./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc --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 dad265ed8a17f32bb0a174302dfe188f9a15f60b81cc9c28a67851ab05270da2 --- 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-5e519f3 [2022-11-02 20:13:04,321 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:13:04,323 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:13:04,381 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:13:04,382 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:13:04,388 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:13:04,390 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:13:04,393 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:13:04,397 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:13:04,399 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:13:04,400 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:13:04,405 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:13:04,406 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:13:04,415 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:13:04,417 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:13:04,420 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:13:04,422 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:13:04,425 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:13:04,427 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:13:04,432 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:13:04,442 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:13:04,444 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:13:04,445 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:13:04,448 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:13:04,453 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:13:04,456 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:13:04,457 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:13:04,459 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:13:04,460 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:13:04,461 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:13:04,462 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:13:04,464 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:13:04,466 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:13:04,468 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:13:04,470 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:13:04,470 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:13:04,471 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:13:04,471 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:13:04,472 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:13:04,473 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:13:04,474 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:13:04,475 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-02 20:13:04,526 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:13:04,527 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:13:04,528 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:13:04,528 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:13:04,529 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:13:04,530 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:13:04,530 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:13:04,531 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:13:04,531 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:13:04,532 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:13:04,533 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:13:04,534 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:13:04,534 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:13:04,534 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:13:04,534 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:13:04,535 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:13:04,535 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:13:04,535 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:13:04,536 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-02 20:13:04,536 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:13:04,536 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:13:04,537 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:13:04,537 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:13:04,537 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:13:04,538 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:13:04,538 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:13:04,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:13:04,540 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:13:04,541 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:13:04,541 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:13:04,541 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:13:04,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:13:04,542 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:13:04,542 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:13:04,543 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:13:04,543 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_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dad265ed8a17f32bb0a174302dfe188f9a15f60b81cc9c28a67851ab05270da2 [2022-11-02 20:13:04,892 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:13:04,918 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:13:04,921 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:13:04,923 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:13:04,924 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:13:04,925 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i [2022-11-02 20:13:05,002 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/data/41dcaf90c/d3a4fb70081c4916b9f4ece0bb693eb3/FLAGffb619dde [2022-11-02 20:13:05,754 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:13:05,755 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i [2022-11-02 20:13:05,778 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/data/41dcaf90c/d3a4fb70081c4916b9f4ece0bb693eb3/FLAGffb619dde [2022-11-02 20:13:05,965 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/data/41dcaf90c/d3a4fb70081c4916b9f4ece0bb693eb3 [2022-11-02 20:13:05,968 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:13:05,970 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:13:05,971 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:13:05,972 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:13:05,976 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:13:05,977 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:13:05" (1/1) ... [2022-11-02 20:13:05,978 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e5cc4da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:05, skipping insertion in model container [2022-11-02 20:13:05,979 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:13:05" (1/1) ... [2022-11-02 20:13:05,988 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:13:06,038 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:13:06,743 WARN L230 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_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i[47038,47051] [2022-11-02 20:13:06,784 WARN L1543 CHandler]: Possible shadowing of function new [2022-11-02 20:13:06,788 WARN L1543 CHandler]: Possible shadowing of function new [2022-11-02 20:13:06,791 WARN L1543 CHandler]: Possible shadowing of function new [2022-11-02 20:13:06,793 WARN L1543 CHandler]: Possible shadowing of function new [2022-11-02 20:13:06,861 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:13:06,887 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:13:06,925 WARN L230 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_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i[47038,47051] [2022-11-02 20:13:06,930 WARN L1543 CHandler]: Possible shadowing of function new [2022-11-02 20:13:06,931 WARN L1543 CHandler]: Possible shadowing of function new [2022-11-02 20:13:06,932 WARN L1543 CHandler]: Possible shadowing of function new [2022-11-02 20:13:06,933 WARN L1543 CHandler]: Possible shadowing of function new [2022-11-02 20:13:06,955 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:13:07,026 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:13:07,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:07 WrapperNode [2022-11-02 20:13:07,027 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:13:07,028 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:13:07,028 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:13:07,029 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:13:07,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:07" (1/1) ... [2022-11-02 20:13:07,093 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:07" (1/1) ... [2022-11-02 20:13:07,191 INFO L138 Inliner]: procedures = 279, calls = 51, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 345 [2022-11-02 20:13:07,192 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:13:07,192 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:13:07,193 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:13:07,193 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:13:07,208 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:07" (1/1) ... [2022-11-02 20:13:07,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:07" (1/1) ... [2022-11-02 20:13:07,221 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:07" (1/1) ... [2022-11-02 20:13:07,227 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:07" (1/1) ... [2022-11-02 20:13:07,282 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:07" (1/1) ... [2022-11-02 20:13:07,292 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:07" (1/1) ... [2022-11-02 20:13:07,295 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:07" (1/1) ... [2022-11-02 20:13:07,304 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:07" (1/1) ... [2022-11-02 20:13:07,311 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:13:07,317 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:13:07,318 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:13:07,318 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:13:07,320 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:07" (1/1) ... [2022-11-02 20:13:07,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:13:07,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:13:07,355 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:13:07,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:13:07,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:13:07,411 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-02 20:13:07,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:13:07,411 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:13:07,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:13:07,412 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-02 20:13:07,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:13:07,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:13:07,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-02 20:13:07,413 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-02 20:13:07,413 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-02 20:13:07,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:13:07,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:13:07,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:13:07,416 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 20:13:07,733 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:13:07,736 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:13:08,719 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:13:08,732 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:13:08,733 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-11-02 20:13:08,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:13:08 BoogieIcfgContainer [2022-11-02 20:13:08,737 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:13:08,739 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:13:08,739 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:13:08,744 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:13:08,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:13:05" (1/3) ... [2022-11-02 20:13:08,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@550d604d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:13:08, skipping insertion in model container [2022-11-02 20:13:08,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:07" (2/3) ... [2022-11-02 20:13:08,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@550d604d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:13:08, skipping insertion in model container [2022-11-02 20:13:08,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:13:08" (3/3) ... [2022-11-02 20:13:08,756 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_93-evilcollapse_racefree.i [2022-11-02 20:13:08,766 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:13:08,782 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:13:08,783 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2022-11-02 20:13:08,783 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:13:08,948 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-02 20:13:09,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 373 places, 397 transitions, 802 flow [2022-11-02 20:13:09,257 INFO L130 PetriNetUnfolder]: 29/420 cut-off events. [2022-11-02 20:13:09,257 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2022-11-02 20:13:09,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 426 conditions, 420 events. 29/420 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1060 event pairs, 0 based on Foata normal form. 0/367 useless extension candidates. Maximal degree in co-relation 251. Up to 4 conditions per place. [2022-11-02 20:13:09,267 INFO L82 GeneralOperation]: Start removeDead. Operand has 373 places, 397 transitions, 802 flow [2022-11-02 20:13:09,283 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 373 places, 397 transitions, 802 flow [2022-11-02 20:13:09,312 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:13:09,321 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;@7bd48a40, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:13:09,322 INFO L358 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2022-11-02 20:13:09,340 INFO L130 PetriNetUnfolder]: 1/65 cut-off events. [2022-11-02 20:13:09,340 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:13:09,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:13:09,343 INFO L208 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] [2022-11-02 20:13:09,343 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-11-02 20:13:09,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:09,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1272485969, now seen corresponding path program 1 times [2022-11-02 20:13:09,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:13:09,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305950629] [2022-11-02 20:13:09,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:09,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:13:09,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:10,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:13:10,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:13:10,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305950629] [2022-11-02 20:13:10,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305950629] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:13:10,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:13:10,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:13:10,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274320930] [2022-11-02 20:13:10,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:13:10,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:13:10,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:13:10,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:13:10,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:13:10,606 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 397 [2022-11-02 20:13:10,616 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 397 transitions, 802 flow. Second operand has 6 states, 6 states have (on average 243.5) internal successors, (1461), 6 states have internal predecessors, (1461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:10,616 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:13:10,617 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 397 [2022-11-02 20:13:10,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:13:11,437 INFO L130 PetriNetUnfolder]: 278/1284 cut-off events. [2022-11-02 20:13:11,438 INFO L131 PetriNetUnfolder]: For 14/27 co-relation queries the response was YES. [2022-11-02 20:13:11,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1941 conditions, 1284 events. 