./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ac583c9331a2ad916f4c22969f16915d9226d22c75c23a992e6ef02ec672d4b3 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:53:27,893 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:53:27,896 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:53:27,931 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:53:27,932 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:53:27,933 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:53:27,938 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:53:27,946 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:53:27,952 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:53:27,955 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:53:27,956 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:53:27,957 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:53:27,958 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:53:27,959 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:53:27,960 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:53:27,961 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:53:27,962 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:53:27,968 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:53:27,970 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:53:27,976 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:53:27,978 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:53:27,979 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:53:27,980 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:53:27,981 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:53:27,985 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:53:27,985 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:53:27,985 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:53:27,986 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:53:27,987 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:53:27,988 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:53:27,988 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:53:27,989 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:53:27,990 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:53:27,991 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:53:27,992 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:53:27,992 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:53:27,993 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:53:27,993 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:53:27,994 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:53:27,995 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:53:27,995 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:53:27,996 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-18 20:53:28,018 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:53:28,019 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:53:28,019 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:53:28,019 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:53:28,020 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:53:28,020 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:53:28,021 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:53:28,021 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:53:28,022 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:53:28,022 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:53:28,022 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:53:28,023 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:53:28,023 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:53:28,023 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:53:28,024 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:53:28,024 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:53:28,024 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:53:28,024 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:53:28,025 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-18 20:53:28,025 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:53:28,025 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:53:28,026 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:53:28,026 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:53:28,026 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:53:28,026 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:53:28,027 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:53:28,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:53:28,027 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:53:28,028 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:53:28,028 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:53:28,028 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:53:28,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:53:28,029 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:53:28,029 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:53:28,029 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:53:28,030 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_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac583c9331a2ad916f4c22969f16915d9226d22c75c23a992e6ef02ec672d4b3 [2022-11-18 20:53:28,314 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:53:28,354 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:53:28,356 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:53:28,358 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:53:28,360 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:53:28,362 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i [2022-11-18 20:53:28,448 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/data/b3c4be341/e37a0f6ccc304bf69fcd567cc7f58b7c/FLAG92c666905 [2022-11-18 20:53:29,226 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:53:29,227 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i [2022-11-18 20:53:29,259 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/data/b3c4be341/e37a0f6ccc304bf69fcd567cc7f58b7c/FLAG92c666905 [2022-11-18 20:53:29,447 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/data/b3c4be341/e37a0f6ccc304bf69fcd567cc7f58b7c [2022-11-18 20:53:29,449 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:53:29,451 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:53:29,453 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:53:29,453 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:53:29,457 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:53:29,461 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:53:29" (1/1) ... [2022-11-18 20:53:29,462 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71f8fcb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:53:29, skipping insertion in model container [2022-11-18 20:53:29,464 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:53:29" (1/1) ... [2022-11-18 20:53:29,473 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:53:29,548 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:53:30,161 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i[47038,47051] [2022-11-18 20:53:30,196 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 20:53:30,198 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 20:53:30,203 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 20:53:30,205 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 20:53:30,254 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:53:30,274 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:53:30,324 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i[47038,47051] [2022-11-18 20:53:30,333 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 20:53:30,335 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 20:53:30,337 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 20:53:30,338 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 20:53:30,353 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:53:30,416 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:53:30,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:53:30 WrapperNode [2022-11-18 20:53:30,417 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:53:30,418 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:53:30,418 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:53:30,418 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:53:30,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:53:30" (1/1) ... [2022-11-18 20:53:30,468 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:53:30" (1/1) ... [2022-11-18 20:53:30,568 INFO L138 Inliner]: procedures = 277, calls = 45, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 294 [2022-11-18 20:53:30,572 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:53:30,573 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:53:30,574 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:53:30,574 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:53:30,587 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:53:30" (1/1) ... [2022-11-18 20:53:30,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:53:30" (1/1) ... [2022-11-18 20:53:30,615 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:53:30" (1/1) ... [2022-11-18 20:53:30,616 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:53:30" (1/1) ... [2022-11-18 20:53:30,645 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:53:30" (1/1) ... [2022-11-18 20:53:30,653 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:53:30" (1/1) ... [2022-11-18 20:53:30,658 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:53:30" (1/1) ... [2022-11-18 20:53:30,661 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:53:30" (1/1) ... [2022-11-18 20:53:30,673 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:53:30,675 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:53:30,675 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:53:30,675 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:53:30,676 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:53:30" (1/1) ... [2022-11-18 20:53:30,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:53:30,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:53:30,734 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:53:30,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:53:30,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:53:30,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 20:53:30,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:53:30,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:53:30,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:53:30,822 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 20:53:30,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 20:53:30,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:53:30,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 20:53:30,823 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-18 20:53:30,823 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-18 20:53:30,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:53:30,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:53:30,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:53:30,826 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:53:31,111 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:53:31,114 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:53:32,010 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:53:32,037 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:53:32,039 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-11-18 20:53:32,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:53:32 BoogieIcfgContainer [2022-11-18 20:53:32,044 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:53:32,047 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:53:32,050 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:53:32,055 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:53:32,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:53:29" (1/3) ... [2022-11-18 20:53:32,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29f834fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:53:32, skipping insertion in model container [2022-11-18 20:53:32,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:53:30" (2/3) ... [2022-11-18 20:53:32,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29f834fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:53:32, skipping insertion in model container [2022-11-18 20:53:32,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:53:32" (3/3) ... [2022-11-18 20:53:32,060 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_91-arrayloop2_racefree.i [2022-11-18 20:53:32,072 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:53:32,086 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:53:32,087 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-11-18 20:53:32,087 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:53:32,273 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-18 20:53:32,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 306 places, 327 transitions, 662 flow [2022-11-18 20:53:32,541 INFO L130 PetriNetUnfolder]: 26/350 cut-off events. [2022-11-18 20:53:32,542 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2022-11-18 20:53:32,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 356 conditions, 350 events. 