285717) internal successors, (7731), 21 states have internal predecessors, (7731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:26,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 386.0) internal successors, (8492), 22 states have internal predecessors, (8492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:26,255 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 386.0) internal successors, (8492), 22 states have internal predecessors, (8492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:26,255 INFO L175 Difference]: Start difference. First operand has 396 places, 381 transitions, 902 flow. Second operand 21 states and 7731 transitions. [2022-11-16 11:49:26,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 405 transitions, 1084 flow [2022-11-16 11:49:26,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 405 transitions, 1064 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 11:49:26,264 INFO L231 Difference]: Finished difference. Result has 416 places, 394 transitions, 1012 flow [2022-11-16 11:49:26,264 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=882, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1012, PETRI_PLACES=416, PETRI_TRANSITIONS=394} [2022-11-16 11:49:26,265 INFO L288 CegarLoopForPetriNet]: 375 programPoint places, 41 predicate places. [2022-11-16 11:49:26,265 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 394 transitions, 1012 flow [2022-11-16 11:49:26,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 368.1875) internal successors, (5891), 16 states have internal predecessors, (5891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:26,267 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:49:26,268 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:49:26,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 11:49:26,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-16 11:49:26,476 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-16 11:49:26,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:49:26,477 INFO L85 PathProgramCache]: Analyzing trace with hash -238698544, now seen corresponding path program 2 times [2022-11-16 11:49:26,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:49:26,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328476057] [2022-11-16 11:49:26,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:26,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:49:26,642 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:49:26,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1601522838] [2022-11-16 11:49:26,643 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:49:26,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:49:26,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:49:26,644 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:49:26,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 11:49:27,262 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:49:27,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:49:27,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-16 11:49:27,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:49:27,312 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 [2022-11-16 11:49:27,328 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 [2022-11-16 11:49:27,346 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:49:27,347 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 [2022-11-16 11:49:27,373 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:49:27,374 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 [2022-11-16 11:49:27,397 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1919 trivial. 0 not checked. [2022-11-16 11:49:27,397 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:49:27,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:49:27,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328476057] [2022-11-16 11:49:27,398 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:49:27,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601522838] [2022-11-16 11:49:27,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601522838] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:49:27,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:49:27,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:49:27,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275416679] [2022-11-16 11:49:27,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:49:27,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:49:27,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:49:27,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:49:27,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:49:27,404 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 386 [2022-11-16 11:49:27,406 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 394 transitions, 1012 flow. Second operand has 6 states, 6 states have (on average 249.5) internal successors, (1497), 6 states have internal predecessors, (1497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:27,406 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:49:27,406 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 386 [2022-11-16 11:49:27,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:49:29,519 INFO L130 PetriNetUnfolder]: 745/3896 cut-off events. [2022-11-16 11:49:29,520 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2022-11-16 11:49:29,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6383 conditions, 3896 events. 745/3896 cut-off events. For 129/129 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 17675 event pairs, 600 based on Foata normal form. 0/3534 useless extension candidates. Maximal degree in co-relation 4999. Up to 1979 conditions per place. [2022-11-16 11:49:29,535 INFO L137 encePairwiseOnDemand]: 380/386 looper letters, 120 selfloop transitions, 5 changer transitions 0/393 dead transitions. [2022-11-16 11:49:29,536 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 393 transitions, 1260 flow [2022-11-16 11:49:29,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:49:29,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 11:49:29,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1554 transitions. [2022-11-16 11:49:29,538 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6709844559585493 [2022-11-16 11:49:29,539 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1554 transitions. [2022-11-16 11:49:29,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1554 transitions. [2022-11-16 11:49:29,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:49:29,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1554 transitions. [2022-11-16 11:49:29,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 259.0) internal successors, (1554), 6 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:29,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:29,546 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:29,546 INFO L175 Difference]: Start difference. First operand has 416 places, 394 transitions, 1012 flow. Second operand 6 states and 1554 transitions. [2022-11-16 11:49:29,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 393 transitions, 1260 flow [2022-11-16 11:49:29,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 393 transitions, 1236 flow, removed 6 selfloop flow, removed 6 redundant places. [2022-11-16 11:49:29,556 INFO L231 Difference]: Finished difference. Result has 414 places, 393 transitions, 996 flow [2022-11-16 11:49:29,557 