278/1284 cut-off events. For 14/27 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 7081 event pairs, 252 based on Foata normal form. 191/1328 useless extension candidates. Maximal degree in co-relation 1591. Up to 640 conditions per place. [2022-11-02 20:13:11,454 INFO L137 encePairwiseOnDemand]: 365/397 looper letters, 122 selfloop transitions, 10 changer transitions 2/374 dead transitions. [2022-11-02 20:13:11,455 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 374 transitions, 1020 flow [2022-11-02 20:13:11,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:13:11,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 20:13:11,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1606 transitions. [2022-11-02 20:13:11,486 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6742233417296389 [2022-11-02 20:13:11,487 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1606 transitions. [2022-11-02 20:13:11,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1606 transitions. [2022-11-02 20:13:11,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:13:11,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1606 transitions. [2022-11-02 20:13:11,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 267.6666666666667) internal successors, (1606), 6 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:11,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 397.0) internal successors, (2779), 7 states have internal predecessors, (2779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:11,525 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 397.0) internal successors, (2779), 7 states have internal predecessors, (2779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:11,528 INFO L175 Difference]: Start difference. First operand has 373 places, 397 transitions, 802 flow. Second operand 6 states and 1606 transitions. [2022-11-02 20:13:11,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 374 transitions, 1020 flow [2022-11-02 20:13:11,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 374 transitions, 1020 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:13:11,549 INFO L231 Difference]: Finished difference. Result has 375 places, 372 transitions, 772 flow [2022-11-02 20:13:11,554 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=756, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=772, PETRI_PLACES=375, PETRI_TRANSITIONS=372} [2022-11-02 20:13:11,559 INFO L287 CegarLoopForPetriNet]: 373 programPoint places, 2 predicate places. [2022-11-02 20:13:11,560 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 372 transitions, 772 flow [2022-11-02 20:13:11,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 243.5) internal successors, (1461), 6 states have internal predecessors, (1461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:11,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:13:11,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:13:11,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:13:11,563 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-11-02 20:13:11,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:11,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1926296087, now seen corresponding path program 1 times [2022-11-02 20:13:11,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:13:11,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101313580] [2022-11-02 20:13:11,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:11,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:13:11,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:12,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:13:12,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:13:12,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101313580] [2022-11-02 20:13:12,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101313580] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:13:12,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:13:12,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:13:12,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879814351] [2022-11-02 20:13:12,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:13:12,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:13:12,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:13:12,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:13:12,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:13:12,251 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 397 [2022-11-02 20:13:12,254 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 372 transitions, 772 flow. Second operand has 6 states, 6 states have (on average 244.5) internal successors, (1467), 6 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:12,254 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:13:12,254 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 397 [2022-11-02 20:13:12,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:13:12,851 INFO L130 PetriNetUnfolder]: 278/1280 cut-off events. [2022-11-02 20:13:12,851 INFO L131 PetriNetUnfolder]: For 16/29 co-relation queries the response was YES. [2022-11-02 20:13:12,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1946 conditions, 1280 events. 278/1280 cut-off events. For 16/29 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 7000 event pairs, 252 based on Foata normal form. 0/1137 useless extension candidates. Maximal degree in co-relation 1749. Up to 638 conditions per place. [2022-11-02 20:13:12,860 INFO L137 encePairwiseOnDemand]: 385/397 looper letters, 120 selfloop transitions, 10 changer transitions 0/370 dead transitions. [2022-11-02 20:13:12,860 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 370 transitions, 1028 flow [2022-11-02 20:13:12,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:13:12,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 20:13:12,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1584 transitions. [2022-11-02 20:13:12,866 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6649874055415617 [2022-11-02 20:13:12,867 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1584 transitions. [2022-11-02 20:13:12,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1584 transitions. [2022-11-02 20:13:12,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:13:12,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1584 transitions. [2022-11-02 20:13:12,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 264.0) internal successors, (1584), 6 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:12,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 397.0) internal successors, (2779), 7 states have internal predecessors, (2779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:12,929 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 397.0) internal successors, (2779), 7 states have internal predecessors, (2779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:12,929 INFO L175 Difference]: Start difference. First operand has 375 places, 372 transitions, 772 flow. Second operand 6 states and 1584 transitions. [2022-11-02 20:13:12,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 370 transitions, 1028 flow [2022-11-02 20:13:12,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 370 transitions, 1008 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-02 20:13:12,943 INFO L231 Difference]: Finished difference. Result has 371 places, 370 transitions, 768 flow [2022-11-02 20:13:12,944 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=768, PETRI_PLACES=371, PETRI_TRANSITIONS=370} [2022-11-02 20:13:12,945 INFO L287 CegarLoopForPetriNet]: 373 programPoint places, -2 predicate places. [2022-11-02 20:13:12,945 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 370 transitions, 768 flow [2022-11-02 20:13:12,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 244.5) internal successors, (1467), 6 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:12,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:13:12,947 INFO L208 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] [2022-11-02 20:13:12,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:13:12,949 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-11-02 20:13:12,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:12,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1827666506, now seen corresponding path program 1 times [2022-11-02 20:13:12,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:13:12,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878822143] [2022-11-02 20:13:12,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:12,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:13:12,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:13,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:13:13,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:13:13,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878822143] [2022-11-02 20:13:13,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878822143] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:13:13,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:13:13,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:13:13,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370688500] [2022-11-02 20:13:13,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:13:13,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:13:13,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:13:13,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:13:13,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:13:13,046 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 364 out of 397 [2022-11-02 20:13:13,049 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 370 transitions, 768 flow. Second operand has 3 states, 3 states have (on average 365.0) internal successors, (1095), 3 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:13,049 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:13:13,049 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 364 of 397 [2022-11-02 20:13:13,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:13:13,185 INFO L130 PetriNetUnfolder]: 8/515 cut-off events. [2022-11-02 20:13:13,187 INFO L131 PetriNetUnfolder]: For 6/7 co-relation queries the response was YES. [2022-11-02 20:13:13,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 562 conditions, 515 events. 8/515 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1430 event pairs, 0 based on Foata normal form. 0/479 useless extension candidates. Maximal degree in co-relation 400. Up to 13 conditions per place. [2022-11-02 20:13:13,191 INFO L137 encePairwiseOnDemand]: 394/397 looper letters, 17 selfloop transitions, 2 changer transitions 0/377 dead transitions. [2022-11-02 20:13:13,191 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 377 transitions, 820 flow [2022-11-02 20:13:13,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:13:13,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:13:13,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1112 transitions. [2022-11-02 20:13:13,195 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9336691855583543 [2022-11-02 20:13:13,195 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1112 transitions. [2022-11-02 20:13:13,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1112 transitions. [2022-11-02 20:13:13,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:13:13,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1112 transitions. [2022-11-02 20:13:13,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 370.6666666666667) internal successors, (1112), 3 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:13,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 397.0) internal successors, (1588), 4 states have internal predecessors, (1588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:13,206 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 397.0) internal successors, (1588), 4 states have internal predecessors, (1588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:13,206 INFO L175 Difference]: Start difference. First operand has 371 places, 370 transitions, 768 flow. Second operand 3 states and 1112 transitions. [2022-11-02 20:13:13,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 377 transitions, 820 flow [2022-11-02 20:13:13,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 377 transitions, 800 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-02 20:13:13,219 INFO L231 Difference]: Finished difference. Result has 369 places, 371 transitions, 760 flow [2022-11-02 20:13:13,220 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=760, PETRI_PLACES=369, PETRI_TRANSITIONS=371} [2022-11-02 20:13:13,223 INFO L287 CegarLoopForPetriNet]: 373 programPoint places, -4 predicate places. [2022-11-02 20:13:13,224 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 371 transitions, 760 flow [2022-11-02 20:13:13,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 365.0) internal successors, (1095), 3 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:13,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:13:13,225 INFO L208 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] [2022-11-02 20:13:13,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:13:13,227 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-11-02 20:13:13,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:13,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1455516267, now seen corresponding path program 1 times [2022-11-02 20:13:13,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:13:13,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168649952] [2022-11-02 20:13:13,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:13,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:13:13,274 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:13:13,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [281010250] [2022-11-02 20:13:13,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:13,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:13:13,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:13:13,277 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:13:13,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:13:13,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:13,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-02 20:13:13,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:13:13,576 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:13:13,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:13:13,606 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:13:13,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:13:13,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:13:13,647 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:13:13,647 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:13:13,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:13:13,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:13:13,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:13:13,705 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:13:13,706 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:13:13,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:13:13,749 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:13:13,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:13:13,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168649952] [2022-11-02 20:13:13,750 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:13:13,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281010250] [2022-11-02 20:13:13,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281010250] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:13:13,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:13:13,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:13:13,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374203562] [2022-11-02 20:13:13,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:13:13,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:13:13,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:13:13,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:13:13,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:13:13,759 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 397 [2022-11-02 20:13:13,763 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 371 transitions, 760 flow. Second operand has 8 states, 8 states have (on average 247.625) internal successors, (1981), 8 states have internal predecessors, (1981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:13,763 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:13:13,763 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 397 [2022-11-02 20:13:13,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:13:15,176 INFO L130 PetriNetUnfolder]: 557/2568 cut-off events. [2022-11-02 20:13:15,177 INFO L131 PetriNetUnfolder]: For 29/55 co-relation queries the response was YES. [2022-11-02 20:13:15,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3890 conditions, 2568 events. 