26/350 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 833 event pairs, 0 based on Foata normal form. 0/302 useless extension candidates. Maximal degree in co-relation 181. Up to 4 conditions per place. [2022-11-18 20:53:32,553 INFO L82 GeneralOperation]: Start removeDead. Operand has 306 places, 327 transitions, 662 flow [2022-11-18 20:53:32,566 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 306 places, 327 transitions, 662 flow [2022-11-18 20:53:32,586 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:53:32,597 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;@6388143f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:53:32,598 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2022-11-18 20:53:32,622 INFO L130 PetriNetUnfolder]: 3/67 cut-off events. [2022-11-18 20:53:32,622 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:53:32,622 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:53:32,623 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:53:32,624 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2022-11-18 20:53:32,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:32,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1545908425, now seen corresponding path program 1 times [2022-11-18 20:53:32,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:32,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174687017] [2022-11-18 20:53:32,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:32,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:32,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:32,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:53:32,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:32,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174687017] [2022-11-18 20:53:32,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174687017] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:32,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:53:32,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:53:32,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72797975] [2022-11-18 20:53:32,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:32,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 20:53:32,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:32,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 20:53:32,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:53:32,997 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 327 [2022-11-18 20:53:33,013 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 327 transitions, 662 flow. Second operand has 2 states, 2 states have (on average 307.0) internal successors, (614), 2 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:33,015 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:53:33,015 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 327 [2022-11-18 20:53:33,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:53:33,130 INFO L130 PetriNetUnfolder]: 6/329 cut-off events. [2022-11-18 20:53:33,130 INFO L131 PetriNetUnfolder]: For 5/6 co-relation queries the response was YES. [2022-11-18 20:53:33,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 338 conditions, 329 events. 6/329 cut-off events. For 5/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 688 event pairs, 0 based on Foata normal form. 20/319 useless extension candidates. Maximal degree in co-relation 177. Up to 3 conditions per place. [2022-11-18 20:53:33,135 INFO L137 encePairwiseOnDemand]: 309/327 looper letters, 2 selfloop transitions, 0 changer transitions 0/308 dead transitions. [2022-11-18 20:53:33,135 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 308 transitions, 628 flow [2022-11-18 20:53:33,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 20:53:33,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 20:53:33,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 632 transitions. [2022-11-18 20:53:33,154 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9663608562691132 [2022-11-18 20:53:33,155 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 632 transitions. [2022-11-18 20:53:33,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 632 transitions. [2022-11-18 20:53:33,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:53:33,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 632 transitions. [2022-11-18 20:53:33,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 316.0) internal successors, (632), 2 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:33,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 327.0) internal successors, (981), 3 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:33,184 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 327.0) internal successors, (981), 3 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:33,186 INFO L175 Difference]: Start difference. First operand has 306 places, 327 transitions, 662 flow. Second operand 2 states and 632 transitions. [2022-11-18 20:53:33,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 308 transitions, 628 flow [2022-11-18 20:53:33,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 308 transitions, 628 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:53:33,210 INFO L231 Difference]: Finished difference. Result has 306 places, 308 transitions, 624 flow [2022-11-18 20:53:33,212 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=624, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=624, PETRI_PLACES=306, PETRI_TRANSITIONS=308} [2022-11-18 20:53:33,220 INFO L288 CegarLoopForPetriNet]: 306 programPoint places, 0 predicate places. [2022-11-18 20:53:33,220 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 308 transitions, 624 flow [2022-11-18 20:53:33,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 307.0) internal successors, (614), 2 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:33,222 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:53:33,222 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:53:33,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:53:33,224 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2022-11-18 20:53:33,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:33,225 INFO L85 PathProgramCache]: Analyzing trace with hash -132463319, now seen corresponding path program 1 times [2022-11-18 20:53:33,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:33,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963084857] [2022-11-18 20:53:33,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:33,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:33,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:33,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:53:33,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:33,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963084857] [2022-11-18 20:53:33,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963084857] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:33,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:53:33,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:53:33,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575629952] [2022-11-18 20:53:33,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:33,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:53:33,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:33,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:53:33,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:53:33,444 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 327 [2022-11-18 20:53:33,445 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 308 transitions, 624 flow. Second operand has 3 states, 3 states have (on average 297.0) internal successors, (891), 3 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:33,446 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:53:33,446 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 327 [2022-11-18 20:53:33,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:53:33,567 INFO L130 PetriNetUnfolder]: 7/457 cut-off events. [2022-11-18 20:53:33,567 INFO L131 PetriNetUnfolder]: For 5/6 co-relation queries the response was YES. [2022-11-18 20:53:33,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 484 conditions, 457 events. 7/457 cut-off events. For 5/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1220 event pairs, 0 based on Foata normal form. 0/416 useless extension candidates. Maximal degree in co-relation 480. Up to 13 conditions per place. [2022-11-18 20:53:33,571 INFO L137 encePairwiseOnDemand]: 324/327 looper letters, 17 selfloop transitions, 2 changer transitions 0/315 dead transitions. [2022-11-18 20:53:33,571 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 315 transitions, 676 flow [2022-11-18 20:53:33,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:53:33,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:53:33,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 908 transitions. [2022-11-18 20:53:33,575 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9255861365953109 [2022-11-18 20:53:33,576 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 908 transitions. [2022-11-18 20:53:33,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 908 transitions. [2022-11-18 20:53:33,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:53:33,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 908 transitions. [2022-11-18 20:53:33,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 302.6666666666667) internal successors, (908), 3 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:33,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:33,584 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:33,585 INFO L175 Difference]: Start difference. First operand has 306 places, 308 transitions, 624 flow. Second operand 3 states and 908 transitions. [2022-11-18 20:53:33,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 315 transitions, 676 flow [2022-11-18 20:53:33,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 315 transitions, 676 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:53:33,594 INFO L231 Difference]: Finished difference. Result has 309 places, 309 transitions, 636 flow [2022-11-18 20:53:33,594 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=624, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=636, PETRI_PLACES=309, PETRI_TRANSITIONS=309} [2022-11-18 20:53:33,595 INFO L288 CegarLoopForPetriNet]: 306 programPoint places, 3 predicate places. [2022-11-18 20:53:33,596 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 309 transitions, 636 flow [2022-11-18 20:53:33,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 297.0) internal successors, (891), 3 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:33,597 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:53:33,597 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:53:33,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:53:33,598 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2022-11-18 20:53:33,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:33,598 INFO L85 PathProgramCache]: Analyzing trace with hash -28056842, now seen corresponding path program 1 times [2022-11-18 20:53:33,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:33,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396573330] [2022-11-18 20:53:33,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:33,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:33,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:34,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:53:34,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:34,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396573330] [2022-11-18 20:53:34,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396573330] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:34,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:53:34,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:53:34,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868585672] [2022-11-18 20:53:34,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:34,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:53:34,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:34,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:53:34,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:53:34,209 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 327 [2022-11-18 20:53:34,211 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 309 transitions, 636 flow. Second operand has 6 states, 6 states have (on average 187.5) internal successors, (1125), 6 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:34,211 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:53:34,212 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 327 [2022-11-18 20:53:34,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:53:35,019 INFO L130 PetriNetUnfolder]: 278/1342 cut-off events. [2022-11-18 20:53:35,021 INFO L131 PetriNetUnfolder]: For 8/15 co-relation queries the response was YES. [2022-11-18 20:53:35,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2065 conditions, 1342 events. 