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=986, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=996, PETRI_PLACES=414, PETRI_TRANSITIONS=393} [2022-11-16 11:49:29,557 INFO L288 CegarLoopForPetriNet]: 375 programPoint places, 39 predicate places. [2022-11-16 11:49:29,557 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 393 transitions, 996 flow [2022-11-16 11:49:29,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 249.5) internal successors, (1497), 6 states have internal predecessors, (1497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:29,558 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:49:29,559 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:49:29,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 11:49:29,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-16 11:49:29,771 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-16 11:49:29,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:49:29,772 INFO L85 PathProgramCache]: Analyzing trace with hash -890013826, now seen corresponding path program 1 times [2022-11-16 11:49:29,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:49:29,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906991759] [2022-11-16 11:49:29,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:29,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:49:29,908 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:49:29,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [168924430] [2022-11-16 11:49:29,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:29,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:49:29,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:49:29,910 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:49:29,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 11:49:30,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:30,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 2934 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 11:49:30,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:49:32,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 1 proven. 1918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:49:32,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:49:33,310 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 1 proven. 1918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:49:33,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:49:33,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906991759] [2022-11-16 11:49:33,311 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:49:33,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168924430] [2022-11-16 11:49:33,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168924430] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:49:33,312 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:49:33,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2022-11-16 11:49:33,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994724406] [2022-11-16 11:49:33,313 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:49:33,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-16 11:49:33,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:49:33,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-16 11:49:33,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2022-11-16 11:49:33,324 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 366 out of 386 [2022-11-16 11:49:33,332 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 393 transitions, 996 flow. Second operand has 32 states, 32 states have (on average 368.34375) internal successors, (11787), 32 states have internal predecessors, (11787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:33,332 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:49:33,333 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 366 of 386 [2022-11-16 11:49:33,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:49:35,461 INFO L130 PetriNetUnfolder]: 7/3027 cut-off events. [2022-11-16 11:49:35,462 INFO L131 PetriNetUnfolder]: For 625/625 co-relation queries the response was YES. [2022-11-16 11:49:35,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4104 conditions, 3027 events. 7/3027 cut-off events. For 625/625 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 676 event pairs, 0 based on Foata normal form. 16/3028 useless extension candidates. Maximal degree in co-relation 3910. Up to 91 conditions per place. [2022-11-16 11:49:35,465 INFO L137 encePairwiseOnDemand]: 380/386 looper letters, 36 selfloop transitions, 45 changer transitions 0/444 dead transitions. [2022-11-16 11:49:35,466 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 444 transitions, 1458 flow [2022-11-16 11:49:35,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-16 11:49:35,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-16 11:49:35,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 16559 transitions. [2022-11-16 11:49:35,482 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9533103051237767 [2022-11-16 11:49:35,482 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 16559 transitions. [2022-11-16 11:49:35,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 16559 transitions. [2022-11-16 11:49:35,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:49:35,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 16559 transitions. [2022-11-16 11:49:35,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 367.97777777777776) internal successors, (16559), 45 states have internal predecessors, (16559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:35,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 386.0) internal successors, (17756), 46 states have internal predecessors, (17756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:35,534 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 386.0) internal successors, (17756), 46 states have internal predecessors, (17756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:35,534 INFO L175 Difference]: Start difference. First operand has 414 places, 393 transitions, 996 flow. Second operand 45 states and 16559 transitions. [2022-11-16 11:49:35,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 444 transitions, 1458 flow [2022-11-16 11:49:35,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 444 transitions, 1448 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 11:49:35,546 INFO L231 Difference]: Finished difference. Result has 462 places, 418 transitions, 1288 flow [2022-11-16 11:49:35,547 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=986, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=1288, PETRI_PLACES=462, PETRI_TRANSITIONS=418} [2022-11-16 11:49:35,548 INFO L288 CegarLoopForPetriNet]: 375 programPoint places, 87 predicate places. [2022-11-16 11:49:35,548 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 418 transitions, 1288 flow [2022-11-16 11:49:35,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 368.34375) internal successors, (11787), 32 states have internal predecessors, (11787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:35,550 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:49:35,550 INFO L209 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:49:35,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-16 11:49:35,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:49:35,762 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-16 11:49:35,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:49:35,763 INFO L85 PathProgramCache]: Analyzing trace with hash -282501634, now seen corresponding path program 2 times [2022-11-16 