557/2568 cut-off events. For 29/55 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 14703 event pairs, 504 based on Foata normal form. 0/2284 useless extension candidates. Maximal degree in co-relation 1909. Up to 681 conditions per place. [2022-11-02 20:13:15,271 INFO L137 encePairwiseOnDemand]: 387/397 looper letters, 190 selfloop transitions, 9 changer transitions 0/443 dead transitions. [2022-11-02 20:13:15,272 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 443 transitions, 1308 flow [2022-11-02 20:13:15,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:13:15,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 20:13:15,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2405 transitions. [2022-11-02 20:13:15,281 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6731038343129023 [2022-11-02 20:13:15,282 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2405 transitions. [2022-11-02 20:13:15,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2405 transitions. [2022-11-02 20:13:15,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:13:15,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2405 transitions. [2022-11-02 20:13:15,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 267.22222222222223) internal successors, (2405), 9 states have internal predecessors, (2405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:15,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 397.0) internal successors, (3970), 10 states have internal predecessors, (3970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:15,306 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 397.0) internal successors, (3970), 10 states have internal predecessors, (3970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:15,306 INFO L175 Difference]: Start difference. First operand has 369 places, 371 transitions, 760 flow. Second operand 9 states and 2405 transitions. [2022-11-02 20:13:15,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 443 transitions, 1308 flow [2022-11-02 20:13:15,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 443 transitions, 1306 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:13:15,320 INFO L231 Difference]: Finished difference. Result has 376 places, 371 transitions, 782 flow [2022-11-02 20:13:15,321 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=756, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=782, PETRI_PLACES=376, PETRI_TRANSITIONS=371} [2022-11-02 20:13:15,323 INFO L287 CegarLoopForPetriNet]: 373 programPoint places, 3 predicate places. [2022-11-02 20:13:15,323 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 371 transitions, 782 flow [2022-11-02 20:13:15,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 247.625) internal successors, (1981), 8 states have internal predecessors, (1981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:15,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:13:15,325 INFO L208 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] [2022-11-02 20:13:15,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:13:15,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:13:15,553 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-11-02 20:13:15,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:15,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1169408, now seen corresponding path program 1 times [2022-11-02 20:13:15,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:13:15,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182227038] [2022-11-02 20:13:15,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:15,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:13:15,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:15,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:13:15,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:13:15,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182227038] [2022-11-02 20:13:15,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182227038] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:13:15,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:13:15,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:13:15,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971657155] [2022-11-02 20:13:15,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:13:15,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:13:15,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:13:15,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:13:15,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:13:15,681 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 367 out of 397 [2022-11-02 20:13:15,683 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 371 transitions, 782 flow. Second operand has 3 states, 3 states have (on average 368.0) internal successors, (1104), 3 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:15,684 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:13:15,684 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 367 of 397 [2022-11-02 20:13:15,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:13:15,876 INFO L130 PetriNetUnfolder]: 8/703 cut-off events. [2022-11-02 20:13:15,876 INFO L131 PetriNetUnfolder]: For 10/11 co-relation queries the response was YES. [2022-11-02 20:13:15,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 783 conditions, 703 events. 8/703 cut-off events. For 10/11 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1422 event pairs, 0 based on Foata normal form. 0/660 useless extension candidates. Maximal degree in co-relation 619. Up to 16 conditions per place. [2022-11-02 20:13:15,880 INFO L137 encePairwiseOnDemand]: 394/397 looper letters, 11 selfloop transitions, 2 changer transitions 0/375 dead transitions. [2022-11-02 20:13:15,880 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 375 transitions, 816 flow [2022-11-02 20:13:15,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:13:15,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:13:15,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1115 transitions. [2022-11-02 20:13:15,884 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9361880772460117 [2022-11-02 20:13:15,885 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1115 transitions. [2022-11-02 20:13:15,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1115 transitions. [2022-11-02 20:13:15,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:13:15,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1115 transitions. [2022-11-02 20:13:15,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 371.6666666666667) internal successors, (1115), 3 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:15,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 397.0) internal successors, (1588), 4 states have internal predecessors, (1588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:15,894 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 397.0) internal successors, (1588), 4 states have internal predecessors, (1588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:15,894 INFO L175 Difference]: Start difference. First operand has 376 places, 371 transitions, 782 flow. Second operand 3 states and 1115 transitions. [2022-11-02 20:13:15,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 375 transitions, 816 flow [2022-11-02 20:13:15,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 375 transitions, 802 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-02 20:13:15,906 INFO L231 Difference]: Finished difference. Result has 372 places, 372 transitions, 780 flow [2022-11-02 20:13:15,907 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=768, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=780, PETRI_PLACES=372, PETRI_TRANSITIONS=372} [2022-11-02 20:13:15,910 INFO L287 CegarLoopForPetriNet]: 373 programPoint places, -1 predicate places. [2022-11-02 20:13:15,911 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 372 transitions, 780 flow [2022-11-02 20:13:15,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 368.0) internal successors, (1104), 3 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:15,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:13:15,912 INFO L208 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] [2022-11-02 20:13:15,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:13:15,913 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-11-02 20:13:15,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:15,913 INFO L85 PathProgramCache]: Analyzing trace with hash -850448789, now seen corresponding path program 1 times [2022-11-02 20:13:15,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:13:15,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890152908] [2022-11-02 20:13:15,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:15,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:13:15,952 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:13:15,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1636353077] [2022-11-02 20:13:15,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:15,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:13:15,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:13:15,954 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:13:15,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:13:16,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:16,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:13:16,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:13:16,211 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:13:16,229 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:13:16,262 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:13:16,263 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:13:16,317 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:13:16,318 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:13:16,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:13:16,411 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:13:16,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:13:16,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890152908] [2022-11-02 20:13:16,412 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:13:16,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636353077] [2022-11-02 20:13:16,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636353077] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:13:16,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:13:16,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:13:16,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859262512] [2022-11-02 20:13:16,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:13:16,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:13:16,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:13:16,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:13:16,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:13:16,419 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 397 [2022-11-02 20:13:16,421 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 372 transitions, 780 flow. Second operand has 6 states, 6 states have (on average 254.5) internal successors, (1527), 6 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:16,422 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:13:16,422 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 397 [2022-11-02 20:13:16,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:13:17,177 INFO L130 PetriNetUnfolder]: 279/1588 cut-off events. [2022-11-02 20:13:17,177 INFO L131 PetriNetUnfolder]: For 20/33 co-relation queries the response was YES. [2022-11-02 20:13:17,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2425 conditions, 1588 events. 279/1588 cut-off events. For 20/33 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 7732 event pairs, 252 based on Foata normal form. 0/1437 useless extension candidates. Maximal degree in co-relation 1898. Up to 776 conditions per place. [2022-11-02 20:13:17,187 INFO L137 encePairwiseOnDemand]: 391/397 looper letters, 116 selfloop transitions, 5 changer transitions 0/371 dead transitions. [2022-11-02 20:13:17,188 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 371 transitions, 1020 flow [2022-11-02 20:13:17,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:13:17,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 20:13:17,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1616 transitions. [2022-11-02 20:13:17,193 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6784214945424013 [2022-11-02 20:13:17,194 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1616 transitions. [2022-11-02 20:13:17,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1616 transitions. [2022-11-02 20:13:17,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:13:17,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1616 transitions. [2022-11-02 20:13:17,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 269.3333333333333) internal successors, (1616), 6 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:17,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 397.0) internal successors, (2779), 7 states have internal predecessors, (2779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:17,209 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 397.0) internal successors, (2779), 7 states have internal predecessors, (2779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:17,210 INFO L175 Difference]: Start difference. First operand has 372 places, 372 transitions, 780 flow. Second operand 6 states and 1616 transitions. [2022-11-02 20:13:17,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 371 transitions, 1020 flow [2022-11-02 20:13:17,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 371 transitions, 1018 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:13:17,225 INFO L231 Difference]: Finished difference. Result has 375 places, 371 transitions, 786 flow [2022-11-02 20:13:17,227 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=776, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=786, PETRI_PLACES=375, PETRI_TRANSITIONS=371} [2022-11-02 20:13:17,230 INFO L287 CegarLoopForPetriNet]: 373 programPoint places, 2 predicate places. [2022-11-02 20:13:17,231 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 371 transitions, 786 flow [2022-11-02 20:13:17,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 254.5) internal successors, (1527), 6 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:17,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:13:17,232 INFO L208 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] [2022-11-02 20:13:17,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:13:17,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-02 20:13:17,457 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-11-02 20:13:17,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:17,458 INFO L85 PathProgramCache]: Analyzing trace with hash -104108845, now seen corresponding path program 1 times [2022-11-02 20:13:17,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:13:17,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141974772] [2022-11-02 20:13:17,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:17,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:13:17,500 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:13:17,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [216761234] [2022-11-02 20:13:17,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:17,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:13:17,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:13:17,503 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:13:17,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:13:17,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:17,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:13:17,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:13:17,803 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:13:17,820 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:13:17,860 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:13:17,861 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:13:17,917 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:13:17,917 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:13:17,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:13:17,949 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:13:17,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:13:17,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141974772] [2022-11-02 20:13:17,950 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:13:17,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216761234] [2022-11-02 20:13:17,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216761234] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:13:17,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:13:17,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:13:17,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465814424] [2022-11-02 20:13:17,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:13:17,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:13:17,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:13:17,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:13:17,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:13:17,955 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 397 [2022-11-02 20:13:17,957 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 371 transitions, 786 flow. Second operand has 6 states, 6 states have (on average 254.5) internal successors, (1527), 6 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:17,958 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:13:17,958 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 397 [2022-11-02 20:13:17,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:13:18,612 INFO L130 PetriNetUnfolder]: 279/1584 cut-off events. [2022-11-02 20:13:18,612 INFO L131 PetriNetUnfolder]: For 22/35 co-relation queries the response was YES. [2022-11-02 20:13:18,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2439 conditions, 1584 events. 