278/1342 cut-off events. For 8/15 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 7652 event pairs, 252 based on Foata normal form. 0/1192 useless extension candidates. Maximal degree in co-relation 2059. Up to 688 conditions per place. [2022-11-18 20:53:35,037 INFO L137 encePairwiseOnDemand]: 315/327 looper letters, 110 selfloop transitions, 10 changer transitions 0/307 dead transitions. [2022-11-18 20:53:35,037 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 307 transitions, 872 flow [2022-11-18 20:53:35,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:53:35,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 20:53:35,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1238 transitions. [2022-11-18 20:53:35,042 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6309887869520897 [2022-11-18 20:53:35,042 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1238 transitions. [2022-11-18 20:53:35,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1238 transitions. [2022-11-18 20:53:35,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:53:35,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1238 transitions. [2022-11-18 20:53:35,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 206.33333333333334) internal successors, (1238), 6 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:35,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 327.0) internal successors, (2289), 7 states have internal predecessors, (2289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:35,055 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 327.0) internal successors, (2289), 7 states have internal predecessors, (2289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:35,055 INFO L175 Difference]: Start difference. First operand has 309 places, 309 transitions, 636 flow. Second operand 6 states and 1238 transitions. [2022-11-18 20:53:35,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 307 transitions, 872 flow [2022-11-18 20:53:35,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 307 transitions, 870 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:53:35,065 INFO L231 Difference]: Finished difference. Result has 311 places, 307 transitions, 650 flow [2022-11-18 20:53:35,066 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=630, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=650, PETRI_PLACES=311, PETRI_TRANSITIONS=307} [2022-11-18 20:53:35,070 INFO L288 CegarLoopForPetriNet]: 306 programPoint places, 5 predicate places. [2022-11-18 20:53:35,070 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 307 transitions, 650 flow [2022-11-18 20:53:35,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 187.5) internal successors, (1125), 6 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:35,071 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:53:35,072 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:53:35,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:53:35,074 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2022-11-18 20:53:35,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:35,075 INFO L85 PathProgramCache]: Analyzing trace with hash -540006301, now seen corresponding path program 1 times [2022-11-18 20:53:35,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:35,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674433271] [2022-11-18 20:53:35,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:35,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:35,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:35,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:53:35,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:35,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674433271] [2022-11-18 20:53:35,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674433271] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:35,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:53:35,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:53:35,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103910575] [2022-11-18 20:53:35,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:35,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:53:35,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:35,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:53:35,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:53:35,650 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 327 [2022-11-18 20:53:35,652 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 307 transitions, 650 flow. Second operand has 6 states, 6 states have (on average 188.5) internal successors, (1131), 6 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:35,653 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:53:35,653 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 327 [2022-11-18 20:53:35,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:53:36,287 INFO L130 PetriNetUnfolder]: 278/1338 cut-off events. [2022-11-18 20:53:36,288 INFO L131 PetriNetUnfolder]: For 11/18 co-relation queries the response was YES. [2022-11-18 20:53:36,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2076 conditions, 1338 events. 278/1338 cut-off events. For 11/18 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 7676 event pairs, 252 based on Foata normal form. 0/1192 useless extension candidates. Maximal degree in co-relation 2070. Up to 684 conditions per place. [2022-11-18 20:53:36,304 INFO L137 encePairwiseOnDemand]: 315/327 looper letters, 108 selfloop transitions, 10 changer transitions 0/305 dead transitions. [2022-11-18 20:53:36,304 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 305 transitions, 882 flow [2022-11-18 20:53:36,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:53:36,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 20:53:36,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1236 transitions. [2022-11-18 20:53:36,309 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6299694189602446 [2022-11-18 20:53:36,311 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1236 transitions. [2022-11-18 20:53:36,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1236 transitions. [2022-11-18 20:53:36,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:53:36,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1236 transitions. [2022-11-18 20:53:36,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 206.0) internal successors, (1236), 6 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:36,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 327.0) internal successors, (2289), 7 states have internal predecessors, (2289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:36,331 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 327.0) internal successors, (2289), 7 states have internal predecessors, (2289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:36,331 INFO L175 Difference]: Start difference. First operand has 311 places, 307 transitions, 650 flow. Second operand 6 states and 1236 transitions. [2022-11-18 20:53:36,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 305 transitions, 882 flow [2022-11-18 20:53:36,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 305 transitions, 862 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 20:53:36,341 INFO L231 Difference]: Finished difference. Result has 309 places, 305 transitions, 646 flow [2022-11-18 20:53:36,342 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=626, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=646, PETRI_PLACES=309, PETRI_TRANSITIONS=305} [2022-11-18 20:53:36,344 INFO L288 CegarLoopForPetriNet]: 306 programPoint places, 3 predicate places. [2022-11-18 20:53:36,344 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 305 transitions, 646 flow [2022-11-18 20:53:36,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 188.5) internal successors, (1131), 6 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:36,345 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:53:36,345 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:53:36,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:53:36,347 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2022-11-18 20:53:36,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:36,348 INFO L85 PathProgramCache]: Analyzing trace with hash 693202064, now seen corresponding path program 1 times [2022-11-18 20:53:36,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:36,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740822328] [2022-11-18 20:53:36,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:36,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:36,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:36,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:53:36,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:36,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740822328] [2022-11-18 20:53:36,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740822328] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:36,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:53:36,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:53:36,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142926533] [2022-11-18 20:53:36,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:36,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:53:36,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:36,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:53:36,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:53:36,447 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 327 [2022-11-18 20:53:36,448 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 305 transitions, 646 flow. Second operand has 3 states, 3 states have (on average 300.0) internal successors, (900), 3 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:36,449 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:53:36,449 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 327 [2022-11-18 20:53:36,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:53:36,624 INFO L130 PetriNetUnfolder]: 7/641 cut-off events. [2022-11-18 20:53:36,624 INFO L131 PetriNetUnfolder]: For 5/6 co-relation queries the response was YES. [2022-11-18 20:53:36,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 708 conditions, 641 events. 7/641 cut-off events. For 5/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1187 event pairs, 0 based on Foata normal form. 0/597 useless extension candidates. Maximal degree in co-relation 702. Up to 16 conditions per place. [2022-11-18 20:53:36,627 INFO L137 encePairwiseOnDemand]: 324/327 looper letters, 11 selfloop transitions, 2 changer transitions 0/309 dead transitions. [2022-11-18 20:53:36,627 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 309 transitions, 680 flow [2022-11-18 20:53:36,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:53:36,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:53:36,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 911 transitions. [2022-11-18 20:53:36,631 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.928644240570846 [2022-11-18 20:53:36,632 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 911 transitions. [2022-11-18 20:53:36,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 911 transitions. [2022-11-18 20:53:36,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:53:36,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 911 transitions. [2022-11-18 20:53:36,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 303.6666666666667) internal successors, (911), 3 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:36,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:36,640 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:36,641 INFO L175 Difference]: Start difference. First operand has 309 places, 305 transitions, 646 flow. Second operand 3 states and 911 transitions. [2022-11-18 20:53:36,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 309 transitions, 680 flow [2022-11-18 20:53:36,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 309 transitions, 660 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 20:53:36,648 INFO L231 Difference]: Finished difference. Result has 307 places, 306 transitions, 638 flow [2022-11-18 20:53:36,649 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=626, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=638, PETRI_PLACES=307, PETRI_TRANSITIONS=306} [2022-11-18 20:53:36,653 INFO L288 CegarLoopForPetriNet]: 306 programPoint places, 1 predicate places. [2022-11-18 20:53:36,653 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 306 transitions, 638 flow [2022-11-18 20:53:36,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 300.0) internal successors, (900), 3 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:36,654 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:53:36,655 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:53:36,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:53:36,656 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2022-11-18 20:53:36,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:36,657 INFO L85 PathProgramCache]: Analyzing trace with hash -442811384, now seen corresponding path program 1 times [2022-11-18 20:53:36,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:36,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648221090] [2022-11-18 20:53:36,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:36,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:36,699 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:53:36,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1802158634] [2022-11-18 20:53:36,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:36,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:53:36,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:53:36,707 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:53:36,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:53:36,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:36,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-18 20:53:36,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:53:37,031 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 [2022-11-18 20:53:37,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:53:37,077 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 [2022-11-18 20:53:37,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:53:37,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:53:37,139 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:53:37,139 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 [2022-11-18 20:53:37,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:53:37,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:53:37,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:53:37,199 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:53:37,200 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 [2022-11-18 20:53:37,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:53:37,243 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:53:37,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:37,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648221090] [2022-11-18 20:53:37,245 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:53:37,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802158634] [2022-11-18 20:53:37,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802158634] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:37,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:53:37,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:53:37,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751442100] [2022-11-18 20:53:37,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:37,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:53:37,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:37,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:53:37,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:53:37,251 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 327 [2022-11-18 20:53:37,253 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 306 transitions, 638 flow. Second operand has 8 states, 8 states have (on average 191.625) internal successors, (1533), 8 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:37,253 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:53:37,253 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 327 [2022-11-18 20:53:37,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:53:38,056 INFO L130 PetriNetUnfolder]: 278/1526 cut-off events. [2022-11-18 20:53:38,056 INFO L131 PetriNetUnfolder]: For 9/16 co-relation queries the response was YES. [2022-11-18 20:53:38,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2355 conditions, 1526 events. 