11:49:35,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:49:35,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378961354] [2022-11-16 11:49:35,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:35,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:49:35,986 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:49:35,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1168090730] [2022-11-16 11:49:35,987 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:49:35,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:49:35,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:49:35,988 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:49:36,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-16 11:49:36,940 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:49:36,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:49:36,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-16 11:49:36,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:49:37,011 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 [2022-11-16 11:49:37,018 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 [2022-11-16 11:49:37,035 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:49:37,036 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 [2022-11-16 11:49:37,065 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:49:37,065 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 [2022-11-16 11:49:37,090 INFO L134 CoverageAnalysis]: Checked inductivity of 9571 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9571 trivial. 0 not checked. [2022-11-16 11:49:37,090 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:49:37,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:49:37,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378961354] [2022-11-16 11:49:37,091 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:49:37,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168090730] [2022-11-16 11:49:37,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168090730] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:49:37,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:49:37,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:49:37,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666808417] [2022-11-16 11:49:37,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:49:37,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:49:37,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:49:37,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:49:37,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:49:37,096 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 386 [2022-11-16 11:49:37,098 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 418 transitions, 1288 flow. Second operand has 6 states, 6 states have (on average 248.5) internal successors, (1491), 6 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:37,098 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:49:37,098 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 386 [2022-11-16 11:49:37,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:49:41,021 INFO L130 PetriNetUnfolder]: 745/5351 cut-off events. [2022-11-16 11:49:41,022 INFO L131 PetriNetUnfolder]: For 575/575 co-relation queries the response was YES. [2022-11-16 11:49:41,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9090 conditions, 5351 events. 745/5351 cut-off events. For 575/575 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 17655 event pairs, 600 based on Foata normal form. 0/4990 useless extension candidates. Maximal degree in co-relation 6333. Up to 2620 conditions per place. [2022-11-16 11:49:41,038 INFO L137 encePairwiseOnDemand]: 380/386 looper letters, 121 selfloop transitions, 5 changer transitions 0/417 dead transitions. [2022-11-16 11:49:41,038 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 417 transitions, 1538 flow [2022-11-16 11:49:41,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:49:41,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 11:49:41,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1543 transitions. [2022-11-16 11:49:41,040 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6662348877374784 [2022-11-16 11:49:41,040 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1543 transitions. [2022-11-16 11:49:41,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1543 transitions. [2022-11-16 11:49:41,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:49:41,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1543 transitions. [2022-11-16 11:49:41,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 257.1666666666667) internal successors, (1543), 6 states have internal predecessors, (1543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:41,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:41,044 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:41,044 INFO L175 Difference]: Start difference. First operand has 462 places, 418 transitions, 1288 flow. Second operand 6 states and 1543 transitions. [2022-11-16 11:49:41,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 417 transitions, 1538 flow [2022-11-16 11:49:41,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 417 transitions, 1482 flow, removed 10 selfloop flow, removed 18 redundant places. [2022-11-16 11:49:41,062 INFO L231 Difference]: Finished difference. Result has 448 places, 417 transitions, 1240 flow [2022-11-16 11:49:41,062 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=1230, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1240, PETRI_PLACES=448, PETRI_TRANSITIONS=417} [2022-11-16 11:49:41,063 INFO L288 CegarLoopForPetriNet]: 375 programPoint places, 73 predicate places. [2022-11-16 11:49:41,063 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 417 transitions, 1240 flow [2022-11-16 11:49:41,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 248.5) internal successors, (1491), 6 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:41,064 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:49:41,064 INFO L209 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:49:41,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-16 11:49:41,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:49:41,273 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-16 11:49:41,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:49:41,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1259387778, now seen corresponding path program 1 times [2022-11-16 11:49:41,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:49:41,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834772249] [2022-11-16 11:49:41,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:41,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:49:41,515 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:49:41,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [95808936] [2022-11-16 11:49:41,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:41,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:49:41,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:49:41,517 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:49:41,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-16 11:49:43,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:43,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 5970 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-16 11:49:43,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:49:46,030 INFO L134 CoverageAnalysis]: Checked inductivity of 9571 backedges. 1 proven. 