279/1584 cut-off events. For 22/35 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 7735 event pairs, 252 based on Foata normal form. 0/1437 useless extension candidates. Maximal degree in co-relation 1947. Up to 776 conditions per place. [2022-11-02 20:13:18,622 INFO L137 encePairwiseOnDemand]: 391/397 looper letters, 116 selfloop transitions, 5 changer transitions 0/370 dead transitions. [2022-11-02 20:13:18,622 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 370 transitions, 1026 flow [2022-11-02 20:13:18,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:13:18,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 20:13:18,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1610 transitions. [2022-11-02 20:13:18,628 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6759026028547439 [2022-11-02 20:13:18,628 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1610 transitions. [2022-11-02 20:13:18,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1610 transitions. [2022-11-02 20:13:18,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:13:18,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1610 transitions. [2022-11-02 20:13:18,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 268.3333333333333) internal successors, (1610), 6 states have internal predecessors, (1610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:18,641 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 397.0) internal successors, (2779), 7 states have internal predecessors, (2779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:18,643 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 397.0) internal successors, (2779), 7 states have internal predecessors, (2779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:18,643 INFO L175 Difference]: Start difference. First operand has 375 places, 371 transitions, 786 flow. Second operand 6 states and 1610 transitions. [2022-11-02 20:13:18,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 370 transitions, 1026 flow [2022-11-02 20:13:18,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 370 transitions, 1016 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-02 20:13:18,655 INFO L231 Difference]: Finished difference. Result has 374 places, 370 transitions, 784 flow [2022-11-02 20:13:18,656 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=774, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=784, PETRI_PLACES=374, PETRI_TRANSITIONS=370} [2022-11-02 20:13:18,657 INFO L287 CegarLoopForPetriNet]: 373 programPoint places, 1 predicate places. [2022-11-02 20:13:18,657 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 370 transitions, 784 flow [2022-11-02 20:13:18,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 254.5) internal successors, (1527), 6 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:18,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:13:18,658 INFO L208 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] [2022-11-02 20:13:18,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:13:18,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:13:18,881 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-11-02 20:13:18,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:18,882 INFO L85 PathProgramCache]: Analyzing trace with hash -222028610, now seen corresponding path program 1 times [2022-11-02 20:13:18,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:13:18,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891002824] [2022-11-02 20:13:18,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:18,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:13:18,940 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:13:18,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [414184445] [2022-11-02 20:13:18,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:18,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:13:18,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:13:18,943 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:13:18,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:13:19,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:19,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:13:19,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:13:19,280 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:13:19,294 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:13:19,332 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:13:19,333 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:13:19,375 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:13:19,376 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:13:19,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:13:19,412 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:13:19,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:13:19,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891002824] [2022-11-02 20:13:19,413 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:13:19,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414184445] [2022-11-02 20:13:19,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414184445] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:13:19,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:13:19,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:13:19,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567891811] [2022-11-02 20:13:19,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:13:19,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:13:19,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:13:19,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:13:19,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:13:19,419 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 397 [2022-11-02 20:13:19,421 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 370 transitions, 784 flow. Second operand has 6 states, 6 states have (on average 253.5) internal successors, (1521), 6 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:19,422 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:13:19,422 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 397 [2022-11-02 20:13:19,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:13:20,256 INFO L130 PetriNetUnfolder]: 279/1580 cut-off events. [2022-11-02 20:13:20,256 INFO L131 PetriNetUnfolder]: For 22/35 co-relation queries the response was YES. [2022-11-02 20:13:20,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2439 conditions, 1580 events. 279/1580 cut-off events. For 22/35 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 7724 event pairs, 252 based on Foata normal form. 0/1437 useless extension candidates. Maximal degree in co-relation 1971. Up to 780 conditions per place. [2022-11-02 20:13:20,268 INFO L137 encePairwiseOnDemand]: 391/397 looper letters, 117 selfloop transitions, 5 changer transitions 0/369 dead transitions. [2022-11-02 20:13:20,268 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 369 transitions, 1026 flow [2022-11-02 20:13:20,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:13:20,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 20:13:20,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1599 transitions. [2022-11-02 20:13:20,276 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6712846347607053 [2022-11-02 20:13:20,276 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1599 transitions. [2022-11-02 20:13:20,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1599 transitions. [2022-11-02 20:13:20,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:13:20,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1599 transitions. [2022-11-02 20:13:20,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 266.5) internal successors, (1599), 6 states have internal predecessors, (1599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:20,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 397.0) internal successors, (2779), 7 states have internal predecessors, (2779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:20,303 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 397.0) internal successors, (2779), 7 states have internal predecessors, (2779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:20,303 INFO L175 Difference]: Start difference. First operand has 374 places, 370 transitions, 784 flow. Second operand 6 states and 1599 transitions. [2022-11-02 20:13:20,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 369 transitions, 1026 flow [2022-11-02 20:13:20,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 369 transitions, 1016 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-02 20:13:20,375 INFO L231 Difference]: Finished difference. Result has 373 places, 369 transitions, 782 flow [2022-11-02 20:13:20,376 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=772, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=782, PETRI_PLACES=373, PETRI_TRANSITIONS=369} [2022-11-02 20:13:20,377 INFO L287 CegarLoopForPetriNet]: 373 programPoint places, 0 predicate places. [2022-11-02 20:13:20,377 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 369 transitions, 782 flow [2022-11-02 20:13:20,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 253.5) internal successors, (1521), 6 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:20,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:13:20,378 INFO L208 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] [2022-11-02 20:13:20,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:13:20,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:13:20,587 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-11-02 20:13:20,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:20,588 INFO L85 PathProgramCache]: Analyzing trace with hash 45100215, now seen corresponding path program 1 times [2022-11-02 20:13:20,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:13:20,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336981036] [2022-11-02 20:13:20,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:20,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:13:20,632 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:13:20,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [814229951] [2022-11-02 20:13:20,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:20,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:13:20,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:13:20,634 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:13:20,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:13:20,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:20,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:13:20,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:13:20,956 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:13:20,967 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:13:20,990 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:13:20,991 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:13:21,024 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:13:21,024 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:13:21,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:13:21,056 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:13:21,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:13:21,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336981036] [2022-11-02 20:13:21,057 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:13:21,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814229951] [2022-11-02 20:13:21,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814229951] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:13:21,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:13:21,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:13:21,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399438153] [2022-11-02 20:13:21,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:13:21,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:13:21,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:13:21,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:13:21,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:13:21,062 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 397 [2022-11-02 20:13:21,064 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 369 transitions, 782 flow. Second operand has 6 states, 6 states have (on average 254.5) internal successors, (1527), 6 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:21,064 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:13:21,064 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 397 [2022-11-02 20:13:21,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:13:21,794 INFO L130 PetriNetUnfolder]: 279/1576 cut-off events. [2022-11-02 20:13:21,794 INFO L131 PetriNetUnfolder]: For 22/35 co-relation queries the response was YES. [2022-11-02 20:13:21,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2431 conditions, 1576 events. 