278/1526 cut-off events. For 9/16 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 7638 event pairs, 252 based on Foata normal form. 0/1374 useless extension candidates. Maximal degree in co-relation 2348. Up to 761 conditions per place. [2022-11-18 20:53:38,065 INFO L137 encePairwiseOnDemand]: 317/327 looper letters, 116 selfloop transitions, 9 changer transitions 0/316 dead transitions. [2022-11-18 20:53:38,065 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 316 transitions, 908 flow [2022-11-18 20:53:38,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:53:38,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:53:38,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1827 transitions. [2022-11-18 20:53:38,072 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6207951070336392 [2022-11-18 20:53:38,072 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1827 transitions. [2022-11-18 20:53:38,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1827 transitions. [2022-11-18 20:53:38,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:53:38,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1827 transitions. [2022-11-18 20:53:38,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 203.0) internal successors, (1827), 9 states have internal predecessors, (1827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:38,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:38,093 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:38,094 INFO L175 Difference]: Start difference. First operand has 307 places, 306 transitions, 638 flow. Second operand 9 states and 1827 transitions. [2022-11-18 20:53:38,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 316 transitions, 908 flow [2022-11-18 20:53:38,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 316 transitions, 906 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:53:38,110 INFO L231 Difference]: Finished difference. Result has 314 places, 306 transitions, 660 flow [2022-11-18 20:53:38,111 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=634, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=660, PETRI_PLACES=314, PETRI_TRANSITIONS=306} [2022-11-18 20:53:38,114 INFO L288 CegarLoopForPetriNet]: 306 programPoint places, 8 predicate places. [2022-11-18 20:53:38,115 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 306 transitions, 660 flow [2022-11-18 20:53:38,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 191.625) internal successors, (1533), 8 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:38,116 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:53:38,116 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:53:38,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:53:38,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:53:38,324 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2022-11-18 20:53:38,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:38,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1660347265, now seen corresponding path program 1 times [2022-11-18 20:53:38,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:38,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285103872] [2022-11-18 20:53:38,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:38,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:38,379 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:53:38,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [544067651] [2022-11-18 20:53:38,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:38,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:53:38,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:53:38,381 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:53:38,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:53:38,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:38,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 20:53:38,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:53:38,616 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 [2022-11-18 20:53:38,628 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 [2022-11-18 20:53:38,652 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:53:38,653 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 [2022-11-18 20:53:38,689 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:53:38,690 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 [2022-11-18 20:53:38,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:53:38,718 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:53:38,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:38,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285103872] [2022-11-18 20:53:38,719 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:53:38,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544067651] [2022-11-18 20:53:38,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544067651] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:38,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:53:38,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:53:38,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600625195] [2022-11-18 20:53:38,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:38,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:53:38,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:38,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:53:38,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:53:38,723 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 327 [2022-11-18 20:53:38,725 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 306 transitions, 660 flow. Second operand has 6 states, 6 states have (on average 198.5) internal successors, (1191), 6 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:38,725 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:53:38,726 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 327 [2022-11-18 20:53:38,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:53:39,247 INFO L130 PetriNetUnfolder]: 278/1522 cut-off events. [2022-11-18 20:53:39,247 INFO L131 PetriNetUnfolder]: For 15/22 co-relation queries the response was YES. [2022-11-18 20:53:39,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2373 conditions, 1522 events. 278/1522 cut-off events. For 15/22 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 7643 event pairs, 252 based on Foata normal form. 0/1374 useless extension candidates. Maximal degree in co-relation 2365. Up to 764 conditions per place. [2022-11-18 20:53:39,257 INFO L137 encePairwiseOnDemand]: 321/327 looper letters, 104 selfloop transitions, 5 changer transitions 0/305 dead transitions. [2022-11-18 20:53:39,257 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 305 transitions, 876 flow [2022-11-18 20:53:39,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:53:39,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 20:53:39,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1268 transitions. [2022-11-18 20:53:39,263 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6462793068297655 [2022-11-18 20:53:39,263 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1268 transitions. [2022-11-18 20:53:39,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1268 transitions. [2022-11-18 20:53:39,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:53:39,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1268 transitions. [2022-11-18 20:53:39,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 211.33333333333334) internal successors, (1268), 6 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:39,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 327.0) internal successors, (2289), 7 states have internal predecessors, (2289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:39,276 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 327.0) internal successors, (2289), 7 states have internal predecessors, (2289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:39,276 INFO L175 Difference]: Start difference. First operand has 314 places, 306 transitions, 660 flow. Second operand 6 states and 1268 transitions. [2022-11-18 20:53:39,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 305 transitions, 876 flow [2022-11-18 20:53:39,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 305 transitions, 862 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-18 20:53:39,287 INFO L231 Difference]: Finished difference. Result has 311 places, 305 transitions, 654 flow [2022-11-18 20:53:39,288 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=644, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=654, PETRI_PLACES=311, PETRI_TRANSITIONS=305} [2022-11-18 20:53:39,289 INFO L288 CegarLoopForPetriNet]: 306 programPoint places, 5 predicate places. [2022-11-18 20:53:39,289 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 305 transitions, 654 flow [2022-11-18 20:53:39,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 198.5) internal successors, (1191), 6 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:39,290 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:53:39,290 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:53:39,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:53:39,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-18 20:53:39,498 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2022-11-18 20:53:39,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:39,499 INFO L85 PathProgramCache]: Analyzing trace with hash -478428148, now seen corresponding path program 1 times [2022-11-18 20:53:39,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:39,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538149547] [2022-11-18 20:53:39,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:39,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:39,535 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:53:39,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2045371614] [2022-11-18 20:53:39,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:39,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:53:39,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:53:39,537 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:53:39,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:53:39,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:39,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 20:53:39,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:53:39,818 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 [2022-11-18 20:53:39,831 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 [2022-11-18 20:53:39,856 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:53:39,857 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 [2022-11-18 20:53:39,895 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:53:39,895 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 [2022-11-18 20:53:39,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:53:39,927 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:53:39,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:39,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538149547] [2022-11-18 20:53:39,927 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:53:39,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045371614] [2022-11-18 20:53:39,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045371614] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:39,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:53:39,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:53:39,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431540785] [2022-11-18 20:53:39,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:39,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:53:39,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:39,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:53:39,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:53:39,932 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 327 [2022-11-18 20:53:39,934 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 305 transitions, 654 flow. Second operand has 6 states, 6 states have (on average 198.5) internal successors, (1191), 6 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:39,934 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:53:39,934 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 327 [2022-11-18 20:53:39,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:53:40,716 INFO L130 PetriNetUnfolder]: 278/1518 cut-off events. [2022-11-18 20:53:40,716 INFO L131 PetriNetUnfolder]: For 15/22 co-relation queries the response was YES. [2022-11-18 20:53:40,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2362 conditions, 1518 events. 