9570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:49:46,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:49:49,426 INFO L134 CoverageAnalysis]: Checked inductivity of 9571 backedges. 1 proven. 9570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:49:49,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:49:49,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834772249] [2022-11-16 11:49:49,427 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:49:49,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95808936] [2022-11-16 11:49:49,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95808936] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:49:49,427 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:49:49,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 61 [2022-11-16 11:49:49,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943688463] [2022-11-16 11:49:49,428 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:49:49,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-11-16 11:49:49,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:49:49,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-11-16 11:49:49,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=2700, Unknown=0, NotChecked=0, Total=3660 [2022-11-16 11:49:49,450 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 366 out of 386 [2022-11-16 11:49:49,465 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 417 transitions, 1240 flow. Second operand has 61 states, 61 states have (on average 368.4754098360656) internal successors, (22477), 61 states have internal predecessors, (22477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:49,465 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:49:49,465 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 366 of 386 [2022-11-16 11:49:49,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:49:55,775 INFO L130 PetriNetUnfolder]: 7/5756 cut-off events. [2022-11-16 11:49:55,775 INFO L131 PetriNetUnfolder]: For 4427/4427 co-relation queries the response was YES. [2022-11-16 11:49:55,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8132 conditions, 5756 events. 7/5756 cut-off events. For 4427/4427 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 672 event pairs, 0 based on Foata normal form. 30/5772 useless extension candidates. Maximal degree in co-relation 7937. Up to 181 conditions per place. [2022-11-16 11:49:55,785 INFO L137 encePairwiseOnDemand]: 380/386 looper letters, 66 selfloop transitions, 90 changer transitions 0/518 dead transitions. [2022-11-16 11:49:55,786 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 537 places, 518 transitions, 2326 flow [2022-11-16 11:49:55,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-11-16 11:49:55,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2022-11-16 11:49:55,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 33111 transitions. [2022-11-16 11:49:55,814 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9531088082901554 [2022-11-16 11:49:55,814 INFO L72 ComplementDD]: Start complementDD. Operand 90 states and 33111 transitions. [2022-11-16 11:49:55,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 33111 transitions. [2022-11-16 11:49:55,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:49:55,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 90 states and 33111 transitions. [2022-11-16 11:49:55,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 91 states, 90 states have (on average 367.9) internal successors, (33111), 90 states have internal predecessors, (33111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:55,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 91 states, 91 states have (on average 386.0) internal successors, (35126), 91 states have internal predecessors, (35126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:55,905 INFO L81 ComplementDD]: Finished complementDD. Result has 91 states, 91 states have (on average 386.0) internal successors, (35126), 91 states have internal predecessors, (35126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:55,906 INFO L175 Difference]: Start difference. First operand has 448 places, 417 transitions, 1240 flow. Second operand 90 states and 33111 transitions. [2022-11-16 11:49:55,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 537 places, 518 transitions, 2326 flow [2022-11-16 11:49:55,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 532 places, 518 transitions, 2316 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 11:49:55,926 INFO L231 Difference]: Finished difference. Result has 548 places, 463 transitions, 1884 flow [2022-11-16 11:49:55,927 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=1230, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=90, PETRI_FLOW=1884, PETRI_PLACES=548, PETRI_TRANSITIONS=463} [2022-11-16 11:49:55,928 INFO L288 CegarLoopForPetriNet]: 375 programPoint places, 173 predicate places. [2022-11-16 11:49:55,928 INFO L495 AbstractCegarLoop]: Abstraction has has 548 places, 463 transitions, 1884 flow [2022-11-16 11:49:55,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 368.4754098360656) internal successors, (22477), 61 states have internal predecessors, (22477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:55,931 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:49:55,932 INFO L209 CegarLoopForPetriNet]: trace histogram [30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:49:55,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-16 11:49:56,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-16 11:49:56,152 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-16 11:49:56,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:49:56,153 INFO L85 PathProgramCache]: Analyzing trace with hash -522050599, now seen corresponding path program 2 times [2022-11-16 11:49:56,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:49:56,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424381793] [2022-11-16 11:49:56,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:56,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:49:56,595 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:49:56,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1224832199] [2022-11-16 11:49:56,596 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:49:56,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:49:56,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:49:56,597 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:49:56,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-16 11:49:58,557 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:49:58,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:49:58,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-16 11:49:58,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:49:58,662 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 15 treesize of output 11 [2022-11-16 11:49:58,670 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 28 treesize of output 27 [2022-11-16 11:49:58,687 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:49:58,688 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 40 treesize of output 42 [2022-11-16 11:49:58,711 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:49:58,711 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 52 treesize of output 57 [2022-11-16 11:49:58,745 INFO L134 CoverageAnalysis]: Checked inductivity of 39616 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39616 trivial. 