279/1576 cut-off events. For 22/35 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 7670 event pairs, 252 based on Foata normal form. 0/1437 useless extension candidates. Maximal degree in co-relation 1983. Up to 776 conditions per place. [2022-11-02 20:13:21,806 INFO L137 encePairwiseOnDemand]: 391/397 looper letters, 116 selfloop transitions, 5 changer transitions 0/368 dead transitions. [2022-11-02 20:13:21,806 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 368 transitions, 1022 flow [2022-11-02 20:13:21,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:13:21,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 20:13:21,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1598 transitions. [2022-11-02 20:13:21,812 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.670864819479429 [2022-11-02 20:13:21,812 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1598 transitions. [2022-11-02 20:13:21,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1598 transitions. [2022-11-02 20:13:21,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:13:21,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1598 transitions. [2022-11-02 20:13:21,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 266.3333333333333) internal successors, (1598), 6 states have internal predecessors, (1598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:21,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 397.0) internal successors, (2779), 7 states have internal predecessors, (2779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:21,825 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 397.0) internal successors, (2779), 7 states have internal predecessors, (2779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:21,825 INFO L175 Difference]: Start difference. First operand has 373 places, 369 transitions, 782 flow. Second operand 6 states and 1598 transitions. [2022-11-02 20:13:21,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 368 transitions, 1022 flow [2022-11-02 20:13:21,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 368 transitions, 1012 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-02 20:13:21,836 INFO L231 Difference]: Finished difference. Result has 372 places, 368 transitions, 780 flow [2022-11-02 20:13:21,837 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=770, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=780, PETRI_PLACES=372, PETRI_TRANSITIONS=368} [2022-11-02 20:13:21,838 INFO L287 CegarLoopForPetriNet]: 373 programPoint places, -1 predicate places. [2022-11-02 20:13:21,838 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 368 transitions, 780 flow [2022-11-02 20:13:21,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 254.5) internal successors, (1527), 6 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:21,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:13:21,839 INFO L208 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] [2022-11-02 20:13:21,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:13:22,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-02 20:13:22,056 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-11-02 20:13:22,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:22,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1973032951, now seen corresponding path program 1 times [2022-11-02 20:13:22,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:13:22,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479024405] [2022-11-02 20:13:22,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:22,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:13:22,114 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:13:22,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1478016510] [2022-11-02 20:13:22,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:22,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:13:22,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:13:22,116 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:13:22,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 20:13:22,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:22,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:13:22,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:13:22,464 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:13:22,476 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:13:22,501 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:13:22,501 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:13:22,533 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:13:22,533 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:13:22,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:13:22,564 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:13:22,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:13:22,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479024405] [2022-11-02 20:13:22,565 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:13:22,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478016510] [2022-11-02 20:13:22,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478016510] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:13:22,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:13:22,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:13:22,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315975583] [2022-11-02 20:13:22,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:13:22,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:13:22,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:13:22,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:13:22,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:13:22,569 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 397 [2022-11-02 20:13:22,571 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 368 transitions, 780 flow. Second operand has 6 states, 6 states have (on average 256.3333333333333) internal successors, (1538), 6 states have internal predecessors, (1538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:22,572 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:13:22,572 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 397 [2022-11-02 20:13:22,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:13:23,266 INFO L130 PetriNetUnfolder]: 279/1572 cut-off events. [2022-11-02 20:13:23,267 INFO L131 PetriNetUnfolder]: For 22/35 co-relation queries the response was YES. [2022-11-02 20:13:23,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2419 conditions, 1572 events. 279/1572 cut-off events. For 22/35 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 7635 event pairs, 252 based on Foata normal form. 0/1437 useless extension candidates. Maximal degree in co-relation 1993. Up to 768 conditions per place. [2022-11-02 20:13:23,278 INFO L137 encePairwiseOnDemand]: 391/397 looper letters, 114 selfloop transitions, 5 changer transitions 0/367 dead transitions. [2022-11-02 20:13:23,278 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 367 transitions, 1016 flow [2022-11-02 20:13:23,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:13:23,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 20:13:23,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1602 transitions. [2022-11-02 20:13:23,284 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.672544080604534 [2022-11-02 20:13:23,284 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1602 transitions. [2022-11-02 20:13:23,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1602 transitions. [2022-11-02 20:13:23,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:13:23,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1602 transitions. [2022-11-02 20:13:23,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 267.0) internal successors, (1602), 6 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:23,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 397.0) internal successors, (2779), 7 states have internal predecessors, (2779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:23,296 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 397.0) internal successors, (2779), 7 states have internal predecessors, (2779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:23,296 INFO L175 Difference]: Start difference. First operand has 372 places, 368 transitions, 780 flow. Second operand 6 states and 1602 transitions. [2022-11-02 20:13:23,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 367 transitions, 1016 flow [2022-11-02 20:13:23,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 367 transitions, 1006 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-02 20:13:23,306 INFO L231 Difference]: Finished difference. Result has 371 places, 367 transitions, 778 flow [2022-11-02 20:13:23,307 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=768, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=778, PETRI_PLACES=371, PETRI_TRANSITIONS=367} [2022-11-02 20:13:23,308 INFO L287 CegarLoopForPetriNet]: 373 programPoint places, -2 predicate places. [2022-11-02 20:13:23,308 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 367 transitions, 778 flow [2022-11-02 20:13:23,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 256.3333333333333) internal successors, (1538), 6 states have internal predecessors, (1538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:23,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:13:23,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:13:23,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:13:23,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:13:23,525 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-11-02 20:13:23,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:23,526 INFO L85 PathProgramCache]: Analyzing trace with hash 2023797898, now seen corresponding path program 1 times [2022-11-02 20:13:23,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:13:23,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713927070] [2022-11-02 20:13:23,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:23,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:13:23,570 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:13:23,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [584674022] [2022-11-02 20:13:23,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:23,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:13:23,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:13:23,572 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:13:23,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 20:13:23,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:23,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:13:23,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:13:24,154 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:13:24,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:13:24,384 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:13:24,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:13:24,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713927070] [2022-11-02 20:13:24,385 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:13:24,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584674022] [2022-11-02 20:13:24,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584674022] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:13:24,385 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:13:24,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-02 20:13:24,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095773244] [2022-11-02 20:13:24,386 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:13:24,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:13:24,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:13:24,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:13:24,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:13:24,393 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 366 out of 397 [2022-11-02 20:13:24,396 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 367 transitions, 778 flow. Second operand has 8 states, 8 states have (on average 367.875) internal successors, (2943), 8 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:24,396 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:13:24,396 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 366 of 397 [2022-11-02 20:13:24,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:13:24,681 INFO L130 PetriNetUnfolder]: 8/869 cut-off events. [2022-11-02 20:13:24,682 INFO L131 PetriNetUnfolder]: For 8/9 co-relation queries the response was YES. [2022-11-02 20:13:24,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 987 conditions, 869 events. 8/869 cut-off events. For 8/9 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 823 event pairs, 0 based on Foata normal form. 4/852 useless extension candidates. Maximal degree in co-relation 822. Up to 13 conditions per place. [2022-11-02 20:13:24,686 INFO L137 encePairwiseOnDemand]: 391/397 looper letters, 12 selfloop transitions, 9 changer transitions 0/377 dead transitions. [2022-11-02 20:13:24,686 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 377 transitions, 842 flow [2022-11-02 20:13:24,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:13:24,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 20:13:24,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3317 transitions. [2022-11-02 20:13:24,696 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9283515253288553 [2022-11-02 20:13:24,696 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3317 transitions. [2022-11-02 20:13:24,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3317 transitions. [2022-11-02 20:13:24,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:13:24,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3317 transitions. [2022-11-02 20:13:24,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 368.55555555555554) internal successors, (3317), 9 states have internal predecessors, (3317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:24,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 397.0) internal successors, (3970), 10 states have internal predecessors, (3970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:24,715 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 397.0) internal successors, (3970), 10 states have internal predecessors, (3970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:24,715 INFO L175 Difference]: Start difference. First operand has 371 places, 367 transitions, 778 flow. Second operand 9 states and 3317 transitions. [2022-11-02 20:13:24,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 377 transitions, 842 flow [2022-11-02 20:13:24,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 377 transitions, 832 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-02 20:13:24,725 INFO L231 Difference]: Finished difference. Result has 377 places, 373 transitions, 818 flow [2022-11-02 20:13:24,726 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=768, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=818, PETRI_PLACES=377, PETRI_TRANSITIONS=373} [2022-11-02 20:13:24,727 INFO L287 CegarLoopForPetriNet]: 373 programPoint places, 4 predicate places. [2022-11-02 20:13:24,727 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 373 transitions, 818 flow [2022-11-02 20:13:24,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 367.875) internal successors, (2943), 8 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:24,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:13:24,729 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:13:24,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:13:24,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:13:24,957 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-11-02 20:13:24,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:24,958 INFO L85 PathProgramCache]: Analyzing trace with hash -543788768, now seen corresponding path program 1 times [2022-11-02 20:13:24,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:13:24,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197883318] [2022-11-02 20:13:24,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:24,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:13:25,044 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:13:25,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1464658870] [2022-11-02 20:13:25,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:25,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:13:25,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:13:25,046 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:13:25,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-02 20:13:25,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:25,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 1319 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:13:25,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:13:26,241 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 1 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:13:26,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:13:26,933 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 1 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:13:26,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:13:26,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197883318] [2022-11-02 20:13:26,934 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:13:26,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464658870] [2022-11-02 20:13:26,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464658870] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:13:26,934 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:13:26,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-02 20:13:26,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287197243] [2022-11-02 20:13:26,935 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:13:26,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 20:13:26,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:13:26,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 20:13:26,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:13:26,944 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 366 out of 397 [2022-11-02 20:13:26,950 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 373 transitions, 818 flow. Second operand has 16 states, 16 states have (on average 368.1875) internal successors, (5891), 16 states have internal predecessors, (5891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:26,950 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:13:26,950 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 366 of 397 [2022-11-02 20:13:26,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:13:27,783 INFO L130 PetriNetUnfolder]: 8/1597 cut-off events. [2022-11-02 20:13:27,783 INFO L131 PetriNetUnfolder]: For 66/67 co-relation queries the response was YES. [2022-11-02 20:13:27,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1855 conditions, 1597 events. 8/1597 cut-off events. For 66/67 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 827 event pairs, 0 based on Foata normal form. 8/1584 useless extension candidates. Maximal degree in co-relation 1688. Up to 29 conditions per place. [2022-11-02 20:13:27,788 INFO L137 encePairwiseOnDemand]: 391/397 looper letters, 20 selfloop transitions, 21 changer transitions 0/397 dead transitions. [2022-11-02 20:13:27,788 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 397 transitions, 1008 flow [2022-11-02 20:13:27,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 20:13:27,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-02 20:13:27,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 7731 transitions. [2022-11-02 20:13:27,806 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9273119827275998 [2022-11-02 20:13:27,806 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 7731 transitions. [2022-11-02 20:13:27,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 7731 transitions. [2022-11-02 20:13:27,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:13:27,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 7731 transitions. [2022-11-02 20:13:27,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 368.14285714285717) internal successors, (7731), 21 states have internal predecessors, (7731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:27,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 397.0) internal successors, (8734), 22 states have internal predecessors, (8734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:27,847 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 397.0) internal successors, (8734), 22 states have internal predecessors, (8734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:27,847 INFO L175 Difference]: Start difference. First operand has 377 places, 373 transitions, 818 flow. Second operand 21 states and 7731 transitions. [2022-11-02 20:13:27,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 397 transitions, 1008 flow [2022-11-02 20:13:27,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 397 transitions, 994 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-02 20:13:27,858 INFO L231 Difference]: Finished difference. Result has 401 places, 386 transitions, 942 flow [2022-11-02 20:13:27,859 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=812, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=942, PETRI_PLACES=401, PETRI_TRANSITIONS=386} [2022-11-02 20:13:27,859 INFO L287 CegarLoopForPetriNet]: 373 programPoint places, 28 predicate places. [2022-11-02 20:13:27,860 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 386 transitions, 942 flow [2022-11-02 20:13:27,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 368.1875) internal successors, (5891), 16 states have internal predecessors, (5891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:27,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:13:27,863 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:13:27,895 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-02 20:13:28,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-02 20:13:28,073 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-11-02 20:13:28,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:28,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1833664330, now seen corresponding path program 2 times [2022-11-02 20:13:28,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:13:28,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725629640] [2022-11-02 20:13:28,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:28,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:13:28,251 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:13:28,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [622468901] [2022-11-02 20:13:28,252 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:13:28,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:13:28,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:13:28,253 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:13:28,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-02 20:13:28,837 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 20:13:28,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:13:28,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:13:28,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:13:28,941 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-02 20:13:28,954 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2022-11-02 20:13:28,985 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:13:28,986 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2022-11-02 20:13:29,024 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:13:29,025 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2022-11-02 20:13:29,061 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1919 trivial. 0 not checked. [2022-11-02 20:13:29,062 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:13:29,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:13:29,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725629640] [2022-11-02 20:13:29,062 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:13:29,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622468901] [2022-11-02 20:13:29,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622468901] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:13:29,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:13:29,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:13:29,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893399387] [2022-11-02 20:13:29,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:13:29,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:13:29,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:13:29,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:13:29,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:13:29,068 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 397 [2022-11-02 20:13:29,070 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 386 transitions, 942 flow. Second operand has 6 states, 6 states have (on average 248.83333333333334) internal successors, (1493), 6 states have internal predecessors, (1493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:29,070 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:13:29,070 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 397 [2022-11-02 20:13:29,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:13:31,379 INFO L130 PetriNetUnfolder]: 505/3251 cut-off events. [2022-11-02 20:13:31,379 INFO L131 PetriNetUnfolder]: For 116/142 co-relation queries the response was YES. [2022-11-02 20:13:31,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5155 conditions, 3251 events. 505/3251 cut-off events. For 116/142 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 13601 event pairs, 348 based on Foata normal form. 0/3014 useless extension candidates. Maximal degree in co-relation 3868. Up to 1252 conditions per place. [2022-11-02 20:13:31,399 INFO L137 encePairwiseOnDemand]: 391/397 looper letters, 160 selfloop transitions, 5 changer transitions 0/423 dead transitions. [2022-11-02 20:13:31,400 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 423 transitions, 1352 flow [2022-11-02 20:13:31,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:13:31,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 20:13:31,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1594 transitions. [2022-11-02 20:13:31,405 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6691855583543241 [2022-11-02 20:13:31,405 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1594 transitions. [2022-11-02 20:13:31,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1594 transitions. [2022-11-02 20:13:31,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:13:31,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1594 transitions. [2022-11-02 20:13:31,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 265.6666666666667) internal successors, (1594), 6 states have internal predecessors, (1594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:31,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 397.0) internal successors, (2779), 7 states have internal predecessors, (2779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:31,416 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 397.0) internal successors, (2779), 7 states have internal predecessors, (2779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:31,417 INFO L175 Difference]: Start difference. First operand has 401 places, 386 transitions, 942 flow. Second operand 6 states and 1594 transitions. [2022-11-02 20:13:31,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 423 transitions, 1352 flow [2022-11-02 20:13:31,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 423 transitions, 1328 flow, removed 6 selfloop flow, removed 6 redundant places. [2022-11-02 20:13:31,430 INFO L231 Difference]: Finished difference. Result has 400 places, 386 transitions, 932 flow [2022-11-02 20:13:31,431 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=916, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=932, PETRI_PLACES=400, PETRI_TRANSITIONS=386} [2022-11-02 20:13:31,432 INFO L287 CegarLoopForPetriNet]: 373 programPoint places, 27 predicate places. [2022-11-02 20:13:31,432 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 386 transitions, 932 flow [2022-11-02 20:13:31,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 248.83333333333334) internal successors, (1493), 6 states have internal predecessors, (1493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:31,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:13:31,434 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:13:31,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:13:31,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-02 20:13:31,655 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-11-02 20:13:31,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:31,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1029905824, now seen corresponding path program 2 times [2022-11-02 20:13:31,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:13:31,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984272903] [2022-11-02 20:13:31,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:31,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:13:32,007 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:13:32,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1370635938] [2022-11-02 20:13:32,008 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:13:32,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:13:32,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:13:32,010 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:13:32,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-02 20:13:32,746 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 20:13:32,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:13:32,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:13:32,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:13:32,836 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-02 20:13:32,848 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2022-11-02 20:13:32,871 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:13:32,872 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2022-11-02 20:13:32,910 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:13:32,913 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2022-11-02 20:13:32,947 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1919 trivial. 0 not checked. [2022-11-02 20:13:32,947 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:13:32,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:13:32,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984272903] [2022-11-02 20:13:32,948 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:13:32,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370635938] [2022-11-02 20:13:32,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370635938] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:13:32,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:13:32,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:13:32,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998746261] [2022-11-02 20:13:32,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:13:32,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:13:32,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:13:32,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:13:32,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:13:32,954 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 397 [2022-11-02 20:13:32,956 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 386 transitions, 932 flow. Second operand has 6 states, 6 states have (on average 248.83333333333334) internal successors, (1493), 6 states have internal predecessors, (1493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:32,956 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:13:32,956 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 397 [2022-11-02 20:13:32,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:13:35,647 INFO L130 PetriNetUnfolder]: 693/3941 cut-off events. [2022-11-02 20:13:35,647 INFO L131 PetriNetUnfolder]: For 156/182 co-relation queries the response was YES. [2022-11-02 20:13:35,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6246 conditions, 3941 events. 693/3941 cut-off events. For 156/182 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 18319 event pairs, 630 based on Foata normal form. 0/3618 useless extension candidates. Maximal degree in co-relation 4971. Up to 1642 conditions per place. [2022-11-02 20:13:35,668 INFO L137 encePairwiseOnDemand]: 391/397 looper letters, 160 selfloop transitions, 5 changer transitions 0/423 dead transitions. [2022-11-02 20:13:35,668 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 423 transitions, 1344 flow [2022-11-02 20:13:35,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:13:35,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 20:13:35,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1593 transitions. [2022-11-02 20:13:35,674 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6687657430730478 [2022-11-02 20:13:35,674 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1593 transitions. [2022-11-02 20:13:35,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1593 transitions. [2022-11-02 20:13:35,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:13:35,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1593 transitions. [2022-11-02 20:13:35,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 265.5) internal successors, (1593), 6 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:35,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 397.0) internal successors, (2779), 7 states have internal predecessors, (2779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:35,685 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 397.0) internal successors, (2779), 7 states have internal predecessors, (2779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:35,685 INFO L175 Difference]: Start difference. First operand has 400 places, 386 transitions, 932 flow. Second operand 6 states and 1593 transitions. [2022-11-02 20:13:35,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 423 transitions, 1344 flow [2022-11-02 20:13:35,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 423 transitions, 1336 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-02 20:13:35,721 INFO L231 Difference]: Finished difference. Result has 401 places, 386 transitions, 940 flow [2022-11-02 20:13:35,722 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=922, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=940, PETRI_PLACES=401, PETRI_TRANSITIONS=386} [2022-11-02 20:13:35,722 INFO L287 CegarLoopForPetriNet]: 373 programPoint places, 28 predicate places. [2022-11-02 20:13:35,723 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 386 transitions, 940 flow [2022-11-02 20:13:35,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 248.83333333333334) internal successors, (1493), 6 states have internal predecessors, (1493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:35,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:13:35,724 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:13:35,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:13:35,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-02 20:13:35,953 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-11-02 20:13:35,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:35,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1417901671, now seen corresponding path program 1 times [2022-11-02 20:13:35,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:13:35,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743133880] [2022-11-02 20:13:35,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:35,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:13:36,150 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:13:36,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [973977199] [2022-11-02 20:13:36,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:36,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:13:36,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:13:36,153 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:13:36,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-02 20:13:37,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:37,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 2859 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 20:13:37,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:13:37,557 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1919 trivial. 