278/1518 cut-off events. For 15/22 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 7596 event pairs, 252 based on Foata normal form. 0/1374 useless extension candidates. Maximal degree in co-relation 2354. Up to 764 conditions per place. [2022-11-18 20:53:40,727 INFO L137 encePairwiseOnDemand]: 321/327 looper letters, 104 selfloop transitions, 5 changer transitions 0/304 dead transitions. [2022-11-18 20:53:40,727 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 304 transitions, 870 flow [2022-11-18 20:53:40,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:53:40,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 20:53:40,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1262 transitions. [2022-11-18 20:53:40,731 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6432212028542303 [2022-11-18 20:53:40,732 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1262 transitions. [2022-11-18 20:53:40,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1262 transitions. [2022-11-18 20:53:40,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:53:40,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1262 transitions. [2022-11-18 20:53:40,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 210.33333333333334) internal successors, (1262), 6 states have internal predecessors, (1262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:40,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 327.0) internal successors, (2289), 7 states have internal predecessors, (2289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:40,743 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 327.0) internal successors, (2289), 7 states have internal predecessors, (2289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:40,743 INFO L175 Difference]: Start difference. First operand has 311 places, 305 transitions, 654 flow. Second operand 6 states and 1262 transitions. [2022-11-18 20:53:40,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 304 transitions, 870 flow [2022-11-18 20:53:40,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 304 transitions, 860 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 20:53:40,752 INFO L231 Difference]: Finished difference. Result has 310 places, 304 transitions, 652 flow [2022-11-18 20:53:40,753 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=642, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=652, PETRI_PLACES=310, PETRI_TRANSITIONS=304} [2022-11-18 20:53:40,754 INFO L288 CegarLoopForPetriNet]: 306 programPoint places, 4 predicate places. [2022-11-18 20:53:40,754 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 304 transitions, 652 flow [2022-11-18 20:53:40,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 198.5) internal successors, (1191), 6 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:40,755 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:53:40,755 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:53:40,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:53:40,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:53:40,964 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2022-11-18 20:53:40,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:40,964 INFO L85 PathProgramCache]: Analyzing trace with hash -299965314, now seen corresponding path program 1 times [2022-11-18 20:53:40,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:40,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855408855] [2022-11-18 20:53:40,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:40,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:41,019 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:53:41,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1440762851] [2022-11-18 20:53:41,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:41,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:53:41,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:53:41,022 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:53:41,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:53:41,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:41,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-18 20:53:41,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:53:41,566 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 [2022-11-18 20:53:41,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:53:41,632 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 [2022-11-18 20:53:41,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:53:41,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:53:41,711 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:53:41,711 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 [2022-11-18 20:53:41,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:53:41,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:53:41,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:53:41,790 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:53:41,791 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 [2022-11-18 20:53:41,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:53:41,835 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:53:41,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:41,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855408855] [2022-11-18 20:53:41,836 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:53:41,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440762851] [2022-11-18 20:53:41,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440762851] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:41,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:53:41,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 20:53:41,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145813382] [2022-11-18 20:53:41,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:41,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 20:53:41,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:41,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 20:53:41,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:53:41,844 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 327 [2022-11-18 20:53:41,849 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 304 transitions, 652 flow. Second operand has 13 states, 13 states have (on average 179.53846153846155) internal successors, (2334), 13 states have internal predecessors, (2334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:41,850 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:53:41,850 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 327 [2022-11-18 20:53:41,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:53:43,058 INFO L130 PetriNetUnfolder]: 278/1514 cut-off events. [2022-11-18 20:53:43,058 INFO L131 PetriNetUnfolder]: For 15/22 co-relation queries the response was YES. [2022-11-18 20:53:43,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2415 conditions, 1514 events. 278/1514 cut-off events. For 15/22 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 7572 event pairs, 252 based on Foata normal form. 0/1374 useless extension candidates. Maximal degree in co-relation 2407. Up to 574 conditions per place. [2022-11-18 20:53:43,067 INFO L137 encePairwiseOnDemand]: 308/327 looper letters, 140 selfloop transitions, 26 changer transitions 0/343 dead transitions. [2022-11-18 20:53:43,067 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 343 transitions, 1068 flow [2022-11-18 20:53:43,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 20:53:43,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 20:53:43,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3842 transitions. [2022-11-18 20:53:43,083 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5594874035241008 [2022-11-18 20:53:43,083 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3842 transitions. [2022-11-18 20:53:43,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3842 transitions. [2022-11-18 20:53:43,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:53:43,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3842 transitions. [2022-11-18 20:53:43,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 182.95238095238096) internal successors, (3842), 21 states have internal predecessors, (3842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:43,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 327.0) internal successors, (7194), 22 states have internal predecessors, (7194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:43,116 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 327.0) internal successors, (7194), 22 states have internal predecessors, (7194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:43,116 INFO L175 Difference]: Start difference. First operand has 310 places, 304 transitions, 652 flow. Second operand 21 states and 3842 transitions. [2022-11-18 20:53:43,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 343 transitions, 1068 flow [2022-11-18 20:53:43,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 343 transitions, 1058 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 20:53:43,125 INFO L231 Difference]: Finished difference. Result has 327 places, 315 transitions, 741 flow [2022-11-18 20:53:43,126 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=640, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=741, PETRI_PLACES=327, PETRI_TRANSITIONS=315} [2022-11-18 20:53:43,127 INFO L288 CegarLoopForPetriNet]: 306 programPoint places, 21 predicate places. [2022-11-18 20:53:43,127 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 315 transitions, 741 flow [2022-11-18 20:53:43,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 179.53846153846155) internal successors, (2334), 13 states have internal predecessors, (2334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:43,130 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:53:43,130 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:53:43,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:53:43,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:53:43,338 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2022-11-18 20:53:43,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:43,338 INFO L85 PathProgramCache]: Analyzing trace with hash -807861727, now seen corresponding path program 1 times [2022-11-18 20:53:43,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:43,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018457298] [2022-11-18 20:53:43,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:43,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:43,379 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:53:43,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1752471632] [2022-11-18 20:53:43,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:43,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:53:43,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:53:43,395 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:53:43,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 20:53:43,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:43,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-18 20:53:43,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:53:43,891 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 [2022-11-18 20:53:43,922 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 [2022-11-18 20:53:43,974 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:53:43,975 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 [2022-11-18 20:53:44,021 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:53:44,022 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 [2022-11-18 20:53:44,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:53:44,068 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:53:44,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:44,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018457298] [2022-11-18 20:53:44,069 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:53:44,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752471632] [2022-11-18 20:53:44,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752471632] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:44,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:53:44,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 20:53:44,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635972270] [2022-11-18 20:53:44,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:44,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 20:53:44,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:44,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 20:53:44,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:53:44,075 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 327 [2022-11-18 20:53:44,079 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 315 transitions, 741 flow. Second operand has 13 states, 13 states have (on average 180.0) internal successors, (2340), 13 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:44,079 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:53:44,079 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 327 [2022-11-18 20:53:44,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:53:45,252 INFO L130 PetriNetUnfolder]: 278/1510 cut-off events. [2022-11-18 20:53:45,253 INFO L131 PetriNetUnfolder]: For 59/66 co-relation queries the response was YES. [2022-11-18 20:53:45,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2477 conditions, 1510 events. 