0 not checked. [2022-11-16 11:49:58,745 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:49:58,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:49:58,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424381793] [2022-11-16 11:49:58,745 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:49:58,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224832199] [2022-11-16 11:49:58,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224832199] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:49:58,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:49:58,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:49:58,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932206106] [2022-11-16 11:49:58,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:49:58,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:49:58,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:49:58,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:49:58,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:49:58,750 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 386 [2022-11-16 11:49:58,752 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 548 places, 463 transitions, 1884 flow. Second operand has 6 states, 6 states have (on average 232.83333333333334) internal successors, (1397), 6 states have internal predecessors, (1397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:58,752 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:49:58,752 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 386 [2022-11-16 11:49:58,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:50:12,000 INFO L130 PetriNetUnfolder]: 1693/9847 cut-off events. [2022-11-16 11:50:12,000 INFO L131 PetriNetUnfolder]: For 2285/2285 co-relation queries the response was YES. [2022-11-16 11:50:12,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18039 conditions, 9847 events. 1693/9847 cut-off events. For 2285/2285 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 32230 event pairs, 748 based on Foata normal form. 0/9235 useless extension candidates. Maximal degree in co-relation 12609. Up to 4851 conditions per place. [2022-11-16 11:50:12,043 INFO L137 encePairwiseOnDemand]: 374/386 looper letters, 259 selfloop transitions, 23 changer transitions 0/599 dead transitions. [2022-11-16 11:50:12,043 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 553 places, 599 transitions, 2728 flow [2022-11-16 11:50:12,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:50:12,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 11:50:12,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1589 transitions. [2022-11-16 11:50:12,046 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6860967184801382 [2022-11-16 11:50:12,046 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1589 transitions. [2022-11-16 11:50:12,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1589 transitions. [2022-11-16 11:50:12,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:50:12,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1589 transitions. [2022-11-16 11:50:12,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 264.8333333333333) internal successors, (1589), 6 states have internal predecessors, (1589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:50:12,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:50:12,053 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:50:12,053 INFO L175 Difference]: Start difference. First operand has 548 places, 463 transitions, 1884 flow. Second operand 6 states and 1589 transitions. [2022-11-16 11:50:12,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 553 places, 599 transitions, 2728 flow [2022-11-16 11:50:12,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 599 transitions, 2610 flow, removed 17 selfloop flow, removed 42 redundant places. [2022-11-16 11:50:12,090 INFO L231 Difference]: Finished difference. Result has 516 places, 485 transitions, 1924 flow [2022-11-16 11:50:12,091 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=1766, PETRI_DIFFERENCE_MINUEND_PLACES=506, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1924, PETRI_PLACES=516, PETRI_TRANSITIONS=485} [2022-11-16 11:50:12,091 INFO L288 CegarLoopForPetriNet]: 375 programPoint places, 141 predicate places. [2022-11-16 11:50:12,091 INFO L495 AbstractCegarLoop]: Abstraction has has 516 places, 485 transitions, 1924 flow [2022-11-16 11:50:12,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 232.83333333333334) internal successors, (1397), 6 states have internal predecessors, (1397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:50:12,092 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:50:12,093 INFO L209 CegarLoopForPetriNet]: trace histogram [30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:50:12,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-16 11:50:12,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-16 11:50:12,303 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-16 11:50:12,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:12,304 INFO L85 PathProgramCache]: Analyzing trace with hash 134098110, now seen corresponding path program 1 times [2022-11-16 11:50:12,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:50:12,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088253845] [2022-11-16 11:50:12,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:12,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:50:12,807 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:50:12,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1638802599] [2022-11-16 11:50:12,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:12,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:50:12,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:50:12,814 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:50:12,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-16 11:50:16,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:16,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 11533 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:50:16,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:50:21,592 INFO L134 CoverageAnalysis]: Checked inductivity of 39616 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 39615 trivial. 0 not checked. [2022-11-16 11:50:21,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:50:27,716 INFO L134 CoverageAnalysis]: Checked inductivity of 39616 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 39615 trivial. 0 not checked. [2022-11-16 11:50:27,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:50:27,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088253845] [2022-11-16 11:50:27,716 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:50:27,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638802599] [2022-11-16 11:50:27,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638802599] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:50:27,717 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:50:27,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-16 11:50:27,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213023638] [2022-11-16 11:50:27,719 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:50:27,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:50:27,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:50:27,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:50:27,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:50:27,727 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 363 out of 386 [2022-11-16 11:50:27,730 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 516 places, 485 transitions, 1924 flow. Second operand has 8 states, 8 states have (on average 365.875) internal successors, (2927), 8 states have internal predecessors, (2927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:50:27,731 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:50:27,731 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 363 of 386 [2022-11-16 11:50:27,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:50:40,034 INFO L130 PetriNetUnfolder]: 76/9081 cut-off events. [2022-11-16 11:50:40,035 INFO L131 PetriNetUnfolder]: For 3477/3480 co-relation queries the response was YES. [2022-11-16 11:50:40,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12806 conditions, 9081 events. 