0 not checked. [2022-11-02 20:13:37,557 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:13:37,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:13:37,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743133880] [2022-11-02 20:13:37,558 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:13:37,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973977199] [2022-11-02 20:13:37,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973977199] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:13:37,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:13:37,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:13:37,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737469550] [2022-11-02 20:13:37,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:13:37,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:13:37,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:13:37,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:13:37,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:13:37,563 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 367 out of 397 [2022-11-02 20:13:37,565 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 386 transitions, 940 flow. Second operand has 3 states, 3 states have (on average 368.0) internal successors, (1104), 3 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:37,566 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:13:37,566 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 367 of 397 [2022-11-02 20:13:37,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:13:38,320 INFO L130 PetriNetUnfolder]: 11/1823 cut-off events. [2022-11-02 20:13:38,320 INFO L131 PetriNetUnfolder]: For 119/152 co-relation queries the response was YES. [2022-11-02 20:13:38,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2084 conditions, 1823 events. 11/1823 cut-off events. For 119/152 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2108 event pairs, 0 based on Foata normal form. 3/1784 useless extension candidates. Maximal degree in co-relation 1772. Up to 29 conditions per place. [2022-11-02 20:13:38,327 INFO L137 encePairwiseOnDemand]: 394/397 looper letters, 9 selfloop transitions, 2 changer transitions 0/388 dead transitions. [2022-11-02 20:13:38,327 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 388 transitions, 966 flow [2022-11-02 20:13:38,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:13:38,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:13:38,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1113 transitions. [2022-11-02 20:13:38,331 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9345088161209067 [2022-11-02 20:13:38,331 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1113 transitions. [2022-11-02 20:13:38,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1113 transitions. [2022-11-02 20:13:38,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:13:38,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1113 transitions. [2022-11-02 20:13:38,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 371.0) internal successors, (1113), 3 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:38,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 397.0) internal successors, (1588), 4 states have internal predecessors, (1588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:38,341 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 397.0) internal successors, (1588), 4 states have internal predecessors, (1588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:38,342 INFO L175 Difference]: Start difference. First operand has 401 places, 386 transitions, 940 flow. Second operand 3 states and 1113 transitions. [2022-11-02 20:13:38,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 388 transitions, 966 flow [2022-11-02 20:13:38,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 388 transitions, 956 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-11-02 20:13:38,354 INFO L231 Difference]: Finished difference. Result has 400 places, 386 transitions, 938 flow [2022-11-02 20:13:38,354 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=930, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=938, PETRI_PLACES=400, PETRI_TRANSITIONS=386} [2022-11-02 20:13:38,355 INFO L287 CegarLoopForPetriNet]: 373 programPoint places, 27 predicate places. [2022-11-02 20:13:38,355 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 386 transitions, 938 flow [2022-11-02 20:13:38,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 368.0) internal successors, (1104), 3 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:38,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:13:38,357 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:13:38,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-02 20:13:38,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-02 20:13:38,573 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-11-02 20:13:38,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:38,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1071478875, now seen corresponding path program 1 times [2022-11-02 20:13:38,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:13:38,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016247049] [2022-11-02 20:13:38,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:38,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:13:38,742 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:13:38,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1312451045] [2022-11-02 20:13:38,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:38,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:13:38,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:13:38,744 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:13:38,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-02 20:13:40,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:40,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 2883 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 20:13:40,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:13:41,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1924 backedges. 1 proven. 1918 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:13:41,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:13:43,302 INFO L134 CoverageAnalysis]: Checked inductivity of 1924 backedges. 1 proven. 1918 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:13:43,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:13:43,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016247049] [2022-11-02 20:13:43,303 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:13:43,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312451045] [2022-11-02 20:13:43,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312451045] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:13:43,304 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:13:43,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2022-11-02 20:13:43,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080875941] [2022-11-02 20:13:43,305 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:13:43,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-02 20:13:43,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:13:43,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-02 20:13:43,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2022-11-02 20:13:43,321 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 366 out of 397 [2022-11-02 20:13:43,334 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 386 transitions, 938 flow. Second operand has 32 states, 32 states have (on average 368.375) internal successors, (11788), 32 states have internal predecessors, (11788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:43,334 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:13:43,335 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 366 of 397 [2022-11-02 20:13:43,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:13:45,914 INFO L130 PetriNetUnfolder]: 11/3279 cut-off events. [2022-11-02 20:13:45,914 INFO L131 PetriNetUnfolder]: For 586/589 co-relation queries the response was YES. [2022-11-02 20:13:45,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3924 conditions, 3279 events. 11/3279 cut-off events. For 586/589 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2115 event pairs, 0 based on Foata normal form. 16/3255 useless extension candidates. Maximal degree in co-relation 3743. Up to 61 conditions per place. [2022-11-02 20:13:45,922 INFO L137 encePairwiseOnDemand]: 391/397 looper letters, 36 selfloop transitions, 45 changer transitions 0/437 dead transitions. [2022-11-02 20:13:45,922 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 437 transitions, 1400 flow [2022-11-02 20:13:45,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-02 20:13:45,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-02 20:13:45,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 16559 transitions. [2022-11-02 20:13:45,944 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9268961656870977 [2022-11-02 20:13:45,944 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 16559 transitions. [2022-11-02 20:13:45,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 16559 transitions. [2022-11-02 20:13:45,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:13:45,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 16559 transitions. [2022-11-02 20:13:45,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 367.97777777777776) internal successors, (16559), 45 states have internal predecessors, (16559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:46,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 397.0) internal successors, (18262), 46 states have internal predecessors, (18262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:46,008 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 397.0) internal successors, (18262), 46 states have internal predecessors, (18262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:46,008 INFO L175 Difference]: Start difference. First operand has 400 places, 386 transitions, 938 flow. Second operand 45 states and 16559 transitions. [2022-11-02 20:13:46,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 437 transitions, 1400 flow [2022-11-02 20:13:46,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 437 transitions, 1396 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:13:46,023 INFO L231 Difference]: Finished difference. Result has 451 places, 411 transitions, 1236 flow [2022-11-02 20:13:46,023 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=934, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=1236, PETRI_PLACES=451, PETRI_TRANSITIONS=411} [2022-11-02 20:13:46,024 INFO L287 CegarLoopForPetriNet]: 373 programPoint places, 78 predicate places. [2022-11-02 20:13:46,024 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 411 transitions, 1236 flow [2022-11-02 20:13:46,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 368.375) internal successors, (11788), 32 states have internal predecessors, (11788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:46,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:13:46,028 INFO L208 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 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] [2022-11-02 20:13:46,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-02 20:13:46,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:13:46,245 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-11-02 20:13:46,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:46,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1352018013, now seen corresponding path program 1 times [2022-11-02 20:13:46,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:13:46,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803862646] [2022-11-02 20:13:46,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:46,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:13:46,571 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:13:46,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [102228892] [2022-11-02 20:13:46,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:46,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:13:46,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:13:46,573 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:13:46,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-02 20:13:49,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:49,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 5836 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-02 20:13:49,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:13:52,050 INFO L134 CoverageAnalysis]: Checked inductivity of 9576 backedges. 1 proven. 9570 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:13:52,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:13:55,599 INFO L134 CoverageAnalysis]: Checked inductivity of 9576 backedges. 1 proven. 9570 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:13:55,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:13:55,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803862646] [2022-11-02 20:13:55,600 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:13:55,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102228892] [2022-11-02 20:13:55,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102228892] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:13:55,600 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:13:55,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 61 [2022-11-02 20:13:55,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439835618] [2022-11-02 20:13:55,602 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:13:55,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-11-02 20:13:55,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:13:55,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-11-02 20:13:55,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=2700, Unknown=0, NotChecked=0, Total=3660 [2022-11-02 20:13:55,633 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 366 out of 397 [2022-11-02 20:13:55,653 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 411 transitions, 1236 flow. Second operand has 61 states, 61 states have (on average 368.4754098360656) internal successors, (22477), 61 states have internal predecessors, (22477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:13:55,653 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:13:55,653 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 366 of 397 [2022-11-02 20:13:55,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:14:04,351 INFO L130 PetriNetUnfolder]: 11/6009 cut-off events. [2022-11-02 20:14:04,351 INFO L131 PetriNetUnfolder]: For 4166/4169 co-relation queries the response was YES. [2022-11-02 20:14:04,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7584 conditions, 6009 events. 11/6009 cut-off events. For 4166/4169 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2117 event pairs, 0 based on Foata normal form. 30/5999 useless extension candidates. Maximal degree in co-relation 7397. Up to 121 conditions per place. [2022-11-02 20:14:04,368 INFO L137 encePairwiseOnDemand]: 391/397 looper letters, 66 selfloop transitions, 90 changer transitions 0/512 dead transitions. [2022-11-02 20:14:04,369 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 512 transitions, 2352 flow [2022-11-02 20:14:04,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-11-02 20:14:04,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2022-11-02 20:14:04,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 33111 transitions. [2022-11-02 20:14:04,429 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9267002518891687 [2022-11-02 20:14:04,430 INFO L72 ComplementDD]: Start complementDD. Operand 90 states and 33111 transitions. [2022-11-02 20:14:04,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 33111 transitions. [2022-11-02 20:14:04,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:14:04,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 90 states and 33111 transitions. [2022-11-02 20:14:04,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 91 states, 90 states have (on average 367.9) internal successors, (33111), 90 states have internal predecessors, (33111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:04,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 91 states, 91 states have (on average 397.0) internal successors, (36127), 91 states have internal predecessors, (36127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:04,576 INFO L81 ComplementDD]: Finished complementDD. Result has 91 states, 91 states have (on average 397.0) internal successors, (36127), 91 states have internal predecessors, (36127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:04,576 INFO L175 Difference]: Start difference. First operand has 451 places, 411 transitions, 1236 flow. Second operand 90 states and 33111 transitions. [2022-11-02 20:14:04,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 512 transitions, 2352 flow [2022-11-02 20:14:04,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 522 places, 512 transitions, 2266 flow, removed 25 selfloop flow, removed 18 redundant places. [2022-11-02 20:14:04,608 INFO L231 Difference]: Finished difference. Result has 538 places, 457 transitions, 1834 flow [2022-11-02 20:14:04,609 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=1180, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=90, PETRI_FLOW=1834, PETRI_PLACES=538, PETRI_TRANSITIONS=457} [2022-11-02 20:14:04,610 INFO L287 CegarLoopForPetriNet]: 373 programPoint places, 165 predicate places. [2022-11-02 20:14:04,610 INFO L495 AbstractCegarLoop]: Abstraction has has 538 places, 457 transitions, 1834 flow [2022-11-02 20:14:04,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 368.4754098360656) internal successors, (22477), 61 states have internal predecessors, (22477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:04,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:14:04,615 INFO L208 CegarLoopForPetriNet]: trace histogram [30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 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] [2022-11-02 20:14:04,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-02 20:14:04,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-02 20:14:04,841 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-11-02 20:14:04,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:04,842 INFO L85 PathProgramCache]: Analyzing trace with hash 719278417, now seen corresponding path program 2 times [2022-11-02 20:14:04,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:04,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72875539] [2022-11-02 20:14:04,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:04,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:05,518 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:14:05,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1611042798] [2022-11-02 20:14:05,519 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:14:05,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:14:05,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:14:05,521 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:14:05,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-02 20:14:09,558 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:14:09,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:14:09,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 11370 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:14:09,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:14:14,955 INFO L134 CoverageAnalysis]: Checked inductivity of 39621 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 39620 trivial. 0 not checked. [2022-11-02 20:14:14,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:14:22,714 INFO L134 CoverageAnalysis]: Checked inductivity of 39621 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 39620 trivial. 0 not checked. [2022-11-02 20:14:22,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:22,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72875539] [2022-11-02 20:14:22,715 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:14:22,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611042798] [2022-11-02 20:14:22,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611042798] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:14:22,716 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:14:22,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-02 20:14:22,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397025492] [2022-11-02 20:14:22,718 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:14:22,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:14:22,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:22,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:14:22,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:14:22,726 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 363 out of 397 [2022-11-02 20:14:22,741 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 457 transitions, 1834 flow. Second operand has 8 states, 8 states have (on average 365.75) internal successors, (2926), 8 states have internal predecessors, (2926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:22,741 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:14:22,741 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 363 of 397 [2022-11-02 20:14:22,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:14:42,878 INFO L130 PetriNetUnfolder]: 12/8770 cut-off events. [2022-11-02 20:14:42,878 INFO L131 PetriNetUnfolder]: For 2995/2998 co-relation queries the response was YES. [2022-11-02 20:14:42,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11152 conditions, 8770 events. 12/8770 cut-off events. For 2995/2998 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1422 event pairs, 0 based on Foata normal form. 2/8732 useless extension candidates. Maximal degree in co-relation 10949. Up to 181 conditions per place. [2022-11-02 20:14:42,909 INFO L137 encePairwiseOnDemand]: 391/397 looper letters, 21 selfloop transitions, 9 changer transitions 0/473 dead transitions. [2022-11-02 20:14:42,910 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 546 places, 473 transitions, 1928 flow [2022-11-02 20:14:42,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:14:42,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 20:14:42,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3299 transitions. [2022-11-02 20:14:42,915 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9233137419535404 [2022-11-02 20:14:42,916 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3299 transitions. [2022-11-02 20:14:42,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3299 transitions. [2022-11-02 20:14:42,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:14:42,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3299 transitions. [2022-11-02 20:14:42,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 366.55555555555554) internal successors, (3299), 9 states have internal predecessors, (3299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:42,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 397.0) internal successors, (3970), 10 states have internal predecessors, (3970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:42,928 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 397.0) internal successors, (3970), 10 states have internal predecessors, (3970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:42,929 INFO L175 Difference]: Start difference. First operand has 538 places, 457 transitions, 1834 flow. Second operand 9 states and 3299 transitions. [2022-11-02 20:14:42,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 546 places, 473 transitions, 1928 flow [2022-11-02 20:14:42,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 504 places, 473 transitions, 1810 flow, removed 17 selfloop flow, removed 42 redundant places. [2022-11-02 20:14:42,976 INFO L231 Difference]: Finished difference. Result has 507 places, 463 transitions, 1766 flow [2022-11-02 20:14:42,976 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=1716, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1766, PETRI_PLACES=507, PETRI_TRANSITIONS=463} [2022-11-02 20:14:42,977 INFO L287 CegarLoopForPetriNet]: 373 programPoint places, 134 predicate places. [2022-11-02 20:14:42,977 INFO L495 AbstractCegarLoop]: Abstraction has has 507 places, 463 transitions, 1766 flow [2022-11-02 20:14:42,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 365.75) internal successors, (2926), 8 states have internal predecessors, (2926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:42,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:14:42,981 INFO L208 CegarLoopForPetriNet]: trace histogram [90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-02 20:14:43,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-02 20:14:43,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-02 20:14:43,195 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-11-02 20:14:43,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:43,197 INFO L85 PathProgramCache]: Analyzing trace with hash -184532501, now seen corresponding path program 2 times [2022-11-02 20:14:43,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:43,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185615974] [2022-11-02 20:14:43,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:43,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:45,052 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:14:45,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1152993285] [2022-11-02 20:14:45,054 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:14:45,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:14:45,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:14:45,055 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:14:45,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-02 20:14:55,920 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:14:55,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:14:56,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 33711 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:14:56,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:15:14,047 INFO L134 CoverageAnalysis]: Checked inductivity of 364817 backedges. 0 proven. 245967 refuted. 0 times theorem prover too weak. 118850 trivial. 0 not checked. [2022-11-02 20:15:14,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:15:34,370 INFO L134 CoverageAnalysis]: Checked inductivity of 364817 backedges. 0 proven. 245967 refuted. 0 times theorem prover too weak. 118850 trivial. 0 not checked. [2022-11-02 20:15:34,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:15:34,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185615974] [2022-11-02 20:15:34,371 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:15:34,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152993285] [2022-11-02 20:15:34,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152993285] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:15:34,371 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:15:34,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-02 20:15:34,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774048608] [2022-11-02 20:15:34,376 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:15:34,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 20:15:34,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:15:34,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 20:15:34,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:15:34,391 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 363 out of 397 [2022-11-02 20:15:34,395 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 463 transitions, 1766 flow. Second operand has 16 states, 16 states have (on average 366.375) internal successors, (5862), 16 states have internal predecessors, (5862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:34,396 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:15:34,396 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 363 of 397 [2022-11-02 20:15:34,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:16:34,620 INFO L130 PetriNetUnfolder]: 16/19806 cut-off events. [2022-11-02 20:16:34,620 INFO L131 PetriNetUnfolder]: For 7440/7443 co-relation queries the response was YES. [2022-11-02 20:16:34,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24902 conditions, 19806 events. 16/19806 cut-off events. For 7440/7443 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1423 event pairs, 0 based on Foata normal form. 4/19770 useless extension candidates. Maximal degree in co-relation 24696. Up to 421 conditions per place. [2022-11-02 20:16:34,724 INFO L137 encePairwiseOnDemand]: 391/397 looper letters, 41 selfloop transitions, 21 changer transitions 0/505 dead transitions. [2022-11-02 20:16:34,725 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 527 places, 505 transitions, 2034 flow [2022-11-02 20:16:34,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 20:16:34,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-02 20:16:34,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 7689 transitions. [2022-11-02 20:16:34,735 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9222741993522849 [2022-11-02 20:16:34,735 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 7689 transitions. [2022-11-02 20:16:34,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 7689 transitions. [2022-11-02 20:16:34,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:16:34,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 7689 transitions. [2022-11-02 20:16:34,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 366.14285714285717) internal successors, (7689), 21 states have internal predecessors, (7689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:34,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 397.0) internal successors, (8734), 22 states have internal predecessors, (8734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:34,764 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 397.0) internal successors, (8734), 22 states have internal predecessors, (8734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:34,764 INFO L175 Difference]: Start difference. First operand has 507 places, 463 transitions, 1766 flow. Second operand 21 states and 7689 transitions. [2022-11-02 20:16:34,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 527 places, 505 transitions, 2034 flow [2022-11-02 20:16:34,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 526 places, 505 transitions, 2020 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-02 20:16:34,825 INFO L231 Difference]: Finished difference. Result has 531 places, 476 transitions, 1890 flow [2022-11-02 20:16:34,825 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=1760, PETRI_DIFFERENCE_MINUEND_PLACES=506, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1890, PETRI_PLACES=531, PETRI_TRANSITIONS=476} [2022-11-02 20:16:34,826 INFO L287 CegarLoopForPetriNet]: 373 programPoint places, 158 predicate places. [2022-11-02 20:16:34,826 INFO L495 AbstractCegarLoop]: Abstraction has has 531 places, 476 transitions, 1890 flow [2022-11-02 20:16:34,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 366.375) internal successors, (5862), 16 states have internal predecessors, (5862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:34,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:16:34,834 INFO L208 CegarLoopForPetriNet]: trace histogram [210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:16:34,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-02 20:16:35,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:16:35,061 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-11-02 20:16:35,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:35,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1876423193, now seen corresponding path program 3 times [2022-11-02 20:16:35,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:16:35,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565806236] [2022-11-02 20:16:35,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:35,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:16:39,617 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:16:39,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [467731348] [2022-11-02 20:16:39,620 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:16:39,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:16:39,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:16:39,621 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:16:39,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caffe89f-a964-4cf5-9950-4bb0f4f1ede9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process