278/1510 cut-off events. For 59/66 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 7563 event pairs, 252 based on Foata normal form. 0/1374 useless extension candidates. Maximal degree in co-relation 2466. Up to 574 conditions per place. [2022-11-18 20:53:45,264 INFO L137 encePairwiseOnDemand]: 308/327 looper letters, 139 selfloop transitions, 26 changer transitions 0/342 dead transitions. [2022-11-18 20:53:45,264 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 342 transitions, 1127 flow [2022-11-18 20:53:45,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 20:53:45,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 20:53:45,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3841 transitions. [2022-11-18 20:53:45,274 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5593417795252658 [2022-11-18 20:53:45,275 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3841 transitions. [2022-11-18 20:53:45,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3841 transitions. [2022-11-18 20:53:45,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:53:45,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3841 transitions. [2022-11-18 20:53:45,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 182.9047619047619) internal successors, (3841), 21 states have internal predecessors, (3841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:45,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 327.0) internal successors, (7194), 22 states have internal predecessors, (7194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:45,302 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 327.0) internal successors, (7194), 22 states have internal predecessors, (7194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:45,302 INFO L175 Difference]: Start difference. First operand has 327 places, 315 transitions, 741 flow. Second operand 21 states and 3841 transitions. [2022-11-18 20:53:45,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 342 transitions, 1127 flow [2022-11-18 20:53:45,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 342 transitions, 1108 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-18 20:53:45,312 INFO L231 Difference]: Finished difference. Result has 339 places, 314 transitions, 772 flow [2022-11-18 20:53:45,313 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=720, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=772, PETRI_PLACES=339, PETRI_TRANSITIONS=314} [2022-11-18 20:53:45,313 INFO L288 CegarLoopForPetriNet]: 306 programPoint places, 33 predicate places. [2022-11-18 20:53:45,314 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 314 transitions, 772 flow [2022-11-18 20:53:45,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 180.0) internal successors, (2340), 13 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:45,315 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:53:45,315 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:53:45,328 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-18 20:53:45,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 20:53:45,523 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2022-11-18 20:53:45,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:45,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1172749453, now seen corresponding path program 1 times [2022-11-18 20:53:45,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:45,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902335039] [2022-11-18 20:53:45,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:45,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:45,563 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:53:45,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [68203325] [2022-11-18 20:53:45,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:45,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:53:45,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:53:45,565 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:53:45,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 20:53:45,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:45,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 20:53:45,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:53:45,844 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 [2022-11-18 20:53:45,858 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 [2022-11-18 20:53:45,881 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:53:45,881 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 [2022-11-18 20:53:45,906 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:53:45,906 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 [2022-11-18 20:53:45,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:53:45,928 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:53:45,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:45,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902335039] [2022-11-18 20:53:45,929 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:53:45,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68203325] [2022-11-18 20:53:45,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68203325] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:45,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:53:45,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:53:45,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610941545] [2022-11-18 20:53:45,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:45,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:53:45,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:45,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:53:45,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:53:45,935 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 327 [2022-11-18 20:53:45,937 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 314 transitions, 772 flow. Second operand has 6 states, 6 states have (on average 200.33333333333334) internal successors, (1202), 6 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:45,937 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:53:45,937 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 327 [2022-11-18 20:53:45,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:53:46,463 INFO L130 PetriNetUnfolder]: 278/1506 cut-off events. [2022-11-18 20:53:46,464 INFO L131 PetriNetUnfolder]: For 64/71 co-relation queries the response was YES. [2022-11-18 20:53:46,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2448 conditions, 1506 events. 278/1506 cut-off events. For 64/71 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 7565 event pairs, 252 based on Foata normal form. 0/1374 useless extension candidates. Maximal degree in co-relation 2436. Up to 756 conditions per place. [2022-11-18 20:53:46,473 INFO L137 encePairwiseOnDemand]: 321/327 looper letters, 103 selfloop transitions, 5 changer transitions 0/313 dead transitions. [2022-11-18 20:53:46,473 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 313 transitions, 986 flow [2022-11-18 20:53:46,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:53:46,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 20:53:46,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1254 transitions. [2022-11-18 20:53:46,477 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6391437308868502 [2022-11-18 20:53:46,477 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1254 transitions. [2022-11-18 20:53:46,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1254 transitions. [2022-11-18 20:53:46,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:53:46,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1254 transitions. [2022-11-18 20:53:46,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 209.0) internal successors, (1254), 6 states have internal predecessors, (1254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:46,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 327.0) internal successors, (2289), 7 states have internal predecessors, (2289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:46,485 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 327.0) internal successors, (2289), 7 states have internal predecessors, (2289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:46,485 INFO L175 Difference]: Start difference. First operand has 339 places, 314 transitions, 772 flow. Second operand 6 states and 1254 transitions. [2022-11-18 20:53:46,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 313 transitions, 986 flow [2022-11-18 20:53:46,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 313 transitions, 940 flow, removed 0 selfloop flow, removed 19 redundant places. [2022-11-18 20:53:46,493 INFO L231 Difference]: Finished difference. Result has 324 places, 313 transitions, 734 flow [2022-11-18 20:53:46,493 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=724, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=734, PETRI_PLACES=324, PETRI_TRANSITIONS=313} [2022-11-18 20:53:46,494 INFO L288 CegarLoopForPetriNet]: 306 programPoint places, 18 predicate places. [2022-11-18 20:53:46,494 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 313 transitions, 734 flow [2022-11-18 20:53:46,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 200.33333333333334) internal successors, (1202), 6 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:46,495 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:53:46,495 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:53:46,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 20:53:46,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-18 20:53:46,703 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2022-11-18 20:53:46,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:46,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1809190033, now seen corresponding path program 1 times [2022-11-18 20:53:46,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:46,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992371595] [2022-11-18 20:53:46,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:46,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:46,739 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:53:46,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1819651986] [2022-11-18 20:53:46,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:46,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:53:46,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:53:46,742 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:53:46,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 20:53:47,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:47,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:53:47,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:53:47,040 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:53:47,040 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:53:47,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:47,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992371595] [2022-11-18 20:53:47,041 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:53:47,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819651986] [2022-11-18 20:53:47,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819651986] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:47,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:53:47,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:53:47,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389946690] [2022-11-18 20:53:47,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:47,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:53:47,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:47,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:53:47,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:53:47,044 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 327 [2022-11-18 20:53:47,045 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 313 transitions, 734 flow. Second operand has 3 states, 3 states have (on average 300.0) internal successors, (900), 3 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:47,045 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:53:47,045 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 327 [2022-11-18 20:53:47,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:53:47,156 INFO L130 PetriNetUnfolder]: 6/615 cut-off events. [2022-11-18 20:53:47,156 INFO L131 PetriNetUnfolder]: For 21/27 co-relation queries the response was YES. [2022-11-18 20:53:47,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 760 conditions, 615 events. 6/615 cut-off events. For 21/27 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1129 event pairs, 0 based on Foata normal form. 1/599 useless extension candidates. Maximal degree in co-relation 748. Up to 13 conditions per place. [2022-11-18 20:53:47,158 INFO L137 encePairwiseOnDemand]: 324/327 looper letters, 9 selfloop transitions, 2 changer transitions 0/315 dead transitions. [2022-11-18 20:53:47,158 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 315 transitions, 760 flow [2022-11-18 20:53:47,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:53:47,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:53:47,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 909 transitions. [2022-11-18 20:53:47,161 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.926605504587156 [2022-11-18 20:53:47,161 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 909 transitions. [2022-11-18 20:53:47,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 909 transitions. [2022-11-18 20:53:47,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:53:47,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 909 transitions. [2022-11-18 20:53:47,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 303.0) internal successors, (909), 3 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:47,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:47,166 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:47,167 INFO L175 Difference]: Start difference. First operand has 324 places, 313 transitions, 734 flow. Second operand 3 states and 909 transitions. [2022-11-18 20:53:47,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 315 transitions, 760 flow [2022-11-18 20:53:47,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 315 transitions, 750 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 20:53:47,173 INFO L231 Difference]: Finished difference. Result has 322 places, 313 transitions, 732 flow [2022-11-18 20:53:47,174 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=724, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=732, PETRI_PLACES=322, PETRI_TRANSITIONS=313} [2022-11-18 20:53:47,174 INFO L288 CegarLoopForPetriNet]: 306 programPoint places, 16 predicate places. [2022-11-18 20:53:47,174 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 313 transitions, 732 flow [2022-11-18 20:53:47,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 300.0) internal successors, (900), 3 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:47,175 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:53:47,176 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:53:47,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 20:53:47,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-18 20:53:47,383 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2022-11-18 20:53:47,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:47,384 INFO L85 PathProgramCache]: Analyzing trace with hash -298058018, now seen corresponding path program 1 times [2022-11-18 20:53:47,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:47,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371869743] [2022-11-18 20:53:47,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:47,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:47,419 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:53:47,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [741865942] [2022-11-18 20:53:47,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:47,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:53:47,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:53:47,421 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:53:47,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 20:53:47,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:47,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 592 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:53:47,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:53:47,923 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:53:47,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:53:48,084 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:53:48,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:48,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371869743] [2022-11-18 20:53:48,085 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:53:48,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741865942] [2022-11-18 20:53:48,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741865942] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:53:48,085 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:53:48,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-18 20:53:48,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956339420] [2022-11-18 20:53:48,086 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:53:48,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:53:48,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:48,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:53:48,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:53:48,090 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 327 [2022-11-18 20:53:48,092 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 313 transitions, 732 flow. Second operand has 8 states, 8 states have (on average 300.0) internal successors, (2400), 8 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:48,093 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:53:48,093 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 327 [2022-11-18 20:53:48,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:53:48,325 INFO L130 PetriNetUnfolder]: 6/801 cut-off events. [2022-11-18 20:53:48,326 INFO L131 PetriNetUnfolder]: For 36/37 co-relation queries the response was YES. [2022-11-18 20:53:48,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1005 conditions, 801 events. 6/801 cut-off events. For 36/37 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 656 event pairs, 0 based on Foata normal form. 4/789 useless extension candidates. Maximal degree in co-relation 992. Up to 19 conditions per place. [2022-11-18 20:53:48,329 INFO L137 encePairwiseOnDemand]: 321/327 looper letters, 12 selfloop transitions, 9 changer transitions 0/323 dead transitions. [2022-11-18 20:53:48,329 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 323 transitions, 796 flow [2022-11-18 20:53:48,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:53:48,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:53:48,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2705 transitions. [2022-11-18 20:53:48,334 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9191301393136255 [2022-11-18 20:53:48,334 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2705 transitions. [2022-11-18 20:53:48,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2705 transitions. [2022-11-18 20:53:48,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:53:48,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2705 transitions. [2022-11-18 20:53:48,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 300.55555555555554) internal successors, (2705), 9 states have internal predecessors, (2705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:48,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:48,345 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:48,346 INFO L175 Difference]: Start difference. First operand has 322 places, 313 transitions, 732 flow. Second operand 9 states and 2705 transitions. [2022-11-18 20:53:48,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 323 transitions, 796 flow [2022-11-18 20:53:48,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 323 transitions, 792 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:53:48,353 INFO L231 Difference]: Finished difference. Result has 331 places, 319 transitions, 778 flow [2022-11-18 20:53:48,353 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=728, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=778, PETRI_PLACES=331, PETRI_TRANSITIONS=319} [2022-11-18 20:53:48,354 INFO L288 CegarLoopForPetriNet]: 306 programPoint places, 25 predicate places. [2022-11-18 20:53:48,354 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 319 transitions, 778 flow [2022-11-18 20:53:48,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 300.0) internal successors, (2400), 8 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:48,355 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:53:48,356 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:53:48,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 20:53:48,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:53:48,563 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2022-11-18 20:53:48,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:48,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1518609538, now seen corresponding path program 2 times [2022-11-18 20:53:48,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:48,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080822095] [2022-11-18 20:53:48,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:48,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:48,636 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:53:48,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1183044433] [2022-11-18 20:53:48,636 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:53:48,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:53:48,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:53:48,638 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:53:48,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 20:53:49,141 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:53:49,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:53:49,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 1330 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:53:49,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:53:49,610 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 1 proven. 276 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:53:49,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:53:50,279 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 1 proven. 276 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:53:50,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:50,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080822095] [2022-11-18 20:53:50,280 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:53:50,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183044433] [2022-11-18 20:53:50,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183044433] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:53:50,280 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:53:50,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-18 20:53:50,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226636146] [2022-11-18 20:53:50,281 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:53:50,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 20:53:50,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:50,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 20:53:50,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:53:50,291 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 327 [2022-11-18 20:53:50,297 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 319 transitions, 778 flow. Second operand has 16 states, 16 states have (on average 300.25) internal successors, (4804), 16 states have internal predecessors, (4804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:50,298 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:53:50,298 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 327 [2022-11-18 20:53:50,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:53:51,272 INFO L130 PetriNetUnfolder]: 6/1529 cut-off events. [2022-11-18 20:53:51,272 INFO L131 PetriNetUnfolder]: For 133/134 co-relation queries the response was YES. [2022-11-18 20:53:51,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2045 conditions, 1529 events. 6/1529 cut-off events. For 133/134 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 657 event pairs, 0 based on Foata normal form. 8/1521 useless extension candidates. Maximal degree in co-relation 2030. Up to 43 conditions per place. [2022-11-18 20:53:51,277 INFO L137 encePairwiseOnDemand]: 321/327 looper letters, 20 selfloop transitions, 21 changer transitions 0/343 dead transitions. [2022-11-18 20:53:51,278 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 343 transitions, 968 flow [2022-11-18 20:53:51,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 20:53:51,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 20:53:51,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 6303 transitions. [2022-11-18 20:53:51,287 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9178680646570555 [2022-11-18 20:53:51,287 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 6303 transitions. [2022-11-18 20:53:51,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 6303 transitions. [2022-11-18 20:53:51,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:53:51,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 6303 transitions. [2022-11-18 20:53:51,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 300.14285714285717) internal successors, (6303), 21 states have internal predecessors, (6303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:51,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 327.0) internal successors, (7194), 22 states have internal predecessors, (7194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:51,313 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 327.0) internal successors, (7194), 22 states have internal predecessors, (7194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:51,313 INFO L175 Difference]: Start difference. First operand has 331 places, 319 transitions, 778 flow. Second operand 21 states and 6303 transitions. [2022-11-18 20:53:51,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 343 transitions, 968 flow [2022-11-18 20:53:51,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 343 transitions, 954 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-18 20:53:51,323 INFO L231 Difference]: Finished difference. Result has 355 places, 332 transitions, 902 flow [2022-11-18 20:53:51,324 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=772, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=902, PETRI_PLACES=355, PETRI_TRANSITIONS=332} [2022-11-18 20:53:51,324 INFO L288 CegarLoopForPetriNet]: 306 programPoint places, 49 predicate places. [2022-11-18 20:53:51,324 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 332 transitions, 902 flow [2022-11-18 20:53:51,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 300.25) internal successors, (4804), 16 states have internal predecessors, (4804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:51,326 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:53:51,327 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:53:51,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 20:53:51,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:53:51,536 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2022-11-18 20:53:51,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:51,537 INFO L85 PathProgramCache]: Analyzing trace with hash 106982590, now seen corresponding path program 3 times [2022-11-18 20:53:51,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:51,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100793829] [2022-11-18 20:53:51,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:51,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:51,683 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:53:51,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [716069107] [2022-11-18 20:53:51,684 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:53:51,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:53:51,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:53:51,686 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:53:51,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 20:53:52,293 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-18 20:53:52,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:53:52,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:53:52,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:53:53,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1924 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1923 trivial. 0 not checked. [2022-11-18 20:53:53,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:53:54,732 INFO L134 CoverageAnalysis]: Checked inductivity of 1924 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1923 trivial. 0 not checked. [2022-11-18 20:53:54,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:54,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100793829] [2022-11-18 20:53:54,732 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:53:54,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716069107] [2022-11-18 20:53:54,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716069107] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:53:54,733 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:53:54,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-18 20:53:54,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313884485] [2022-11-18 20:53:54,735 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:53:54,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:53:54,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:54,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:53:54,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:53:54,740 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 327 [2022-11-18 20:53:54,742 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 332 transitions, 902 flow. Second operand has 8 states, 8 states have (on average 297.75) internal successors, (2382), 8 states have internal predecessors, (2382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:54,742 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:53:54,742 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 327 [2022-11-18 20:53:54,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:53:56,196 INFO L130 PetriNetUnfolder]: 7/2197 cut-off events. [2022-11-18 20:53:56,197 INFO L131 PetriNetUnfolder]: For 243/244 co-relation queries the response was YES. [2022-11-18 20:53:56,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3004 conditions, 2197 events. 7/2197 cut-off events. For 243/244 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 319 event pairs, 0 based on Foata normal form. 2/2183 useless extension candidates. Maximal degree in co-relation 2984. Up to 64 conditions per place. [2022-11-18 20:53:56,206 INFO L137 encePairwiseOnDemand]: 321/327 looper letters, 22 selfloop transitions, 9 changer transitions 0/347 dead transitions. [2022-11-18 20:53:56,206 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 347 transitions, 1003 flow [2022-11-18 20:53:56,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:53:56,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:53:56,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2687 transitions. [2022-11-18 20:53:56,211 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9130139313625553 [2022-11-18 20:53:56,211 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2687 transitions. [2022-11-18 20:53:56,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2687 transitions. [2022-11-18 20:53:56,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:53:56,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2687 transitions. [2022-11-18 20:53:56,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 298.55555555555554) internal successors, (2687), 9 states have internal predecessors, (2687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:56,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:56,295 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:56,296 INFO L175 Difference]: Start difference. First operand has 355 places, 332 transitions, 902 flow. Second operand 9 states and 2687 transitions. [2022-11-18 20:53:56,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 347 transitions, 1003 flow [2022-11-18 20:53:56,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 347 transitions, 979 flow, removed 6 selfloop flow, removed 6 redundant places. [2022-11-18 20:53:56,307 INFO L231 Difference]: Finished difference. Result has 360 places, 338 transitions, 928 flow [2022-11-18 20:53:56,308 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=878, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=928, PETRI_PLACES=360, PETRI_TRANSITIONS=338} [2022-11-18 20:53:56,308 INFO L288 CegarLoopForPetriNet]: 306 programPoint places, 54 predicate places. [2022-11-18 20:53:56,309 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 338 transitions, 928 flow [2022-11-18 20:53:56,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 297.75) internal successors, (2382), 8 states have internal predecessors, (2382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:53:56,310 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:53:56,311 INFO L209 CegarLoopForPetriNet]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:53:56,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 20:53:56,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:53:56,520 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2022-11-18 20:53:56,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:56,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1017629630, now seen corresponding path program 4 times [2022-11-18 20:53:56,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:56,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914662896] [2022-11-18 20:53:56,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:56,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:56,947 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:53:56,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1582027392] [2022-11-18 20:53:56,948 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:53:56,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:53:56,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:53:56,951 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:53:56,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 20:53:59,438 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:53:59,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:53:59,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 7852 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:53:59,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:54:02,989 INFO L134 CoverageAnalysis]: Checked inductivity of 19265 backedges. 0 proven. 13506 refuted. 0 times theorem prover too weak. 5759 trivial. 0 not checked. [2022-11-18 20:54:02,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:54:06,835 INFO L134 CoverageAnalysis]: Checked inductivity of 19265 backedges. 0 proven. 13506 refuted. 0 times theorem prover too weak. 5759 trivial. 0 not checked. [2022-11-18 20:54:06,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:54:06,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914662896] [2022-11-18 20:54:06,836 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:54:06,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582027392] [2022-11-18 20:54:06,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582027392] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:54:06,836 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:54:06,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-18 20:54:06,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584862246] [2022-11-18 20:54:06,838 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:54:06,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 20:54:06,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:54:06,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 20:54:06,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:54:06,849 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 327 [2022-11-18 20:54:06,856 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 338 transitions, 928 flow. Second operand has 16 states, 16 states have (on average 298.375) internal successors, (4774), 16 states have internal predecessors, (4774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:06,856 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:54:06,856 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 327 [2022-11-18 20:54:06,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:54:11,084 INFO L130 PetriNetUnfolder]: 11/4861 cut-off events. [2022-11-18 20:54:11,084 INFO L131 PetriNetUnfolder]: For 647/648 co-relation queries the response was YES. [2022-11-18 20:54:11,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6667 conditions, 4861 events. 11/4861 cut-off events. For 647/648 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 324 event pairs, 0 based on Foata normal form. 4/4849 useless extension candidates. Maximal degree in co-relation 6644. Up to 148 conditions per place. [2022-11-18 20:54:11,097 INFO L137 encePairwiseOnDemand]: 321/327 looper letters, 42 selfloop transitions, 21 changer transitions 0/379 dead transitions. [2022-11-18 20:54:11,098 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 379 transitions, 1223 flow [2022-11-18 20:54:11,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 20:54:11,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 20:54:11,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 6261 transitions. [2022-11-18 20:54:11,102 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9117518567059851 [2022-11-18 20:54:11,102 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 6261 transitions. [2022-11-18 20:54:11,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 6261 transitions. [2022-11-18 20:54:11,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:54:11,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 6261 transitions. [2022-11-18 20:54:11,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 298.14285714285717) internal successors, (6261), 21 states have internal predecessors, (6261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:11,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 327.0) internal successors, (7194), 22 states have internal predecessors, (7194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:11,115 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 327.0) internal successors, (7194), 22 states have internal predecessors, (7194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:11,115 INFO L175 Difference]: Start difference. First operand has 360 places, 338 transitions, 928 flow. Second operand 21 states and 6261 transitions. [2022-11-18 20:54:11,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 379 transitions, 1223 flow [2022-11-18 20:54:11,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 379 transitions, 1209 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-18 20:54:11,129 INFO L231 Difference]: Finished difference. Result has 384 places, 351 transitions, 1052 flow [2022-11-18 20:54:11,129 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=922, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1052, PETRI_PLACES=384, PETRI_TRANSITIONS=351} [2022-11-18 20:54:11,130 INFO L288 CegarLoopForPetriNet]: 306 programPoint places, 78 predicate places. [2022-11-18 20:54:11,130 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 351 transitions, 1052 flow [2022-11-18 20:54:11,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 298.375) internal successors, (4774), 16 states have internal predecessors, (4774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:11,131 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:54:11,133 INFO L209 CegarLoopForPetriNet]: trace histogram [49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:54:11,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 20:54:11,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 20:54:11,347 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2022-11-18 20:54:11,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:54:11,348 INFO L85 PathProgramCache]: Analyzing trace with hash 786778558, now seen corresponding path program 5 times [2022-11-18 20:54:11,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:54:11,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101594304] [2022-11-18 20:54:11,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:54:11,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:54:12,246 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:54:12,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1816364116] [2022-11-18 20:54:12,247 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:54:12,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:54:12,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:54:12,249 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:54:12,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f55bdfa5-1510-4ce7-a2db-7c2cde13af9e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process