76/9081 cut-off events. For 3477/3480 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3624 event pairs, 8 based on Foata normal form. 2/9007 useless extension candidates. Maximal degree in co-relation 12242. Up to 271 conditions per place. [2022-11-16 11:50:40,060 INFO L137 encePairwiseOnDemand]: 380/386 looper letters, 22 selfloop transitions, 9 changer transitions 0/500 dead transitions. [2022-11-16 11:50:40,060 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 524 places, 500 transitions, 2025 flow [2022-11-16 11:50:40,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:50:40,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:50:40,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3299 transitions. [2022-11-16 11:50:40,064 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9496257915947035 [2022-11-16 11:50:40,064 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3299 transitions. [2022-11-16 11:50:40,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3299 transitions. [2022-11-16 11:50:40,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:50:40,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3299 transitions. [2022-11-16 11:50:40,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 366.55555555555554) internal successors, (3299), 9 states have internal predecessors, (3299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:50:40,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 386.0) internal successors, (3860), 10 states have internal predecessors, (3860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:50:40,076 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 386.0) internal successors, (3860), 10 states have internal predecessors, (3860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:50:40,076 INFO L175 Difference]: Start difference. First operand has 516 places, 485 transitions, 1924 flow. Second operand 9 states and 3299 transitions. [2022-11-16 11:50:40,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 524 places, 500 transitions, 2025 flow [2022-11-16 11:50:40,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 524 places, 500 transitions, 2025 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:50:40,118 INFO L231 Difference]: Finished difference. Result has 527 places, 491 transitions, 1974 flow [2022-11-16 11:50:40,119 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=1924, PETRI_DIFFERENCE_MINUEND_PLACES=516, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1974, PETRI_PLACES=527, PETRI_TRANSITIONS=491} [2022-11-16 11:50:40,120 INFO L288 CegarLoopForPetriNet]: 375 programPoint places, 152 predicate places. [2022-11-16 11:50:40,120 INFO L495 AbstractCegarLoop]: Abstraction has has 527 places, 491 transitions, 1974 flow [2022-11-16 11:50:40,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 365.875) internal successors, (2927), 8 states have internal predecessors, (2927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:50:40,121 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:50:40,123 INFO L209 CegarLoopForPetriNet]: trace histogram [90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:50:40,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-16 11:50:40,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:50:40,339 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-16 11:50:40,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:40,340 INFO L85 PathProgramCache]: Analyzing trace with hash 732448584, now seen corresponding path program 2 times [2022-11-16 11:50:40,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:50:40,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31980928] [2022-11-16 11:50:40,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:40,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:50:41,693 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:50:41,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [64528021] [2022-11-16 11:50:41,694 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:50:41,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:50:41,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:50:41,696 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:50:41,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06359030-e01e-40a3-9de4-757c64c80648/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-16 11:50:46,390 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:50:46,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:50:46,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-16 11:50:46,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:50:46,728 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 15 treesize of output 11 [2022-11-16 11:50:46,736 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 28 treesize of output 27 [2022-11-16 11:50:46,761 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:50:46,761 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 40 treesize of output 42 [2022-11-16 11:50:46,786 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:50:46,786 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 52 treesize of output 57 [2022-11-16 11:50:46,835 INFO L134 CoverageAnalysis]: Checked inductivity of 364812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364812 trivial. 0 not checked. [2022-11-16 11:50:46,835 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:50:46,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:50:46,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31980928] [2022-11-16 11:50:46,836 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:50:46,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64528021] [2022-11-16 11:50:46,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64528021] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:50:46,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:50:46,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:50:46,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296210653] [2022-11-16 11:50:46,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:50:46,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:50:46,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:50:46,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:50:46,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:50:46,843 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 386 [2022-11-16 11:50:46,844 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 527 places, 491 transitions, 1974 flow. Second operand has 6 states, 6 states have (on average 233.0) internal successors, (1398), 6 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:50:46,845 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:50:46,845 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 386 [2022-11-16 11:50:46,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand